{"title":"Water Pumps \u0026 Impeller Kits","description":null,"products":[{"product_id":"sierra-18-3017-marine-water-pump-impeller-replaces-mercury-force-47-89984t4-85-90-hp-outboard","title":"Sierra 18-3017 Impeller - Replaces Mercury Marine 47-89984, 47-30221 - MerCruiser MR\/Alpha One Stern Drives","description":"\u003cp\u003eThe Sierra 18-3017 is a replacement water pump impeller engineered for MerCruiser MR and Alpha One stern drives. As the wear component inside the drive's water pump, the impeller circulates raw water through the cooling system, and its flexible vanes are the first part to degrade from age, dry-running, or debris intake, which makes periodic replacement essential to prevent overheating. This impeller cross-references directly to Mercury Marine, MerCruiser stern drive, and Chrysler\/Force OEM part numbers, giving boat owners and marine technicians a straightforward way to source a correct replacement without going through the original engine manufacturer. It is built with a machined exterior for a consistent fit inside the pump housing and is sized for the pump body used on MR and Alpha One drives within specific serial number ranges. The 18-3017 is also the impeller specified for use inside a number of Sierra water pump kits and a complete lower gearcase rebuild kit, so it can be purchased on its own for a straight impeller swap or as part of a broader water pump service. At 0.2 pounds and approximately 1.5 x 6 x 6 inches as packaged, it is a compact, low-cost part that keeps a stern drive's raw water cooling system running as designed. Because fitment is tied to drive serial number, confirming the correct range before ordering helps ensure the right impeller is installed the first time.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3017\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 1.5 x 6 x 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999315045\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Sierra Kits:\u003c\/strong\u003e 18-3217, 18-3217D, 18-3251, 18-3251D, 18-3314, 18-3316, 18-3317, 18-3319, 18-3320, 18-3321, 18-3517, 18-8370\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference Numbers:\u003c\/strong\u003e 47-65960, 47-803631T, 47-89984, 47-89984T4, 694065, 47-F694065, 47-30221, 89840, 9-45306, 47-899844, 47-899842, 47-85460, 47-89984T3\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser MR and Alpha One stern drives, serial numbers 2495186 to 2763441\u003c\/li\u003e\n\u003cli\u003eMerCruiser MR and Alpha One stern drives without a flush screw in the gear housing, serial numbers 2763442 to 6854392\u003c\/li\u003e\n\u003cli\u003eMerCruiser MR\/Alpha One stern drives, serial numbers 6854393 to 0D594568\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUnits in the 2763442 to 6854392 serial range that have been retro-fitted with an Alpha-style lower unit (no pre-load pin in the top of the driveshaft) require Alpha-style parts instead, and should use part numbers 18-3320 and 18-3420 rather than the standard parts listed for that range.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e47-65960\u003c\/li\u003e\n\u003cli\u003e47-803631T\u003c\/li\u003e\n\u003cli\u003e47-89984\u003c\/li\u003e\n\u003cli\u003e47-89984T4\u003c\/li\u003e\n\u003cli\u003e694065\u003c\/li\u003e\n\u003cli\u003e47-F694065\u003c\/li\u003e\n\u003cli\u003e47-30221\u003c\/li\u003e\n\u003cli\u003e89840\u003c\/li\u003e\n\u003cli\u003e9-45306\u003c\/li\u003e\n\u003cli\u003e47-899844\u003c\/li\u003e\n\u003cli\u003e47-899842\u003c\/li\u003e\n\u003cli\u003e47-85460\u003c\/li\u003e\n\u003cli\u003e47-89984T3\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3017 impeller fit?\u003c\/strong\u003e The Sierra 18-3017 fits MerCruiser MR and Alpha One stern drives, and the correct application depends on the drive's serial number: 2495186 to 2763441, 2763442 to 6854392 (units without a flush screw in the gear housing), or 6854393 to 0D594568.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3017 a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e Part number 18-3017 is a Sierra-brand impeller sold under that number, made to cross-reference directly with the original Mercury Marine and MerCruiser impellers it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does 18-3017 replace?\u003c\/strong\u003e The 18-3017 cross-references to Mercury Marine and MerCruiser numbers 47-65960, 47-89984, 47-89984T4, 47-89984T3, 47-899842, 47-899844, 47-85460, 47-30221, and 694065, as well as Chrysler\/Force numbers 47-803631T and 47-F694065.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this impeller weigh?\u003c\/strong\u003e The Sierra 18-3017 impeller weighs 0.2 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-3017?\u003c\/strong\u003e As packaged, the Sierra 18-3017 measures approximately 1.5 x 6 x 6 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use 18-3017 if my drive has been retrofitted with an Alpha-style lower unit?\u003c\/strong\u003e No, not for units in the 2763442 to 6854392 serial range: if that drive has been retro-fitted with an Alpha-style lower unit (no pre-load pin in the top of the driveshaft), it needs Alpha-style parts 18-3320 and 18-3420 instead of the standard impeller listed for that range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the 18-3017 impeller have?\u003c\/strong\u003e The Sierra 18-3017 has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-3017 used in any complete water pump kits?\u003c\/strong\u003e Yes, the 18-3017 impeller is specified for use inside several Sierra water pump kits, including 18-3217, 18-3251, 18-3314, 18-3316, 18-3317, 18-3319, 18-3320, 18-3321, 18-3517, and the 18-8370 complete lower gearcase rebuild kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if 18-3017 is the right impeller for my MerCruiser instead of a different Sierra number?\u003c\/strong\u003e Fitment for 18-3017 is tied to your MerCruiser MR or Alpha One drive's serial number falling within 2495186 to 6854392 (or up to 0D594568 for MR\/Alpha One units); drives outside these ranges, such as Alpha One Generation II, Vazer, or Bravo units, use a different impeller part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3017 include the water pump housing or gasket?\u003c\/strong\u003e The 18-3017 is the impeller itself; it is designed to install into the existing MerCruiser MR\/Alpha One water pump housing rather than including a housing or full gasket set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-3017 fit a Chrysler or Force outboard?\u003c\/strong\u003e The 18-3017 cross-references to Chrysler\/Force part numbers 47-803631T and 47-F694065, indicating compatibility with certain Chrysler\/Force applications that use those OEM impellers.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48987964276955,"sku":"SIE-18-3017","price":19.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__02071.1753840677.500.750.jpg?v=1785189005"},{"product_id":"sierra-18-0327-water-pump-gasket-replaces-omc-volvo-penta-3853342-mallory-27-33956-mercruiser-volvo-penta-omc","title":"Sierra 18-0327 Water Pump Gasket, Interchanges with OMC\/Volvo Penta 3853342, GLM 31350, Mallory 27-33956","description":"\u003cp\u003eThe Sierra 18-0327 is a round water pump gasket used to create a leak-free seal between a marine engine's water pump and its mounting surface. It is manufactured to meet or exceeds the quality of the original equipment part it replaces, making it a reliable choice whenever a water pump is serviced, rebuilt, or replaced and a fresh gasket is needed to restore a proper seal. Each unit ships as a single gasket (1 count) and is backed by a 90-day warranty.\u003c\/p\u003e\u003cp\u003eThe 18-0327 is a direct interchange for several OEM and aftermarket gasket numbers, so it can be ordered using any of the equivalent part numbers a technician or parts counter may reference: GLM 31350, Mallory 27-33956, FI5000200, FI5000219, OMC 3853342, and Volvo Penta 3853342. Confirm the gasket number required by your specific water pump before ordering to ensure correct fit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-0327\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999873163\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00030999873163\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 90 days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 31350, Mallory 27-33956, FI5000200, FI5000219, OMC 3853342, Volvo Penta 3853342\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 31350\u003c\/li\u003e\n\u003cli\u003eMallory 27-33956\u003c\/li\u003e\n\u003cli\u003eFI5000200\u003c\/li\u003e\n\u003cli\u003eFI5000219\u003c\/li\u003e\n\u003cli\u003eOMC 3853342\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 3853342\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-0327 gasket used for?\u003c\/strong\u003e It seals the mating surface between a marine engine's water pump and its housing, and is used whenever the water pump is replaced or serviced to restore a leak-free seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0327 the same as OMC or Volvo Penta 3853342?\u003c\/strong\u003e Yes, the 18-0327 is a direct interchange for OMC 3853342 and Volvo Penta 3853342, along with GLM 31350, Mallory 27-33956, FI5000200, and FI5000219.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-0327 work in place of a Mallory 27-33956 gasket?\u003c\/strong\u003e Yes, Mallory 27-33956 is one of the listed cross-reference numbers for the Sierra 18-0327 gasket, so it is a suitable direct replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape is the 18-0327 water pump gasket?\u003c\/strong\u003e The Sierra 18-0327 is a round gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-0327 gasket weigh?\u003c\/strong\u003e It weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order part number 18-0327?\u003c\/strong\u003e You receive one Sierra 18-0327 water pump gasket (unit count of 1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0327 gasket genuine OEM or aftermarket?\u003c\/strong\u003e The 18-0327 is a Sierra aftermarket gasket manufactured to meet or exceed the quality of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat warranty comes with the Sierra 18-0327 gasket?\u003c\/strong\u003e The Sierra 18-0327 water pump gasket carries a 90-day warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-0327 gasket made from?\u003c\/strong\u003e The specific gasket material is not published for the 18-0327, but it is built to meet or exceed original equipment quality standards for its application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I find the correct gasket if I only have my old water pump's part number?\u003c\/strong\u003e Check your old gasket or pump documentation against the 18-0327's cross-reference numbers, GLM 31350, Mallory 27-33956, FI5000200, FI5000219, OMC 3853342, and Volvo Penta 3853342, to confirm it is the correct match before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the UPC 030999873163 belong to the Sierra 18-0327?\u003c\/strong\u003e Yes, UPC 030999873163 (GTIN 00030999873163) identifies the Sierra 18-0327 water pump gasket.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988064579803,"sku":"SIE-18-0327","price":2.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0327_lg__86974.1558120737.500.750.jpg?v=1785188282"},{"product_id":"sierra-18-0345-water-pump-gasket-replaces-chrysler-12-866451-chrysler-inboard-engines","title":"Sierra Water Pump Gasket 18-0345, GLM 37490 Cross Reference, Chrysler Inboard","description":"\u003cp\u003eThe Sierra Water Pump Gasket, part number 18-0345, is a round gasket designed for Chrysler inboard water pump applications. It seals the water pump housing to prevent coolant or raw water leakage at the mating surface, protecting the pump and surrounding engine components from moisture intrusion and pressure loss during operation.\u003c\/p\u003e\u003cp\u003eThis gasket is sold as a single unit and is intended to be replaced any time the water pump housing is removed or serviced, since reusing an old gasket can allow leaks to develop even if it looks intact. It carries the Sierra brand name and part number 18-0345, and cross-references to GLM number 37490, so buyers who know either numbering system can confirm they are ordering the correct gasket for their Chrysler inboard water pump.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-0345\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Chrysler Inboard Water Pumps and Impellers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282145798\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGLM Cross Reference Number:\u003c\/strong\u003e 37490\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eChrysler inboard water pumps\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eGLM 37490\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is Sierra part number 18-0345?\u003c\/strong\u003e It is a round water pump gasket made by Sierra for Chrysler inboard water pump applications, sold as a single gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes GLM number 37490 match this gasket?\u003c\/strong\u003e Yes, GLM number 37490 cross-references directly to Sierra 18-0345, so either number identifies the same water pump gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-0345 gasket weigh?\u003c\/strong\u003e The Sierra 18-0345 water pump gasket weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape is the Sierra 18-0345 gasket?\u003c\/strong\u003e It is round in shape, matching the mating surface of the Chrysler inboard water pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package of 18-0345?\u003c\/strong\u003e Each package of Sierra 18-0345 contains a single water pump gasket, listed as a unit count of 1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace the gasket every time I remove the water pump?\u003c\/strong\u003e Yes, the Sierra 18-0345 gasket should be replaced whenever the Chrysler inboard water pump housing is removed, since a reused gasket can leak even if it appears undamaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engine application is the 18-0345 gasket used for?\u003c\/strong\u003e Sierra 18-0345 is used on Chrysler inboard water pump and impeller assemblies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-0345 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-0345 is the Sierra manufacturer part number for this water pump gasket, not a generic aftermarket substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-0345 gasket?\u003c\/strong\u003e The UPC for the Sierra 18-0345 water pump gasket is 808282145798.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the GLM 37490 number to order this part?\u003c\/strong\u003e Yes, GLM 37490 is the cross-reference number for Sierra 18-0345, so referencing either number will get you the correct gasket.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988065530075,"sku":"SIE-18-0345","price":5.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0345_lg__76482.1558118436.500.750.jpg?v=1785188083"},{"product_id":"sierra-18-0386-water-pump-body-gasket-for-mercruiser-replaces-oem-27-94914","title":"Sierra 18-0386 Water Pump Body Gasket - Replaces 27-94914, 27-72780","description":"\u003cp\u003eThe Sierra 18-0386 Water Pump Body Gasket seals the mating surface between the water pump body and the housing on applicable Mercruiser sterndrive engines, preventing raw water leakage at this joint during operation. It is manufactured to meet or exceed the quality of the original equipment part it replaces, making it a reliable choice when servicing or rebuilding a water pump assembly. This is a single gasket, sold individually, designed for a precise fit against the original mounting pattern so it seats correctly without additional trimming or modification.\u003c\/p\u003e\u003cp\u003eThis gasket is commonly replaced any time the water pump body is removed for service, such as during an impeller replacement, water pump rebuild, or when addressing a coolant or raw water leak at the pump housing. Installing a new gasket rather than reusing the old one helps ensure a proper seal and reduces the risk of leaks after reassembly. The part is identified by Sierra part number 18-0386 and directly corresponds to the OEM Mercruiser numbers listed below, so it can be cross-referenced against those part numbers when ordering.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-0386\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Water Pump Body Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 gasket per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999873675\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Water Pumps and Impellers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits Mercruiser sterndrive water pump assemblies that use OEM gasket 27-94914 or 27-72780.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e27-94914\u003c\/li\u003e\n\u003cli\u003e27-72780\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-0386 Water Pump Body Gasket fit?\u003c\/strong\u003e The Sierra 18-0386 is designed for Mercruiser sterndrive water pump assemblies that use OEM gasket numbers 27-94914 or 27-72780, sealing the water pump body to its housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-0386 gasket the same as Mercruiser 27-94914?\u003c\/strong\u003e Yes, Sierra part 18-0386 directly replaces Mercruiser OEM gasket 27-94914, along with 27-72780, and is built to meet or exceed the original equipment specification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package of the 18-0386?\u003c\/strong\u003e The Sierra 18-0386 Water Pump Body Gasket is sold as a single gasket per package, intended for one water pump body installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-0386 gasket weigh?\u003c\/strong\u003e This gasket weighs 0.01 pounds, consistent with its use as a thin sealing component rather than a structural part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the water pump body gasket?\u003c\/strong\u003e Replace the 18-0386 gasket any time the water pump body is removed, such as during impeller service or a water pump rebuild, to ensure a proper seal against leaks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0386 an OEM part or aftermarket?\u003c\/strong\u003e The 18-0386 is a Sierra-manufactured aftermarket gasket engineered to meet or exceed the quality of the original Mercruiser equipment it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I reuse the old water pump gasket instead of installing a new one?\u003c\/strong\u003e Reusing an old gasket is not recommended; installing a new Sierra 18-0386 gasket during water pump service helps ensure a reliable seal and reduces the chance of leaks after reassembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-0386 gasket require any trimming to fit?\u003c\/strong\u003e No, the Sierra 18-0386 Water Pump Body Gasket is manufactured to match the original mounting pattern, so it seats correctly without trimming or modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers cross-reference to the Sierra 18-0386?\u003c\/strong\u003e The Sierra 18-0386 gasket cross-references to Mercruiser OEM numbers 27-94914 and 27-72780.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-0386?\u003c\/strong\u003e Ordering the Sierra 18-0386 includes one water pump body gasket, sold individually rather than as part of a kit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988072804571,"sku":"SIE-18-0386","price":2.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0386_lg__66528.1558120113.500.750.jpg?v=1785188700"},{"product_id":"sierra-18-0415-9-water-pump-gasket-pkg-of-2-replaces-chrysler-27-19701-fits-chrysler-inboard-water-pumps","title":"Sierra Water Pump Gasket 18-0415-9, Pkg of 2, Replaces OEM 27-F523031, Chrysler Inboard","description":"\u003cp\u003eThe Sierra 18-0415-9 is a water pump gasket sold in a package of 2, made for Chrysler inboard marine engine water pumps. This gasket creates the seal between the water pump housing and its mating surfaces, preventing raw water or coolant leaks at the pump. Because a worn or torn gasket is one of the most common causes of water pump leaks and reduced cooling performance, replacing it whenever the pump is serviced or rebuilt helps keep the cooling circuit sealed and functioning correctly.\u003c\/p\u003e\u003cp\u003eEach package contains 2 gaskets, so a single purchase covers a complete pump reseal or gives you a spare for a future service. The part is lightweight, with each package weighing 0.02 pounds, consistent with a thin, precision-cut gasket profile. It is cross-referenced to OEM part number 27-F523031, letting owners confirm fit against the original equipment number before ordering. The gasket is identified by UPC 808282161583 and is intended as a direct fit for the Chrysler inboard water pump application it is cataloged under, so no cutting or trimming should be needed during installation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-0415-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e Pkg of 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282161583\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Chrysler Inboard Water Pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 27-F523031\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eChrysler inboard marine engine water pumps.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e27-F523031\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-0415-9 water pump gasket fit?\u003c\/strong\u003e The 18-0415-9 is cataloged for Chrysler inboard marine engine water pumps, sealing the pump housing to its mating surface.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package of 18-0415-9?\u003c\/strong\u003e Each package of the Sierra 18-0415-9 contains 2 water pump gaskets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-0415-9 the same as OEM part 27-F523031?\u003c\/strong\u003e Yes, the Sierra 18-0415-9 water pump gasket is cross-referenced to replace OEM part number 27-F523031.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-0415-9 gasket package weigh?\u003c\/strong\u003e The package weighs 0.02 pounds, reflecting the thin, precision-cut profile typical of a water pump gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part?\u003c\/strong\u003e Yes, 18-0415-9 is a genuine Sierra water pump gasket, identified by UPC 808282161583.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to replace the gasket every time I service the water pump?\u003c\/strong\u003e A fresh gasket like the 18-0415-9 should be installed any time the water pump housing is removed, since reusing a compressed gasket can allow leaks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order 18-0415-9?\u003c\/strong\u003e The package includes 2 water pump gaskets for the Chrysler inboard water pump application; no other hardware is included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-0415-9 sold individually or only as a pair?\u003c\/strong\u003e Sierra sells this gasket as a package of 2 under part number 18-0415-9, not as a single individual gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM number should I check against before ordering 18-0415-9?\u003c\/strong\u003e Check your water pump housing against OEM number 27-F523031, which the 18-0415-9 gasket is designed to replace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-0415-9 gasket?\u003c\/strong\u003e The UPC for the Sierra 18-0415-9 water pump gasket package is 808282161583.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988073656539,"sku":"SIE-18-0415-9","price":6.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0415-9__43552.1722369702.500.750.jpg?v=1785187981"},{"product_id":"sierra-18-0916-water-pump-gasket-replaces-mercruiser-27-805215-1-sterndrive-water-pump-base-gasket","title":"Sierra 18-0916 Water Pump Gasket, Replaces Mercruiser 27-8052151, 27-805215, 27-94915, 27-72779","description":"\u003cp\u003eThe Sierra 18-0916 Water Pump Gasket is a round marine engine gasket designed to seal the water pump housing on inboard and sterndrive engines. It is built to meet or exceed the quality of the original equipment part it replaces, making it a reliable choice for engine maintenance and water pump rebuilds. This gasket is supplied as a single unit and is intended for direct replacement of a specific set of Mercruiser gaskets, so it is commonly used when servicing or rebuilding a water pump assembly on compatible marine engines. Because a worn or damaged water pump gasket can allow coolant or raw water to leak past the pump housing, replacing it with a properly sized, OEM-quality gasket like the 18-0916 helps maintain a correct seal and proper cooling flow. Boat owners and marine technicians use this gasket when installing a new water pump, rebuilding an existing pump, or performing routine cooling system maintenance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-0916\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 747730043470\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e27-8052151\u003c\/li\u003e\n\u003cli\u003e27-805215\u003c\/li\u003e\n\u003cli\u003e27-94915\u003c\/li\u003e\n\u003cli\u003e27-72779\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-0916 used for?\u003c\/strong\u003e It is a water pump gasket used to seal the water pump housing on a marine engine, sealing out leaks between the pump body and the engine block or housing it mounts to.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-0916 gasket replace Mercruiser part numbers?\u003c\/strong\u003e Yes, the Sierra 18-0916 is a direct replacement for Mercruiser 27-8052151, 27-805215, 27-94915, and 27-72779.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in one order of the 18-0916?\u003c\/strong\u003e One Sierra 18-0916 Water Pump Gasket is included per unit, sold individually rather than as a multi-pack.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape is the 18-0916 water pump gasket?\u003c\/strong\u003e The gasket has a round shape, matching the circular profile of the water pump housing it seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-0916 weigh?\u003c\/strong\u003e This gasket weighs 0.02 pounds, consistent with a thin, lightweight sealing component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0916 an OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-0916 is a Sierra-manufactured replacement gasket engineered to meet or exceed the quality of the original Mercruiser gasket it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-0916 fit any water pump gasket application?\u003c\/strong\u003e It is intended specifically for applications that originally used Mercruiser 27-8052151, 27-805215, 27-94915, or 27-72779, so confirm your engine's original gasket number matches one of these before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with the Sierra 18-0916?\u003c\/strong\u003e The Sierra 18-0916 Water Pump Gasket carries UPC 747730043470.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-0916 be used when rebuilding a water pump?\u003c\/strong\u003e Yes, this gasket is commonly installed during a water pump rebuild or replacement to restore a proper seal at the pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-0916 water pump gasket made from?\u003c\/strong\u003e The specific gasket material is not specified for the Sierra 18-0916; buyers needing exact material composition should confirm with additional engine documentation.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988086272219,"sku":"SIE-18-0916","price":5.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0916_lg__94277.1558119254.500.750.jpg?v=1785188517"},{"product_id":"sierra-18-0891-9-water-pump-mounting-gasket-pack-of-2-replaces-volvo-penta-omc-3852477-and-chris-craft-16-50-00078","title":"Sierra 18-0891-9 Water Pump Mounting Gasket, Replaces 27-34897, GM 4.3L 5.0L 5.8L, Pack of 2","description":"\u003cp\u003eThe Sierra 18-0891-9 Water Pump Mounting Gasket seals the water pump housing to the engine block on GM 4.3L, 5.0L, and 5.8L marine engines. Sold in a package of 2, this gasket is built to meet or exceed original equipment quality, giving a reliable, leak-free seal at the pump-to-block mating surface during routine water pump service, rebuilds, or replacement. Keeping a spare on hand is worthwhile since the gasket should always be replaced whenever the water pump is removed, rather than reused.\u003c\/p\u003e\u003cp\u003eThis mounting gasket is a direct cross-reference match for several OEM and aftermarket numbers, so it fits in place of the Mercruiser 27-34897, 27-34896, FI5000077, and FI5000078 gaskets used on the same GM-based engine platforms. Because it ships two to a package, one purchase covers both sides of a dual-pump job or provides a spare for the next service interval. As with any gasket, proper surface prep on the block and pump housing before installation helps ensure a tight, long-lasting seal.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-0891-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Mounting Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e Pack of 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e GM 4.3L, 5.0L \u0026amp; 5.8L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282161897\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 27-34897, 27-34896, FI5000077, FI5000078\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 90 days\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eGM 4.3L, 5.0L \u0026amp; 5.8L engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e27-34897\u003c\/li\u003e\n\u003cli\u003e27-34896\u003c\/li\u003e\n\u003cli\u003eFI5000077\u003c\/li\u003e\n\u003cli\u003eFI5000078\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-0891-9 water pump mounting gasket fit?\u003c\/strong\u003e The Sierra 18-0891-9 is designed for GM 4.3L, 5.0L, and 5.8L marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package of 18-0891-9?\u003c\/strong\u003e Each package of the Sierra 18-0891-9 water pump mounting gasket contains 2 gaskets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0891-9 gasket a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra-manufactured aftermarket replacement gasket, made to meet or exceed original equipment quality rather than being a Mercruiser-branded OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich Mercruiser part numbers does the 18-0891-9 gasket cross-reference?\u003c\/strong\u003e It replaces Mercruiser 27-34897, 27-34896, FI5000077, and FI5000078.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to replace this gasket every time I service the water pump?\u003c\/strong\u003e Yes, a water pump mounting gasket like the Sierra 18-0891-9 should be replaced whenever the water pump is removed, since a used gasket will not reseal reliably.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-0891-9?\u003c\/strong\u003e Ordering the Sierra 18-0891-9 gets you a package of 2 water pump mounting gaskets sized for GM 4.3L, 5.0L \u0026amp; 5.8L engines; no additional hardware is included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-0891-9 gasket weigh?\u003c\/strong\u003e The Sierra 18-0891-9 water pump mounting gasket weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat warranty applies to the Sierra 18-0891-9?\u003c\/strong\u003e The Sierra 18-0891-9 water pump mounting gasket carries a 90 day warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-0891-9 gasket on an engine other than GM 4.3L, 5.0L, or 5.8L?\u003c\/strong\u003e The 18-0891-9 is specified for GM 4.3L, 5.0L \u0026amp; 5.8L engines; fitment outside that range is not confirmed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-0891-9 come as a single gasket or a set?\u003c\/strong\u003e The 18-0891-9 is sold as a set, packaged 2 gaskets per unit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988086337755,"sku":"SIE-18-0891-9","price":4.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0891-9__32156.1737886565.500.750.jpg?v=1785188055"},{"product_id":"sierra-18-15111-v-belt-for-4-3l-v-6-5-7l-v-8-sterndrive-crank-to-alternator-drive-oe-ysc-10260-00-0c","title":"Sierra V-Belt 18-15111, Replaces YSC-10260-10-0C, for V-6 Sterndrive 4.3L\/V-8, 5.7L Crank\/Power Steering","description":"\u003cp\u003eThe Sierra V-Belt 18-15111 is a cogged marine engine belt built for sterndrive applications, specifically the crank\/power steering drive on V-6 Sterndrive 4.3L and V-8 5.7L engines. Sierra constructs this belt with high strength synthetic cords that resist shockload failure and hold low stretch properties, so the belt keeps uniform tension and performance over its service life. The compression section uses a special rubber compound engineered to transfer load forces smoothly and evenly from the pulley to the cords, reducing wear at the drive points.\u003c\/p\u003e\u003cp\u003eThe cogged profile is molded to precise engineering tolerances, which improves the belt's flexibility around smaller pulleys while still maintaining full cord support. The cog geometry also opens up a larger surface area for air circulation, which helps keep the belt cool and prevents damaging heat build-up in the cushion section during continuous operation. Rubber edges along the belt maintain positive, no-slip contact with the pulley grooves for reliable, consistent energy transfer to the crank and power steering pump.\u003c\/p\u003e\u003cp\u003eThis belt is a direct replacement for OEM part number YSC-10260-10-0C on the specified crank\/power steering application. It is sized at 0.39 x 0.39 x 0.39 inches and weighs 0.3 pounds.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-15111\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e V-6 Sterndrive 4.3L\/V-8, 5.7L (Crank\/Power Steering)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e YSC-10260-10-0C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282145460\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Cogged, synthetic cord reinforced rubber\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eV-6 Sterndrive 4.3L\/V-8, 5.7L engines, crank\/power steering application\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eYSC-10260-10-0C\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-15111 V-belt fit?\u003c\/strong\u003e The Sierra 18-15111 V-belt is built for the V-6 Sterndrive 4.3L\/V-8, 5.7L crank\/power steering application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-15111 an OEM or aftermarket belt?\u003c\/strong\u003e 18-15111 is a Sierra-manufactured belt made as a direct replacement for OEM part YSC-10260-10-0C, matching the original fit and function for the crank\/power steering drive.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-15111 replace?\u003c\/strong\u003e It replaces OEM number YSC-10260-10-0C on the V-6 Sterndrive 4.3L\/V-8, 5.7L crank\/power steering application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this belt?\u003c\/strong\u003e The Sierra 18-15111 V-belt measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-15111 V-belt weigh?\u003c\/strong\u003e This belt weighs 0.3 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the belt made of?\u003c\/strong\u003e Construction is a cogged, synthetic cord reinforced rubber design, with a special rubber compression compound and rubber edges that grip the pulley grooves.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does this belt have a cogged design instead of a smooth profile?\u003c\/strong\u003e The cogs on the 18-15111 are molded to precise tolerances so the belt flexes more easily around pulleys while keeping full cord support, and the cog geometry increases air circulation to prevent heat build-up in the cushion section.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this belt slip on the pulley over time?\u003c\/strong\u003e No, the rubber edges on the 18-15111 are designed to maintain positive, no-slip contact with the pulley grooves for reliable energy transfer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the belt stretch out after installation?\u003c\/strong\u003e The high strength synthetic cords in the 18-15111 have low stretch properties, so the belt maintains uniform performance rather than loosening over its service life.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order part 18-15111?\u003c\/strong\u003e Ordering 18-15111 includes one Sierra V-belt sized for the V-6 Sterndrive 4.3L\/V-8, 5.7L crank\/power steering application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the correct belt for the power steering pump drive, or is it for a different pulley?\u003c\/strong\u003e The 18-15111 is specified for the crank\/power steering application on the V-6 Sterndrive 4.3L\/V-8, 5.7L engine.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088041691,"sku":"SIE-18-15111","price":17.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-15111_lg__02435.1722516194.500.750.jpg?v=1785189189"},{"product_id":"mercruiser-v-belt-29-in-replaces-57-13457-57-53215-18-15290","title":"Sierra V-Belt 18-15290 for MerCruiser 8.2L MIE and 8.2L MPI MIE Engines","description":"\u003cp\u003eThe Sierra 18-15290 is a V-belt engineered as a direct fit replacement for MerCruiser 8.2L MIE and 8.2L MPI MIE sterndrive and inboard engines. This belt drives engine-mounted accessories such as the alternator and water circulation components, keeping charging and cooling systems running as the engine designer intended. Choosing the correct belt part number for your specific engine serial number range matters because MerCruiser revised belt specifications across production runs, and an incorrect belt can slip, wear prematurely, or fail to properly tension accessory drives.\u003c\/p\u003e\u003cp\u003eThis part number is confirmed for the MerCruiser 8.2L MIE (502 cid, 8-cylinder, 4-barrel) built within serial numbers C878221 through D857199, and for the MerCruiser 8.2L MPI MIE (502 cid, 8-cylinder, 4-barrel) built within serial numbers K147350 through K999999. Boat owners and marine technicians can use the engine serial number stamped on the block to confirm this belt is the correct match before ordering, since MerCruiser used different belt part numbers across other serial ranges on these same engine families.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-15290\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.18 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999566256\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 8.2L MIE (502 cid, 8-cylinder, 4-barrel), serial numbers C878221-D857199, 1990-1993\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.2L MPI MIE (502 cid, 8-cylinder, 4-barrel), serial numbers K147350-K999999, 1997\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-15290 V-belt fit?\u003c\/strong\u003e The Sierra 18-15290 fits the MerCruiser 8.2L MIE (502 cid, 8-cylinder, 4-barrel) built within serial numbers C878221-D857199, and the MerCruiser 8.2L MPI MIE (502 cid, 8-cylinder, 4-barrel) built within serial numbers K147350-K999999.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if 18-15290 is the right belt for my MerCruiser 8.2L engine?\u003c\/strong\u003e Check the engine serial number stamped on the block against the ranges C878221-D857199 (8.2L MIE) or K147350-K999999 (8.2L MPI MIE); if your engine falls in one of those ranges, the Sierra 18-15290 is the correct belt.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat years does the Sierra 18-15290 V-belt cover?\u003c\/strong\u003e This belt covers MerCruiser 8.2L MIE engines from 1990-1993 and MerCruiser 8.2L MPI MIE engines from 1997, based on the serial number ranges for those production years.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-15290 V-belt weigh?\u003c\/strong\u003e The Sierra 18-15290 V-belt weighs 0.18 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-15290 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-15290 is a Sierra brand V-belt manufactured for marine applications, not a generic aftermarket substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the 18-15290 V-belt drive on the engine?\u003c\/strong\u003e On the MerCruiser 8.2L MIE and 8.2L MPI MIE engines it fits, this V-belt drives engine-mounted accessories such as the alternator and cooling components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-15290 fit other MerCruiser 8.2L engine variants?\u003c\/strong\u003e No, 18-15290 is specified only for the 8.2L MIE (serial numbers C878221-D857199) and 8.2L MPI MIE (serial numbers K147350-K999999); other 8.2L serial ranges use different Sierra belt part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-15290 V-belt?\u003c\/strong\u003e The UPC for the Sierra 18-15290 V-belt is 030999566256.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install the Sierra 18-15290 V-belt myself?\u003c\/strong\u003e The 18-15290 is a standard accessory drive V-belt that can be installed using typical belt tensioning and replacement procedures for MerCruiser 8.2L MIE and 8.2L MPI MIE engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does the engine serial number matter for ordering this belt?\u003c\/strong\u003e MerCruiser 8.2L engines went through multiple belt specification changes across production, so the Sierra 18-15290 is matched to specific serial number ranges (C878221-D857199 for 8.2L MIE, K147350-K999999 for 8.2L MPI MIE) rather than fitting all 8.2L engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088238299,"sku":"SIE-18-15290","price":18.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-15290__82607.1737844508.500.750.jpg?v=1785329189"},{"product_id":"sierra-18-15400-v-belt-replaces-mercury-57-32850-57-69143t-40-in-effective-length-omc-gas","title":"Sierra 18-15400 V-Belt for 8.2L 502 CID MIE\/MPI\/600 SC Engines, Replaces Mercury Marine 57-32850","description":"\u003cp\u003eThe Sierra 18-15400 is a V-Belt designed as a drive belt replacement for 8.2L 502 CID, 8-cylinder marine engines. It is built to transfer power reliably between the crankshaft pulley and accessory components such as the water pump, alternator, or power steering pump on applicable engine applications. The belt is finished in black and is supplied as a single unit (1 count).\u003c\/p\u003e\u003cp\u003eThis V-Belt is engineered as a direct cross-reference replacement for the Mercury Marine 57-32850 and 57-69143T belts as well as the OMC 311606 belt, allowing owners to source a compatible replacement without needing the original manufacturer part number. It fits specific serial-number ranges across three 502 CID engine applications: the 8.2L 600 SC (1992-2000), the 8.2L MIE (1993-1997), and the 8.2L MPI MIE (1996-1997). Confirming the engine serial number against these ranges before ordering ensures the correct belt is installed.\u003c\/p\u003e\u003cp\u003eSierra manufactures this belt for straightforward removal-and-replacement service, making it a practical stocking item for scheduled maintenance or belt failure repairs on these MerCruiser-family 502 CID engines.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-15400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Style:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.19 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Displacement:\u003c\/strong\u003e 502 CID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinders:\u003c\/strong\u003e 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 57-32850, 57-69143T, 311606\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Serial Range, 8.2L 600 SC:\u003c\/strong\u003e D725676 - L601186\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Serial Range, 8.2L MIE:\u003c\/strong\u003e D857200 - K999999\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Serial Range, 8.2L MPI MIE:\u003c\/strong\u003e F819620 - K147349\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e8.2L 600 SC, 502 CID, 8-cylinder, 1992-2000, serial range D725676 - L601186\u003c\/li\u003e\n\u003cli\u003e8.2L MIE, 502 CID, 8-cylinder, 1993-1997, serial range D857200 - K999999\u003c\/li\u003e\n\u003cli\u003e8.2L MPI MIE, 502 CID, 8-cylinder, 1996-1997, serial range F819620 - K147349\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e57-32850\u003c\/li\u003e\n\u003cli\u003e57-69143T\u003c\/li\u003e\n\u003cli\u003e311606\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-15400 V-belt fit?\u003c\/strong\u003e The Sierra 18-15400 fits three 502 CID, 8-cylinder engine applications: the 8.2L 600 SC (1992-2000, serial range D725676 - L601186), the 8.2L MIE (1993-1997, serial range D857200 - K999999), and the 8.2L MPI MIE (1996-1997, serial range F819620 - K147349).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-15400 the same as the Mercury Marine 57-32850 belt?\u003c\/strong\u003e Yes, the Sierra 18-15400 is a direct cross-reference replacement for the Mercury Marine 57-32850 belt, along with the Mercury Marine 57-69143T and OMC 311606 belts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-15400 replace an OMC belt number?\u003c\/strong\u003e Yes, part 18-15400 cross-references to OMC belt number 311606 in addition to the Mercury Marine numbers 57-32850 and 57-69143T.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-15400 V-belt weigh?\u003c\/strong\u003e The Sierra 18-15400 V-belt weighs 0.19 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-15400 belt?\u003c\/strong\u003e The Sierra 18-15400 V-belt is black.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many belts come in the package?\u003c\/strong\u003e The Sierra 18-15400 is sold as a single V-belt (one unit per package).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if this belt fits my engine serial number?\u003c\/strong\u003e Check your engine's serial number against the ranges listed for the 18-15400: D725676 - L601186 for the 8.2L 600 SC, D857200 - K999999 for the 8.2L MIE, or F819620 - K147349 for the 8.2L MPI MIE, since fitment for this belt is serial-number specific within each model.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-15400 a V-belt or a serpentine belt?\u003c\/strong\u003e The 18-15400 is a V-belt style belt, not a serpentine belt.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the engine displacement for the applications this belt fits?\u003c\/strong\u003e All listed applications for the Sierra 18-15400 are 502 CID, 8-cylinder engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-15400 on a 1998-2001 8.2L 502 MAG MPI engine?\u003c\/strong\u003e No, the 8.2L 502 MAG MPI (1998-2001) uses a serpentine belt system with a different part number, not the 18-15400 V-belt.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-15400 an aftermarket or genuine part?\u003c\/strong\u003e The 18-15400 is manufactured by Sierra as a cross-reference replacement belt, not an original Mercury Marine or OMC branded part, though it is built to fit the same engine applications as OEM numbers 57-32850, 57-69143T, and 311606.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088303835,"sku":"SIE-18-15400","price":23.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-15400_lg__77057.1558120513.500.750.jpg?v=1785188039"},{"product_id":"sierra-18-15450-v-belt-45-effective-length-x-29-64-top-width-replaces-omc-3853331-volvo-penta-960336-stern-drive-belt","title":"Sierra V-Belt 18-15450, Replaces OMC 914787 and Volvo Penta 960336, 45 Inch Effective Length","description":"\u003cp\u003eThe Sierra V-Belt 18-15450 is an aftermarket drive belt built to OEM quality standards for marine gas engine applications, including OMC stern drive and Volvo Penta stern drive setups. It has a 45 inch effective length and a top width of 29\/64 inch (11.5mm), matching the dimensions of the original equipment belt it replaces. The belt is constructed with a synthetic fiber fabric cover, a special polyester cord, and a polychloroprene rubber body, giving it high strength against shock loads while keeping stretch low so tension and performance stay consistent over the life of the belt. The rubber compound in the body is formulated to transfer load forces evenly and smoothly to the internal cords, reducing slip and heat buildup during operation. Oil resistance and temperature stability are standard features of this belt's construction, which helps it hold up in the engine compartment environment typical of stern drive installations. The Sierra 18-15450 is designed as a direct cross-reference replacement for OMC and Volvo Penta belts sharing the part numbers listed below, so it installs using the same pulley alignment and tensioning as the original belt without modification.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-15450\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Volvo Penta V-Belts (Gas)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Length:\u003c\/strong\u003e 45 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop Width:\u003c\/strong\u003e 29\/64 inch (11.5mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.26 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Synthetic fiber fabric cover, polyester cord, polychloroprene rubber body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Devices:\u003c\/strong\u003e Outboard Motor, Stern Drive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999566553\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC stern drive gas engines\u003c\/li\u003e\n\u003cli\u003eVolvo Penta stern drive gas engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC: 914787, 3858462, 3853331\u003c\/li\u003e\n\u003cli\u003eVolvo Penta: 960336, 3858462, 3853331\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the effective length of the Sierra 18-15450 V-belt?\u003c\/strong\u003e The effective length is 45 inches (114.3cm), with a top width of 29\/64 inch (11.5mm), on the Sierra V-Belt 18-15450.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-15450 fit OMC stern drives?\u003c\/strong\u003e Yes, the Sierra 18-15450 cross-references to OMC stern drive belts 914787, 3858462, and 3853331.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this belt work on a Volvo Penta gas stern drive?\u003c\/strong\u003e The Sierra 18-15450 also cross-references to Volvo Penta belts 960336, 3858462, and 3853331, making it suitable for Volvo Penta gas stern drive applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-15450 V-belt made from?\u003c\/strong\u003e It is built with a synthetic fiber fabric cover, a special polyester cord, and a polychloroprene rubber body, which is the construction used across the Sierra 18-15450 belt.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does this compare to the original OMC or Volvo Penta belt?\u003c\/strong\u003e The Sierra 18-15450 is an aftermarket belt engineered to OEM quality, form, and function, so it matches the fit and performance of the original OMC and Volvo Penta belts it cross-references.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-15450 resistant to oil and heat?\u003c\/strong\u003e Oil resistance and temperature stability are standard on this belt, helping it hold up in the engine compartment where the 18-15450 is installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the belt stretch out over time?\u003c\/strong\u003e Low stretch properties are built into the Sierra 18-15450's cord construction to assure uniform performance over the life of the belt.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-15450?\u003c\/strong\u003e The order includes one Sierra V-Belt, part number 18-15450.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The Sierra 18-15450 is an aftermarket replacement belt, not an OEM-branded part, though it is designed to OEM quality standards and dimensions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of belt is the 18-15450?\u003c\/strong\u003e It is a V-belt, specifically categorized as a Volvo Penta V-belt for gas engine applications, cataloged under Sierra part number 18-15450.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-15450 weigh?\u003c\/strong\u003e The Sierra V-Belt 18-15450 weighs 0.26 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat keeps this belt from slipping under load?\u003c\/strong\u003e A special rubber compound section in the 18-15450 assures smooth and even transfer of load forces to the internal cords, reducing slip during operation.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088598747,"sku":"SIE-18-15450","price":20.62,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-15450_lg__83929.1722371608.500.750.jpg?v=1785188833"},{"product_id":"sierra-18-15520-v-belt-52-inch-replaces-mercruiser-57-33170-57-37619t-and-omc-912714","title":"Sierra V-Belt 18-15520 Replaces Mercury Marine 57-33170 for MerCruiser 4.3L 175\/185 HP Stern Drive","description":"\u003cp\u003eThe Sierra V-Belt 18-15520 is a replacement accessory drive belt engineered for MerCruiser 4.3L 175\/185 HP stern drive engines built with the 262 cid, 6-cylinder block. It is constructed from a rubber compound reinforced with high strength synthetic cords, a design intended to resist shock loading while keeping stretch to a minimum so belt tension and pulley alignment stay consistent over the belt's service life. The special rubber compound section is formulated to transfer load forces smoothly and evenly to the internal cords, reducing the slipping and glazing that shorten the life of a lower quality belt.\u003c\/p\u003e\u003cp\u003eThis is a standard V-belt profile (not serpentine), sized with an effective length of 52 inches and a top width of 29\/64 inch (11.5 mm). It fits MerCruiser 4.3L 175\/185 HP engines from the 1985-92 model years, within engine serial number range A331455 through D714106, and cross-references to Mercury Marine and OMC stern drive part numbers. Replacing a cracked, glazed, or stretched accessory belt with this part restores proper alternator, water pump, and power steering pulley drive on the applicable engine.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-15520\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Type:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Length:\u003c\/strong\u003e 52 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop Width:\u003c\/strong\u003e 29\/64 inch (11.5 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 52 inches long x 0.64 inch wide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.29 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999566690\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMerCruiser 4.3L 175\/185 HP stern drive engines, 262 cid, 6-cylinder, 1985-92, engine serial number range A331455 - D714106\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 57-33170\u003c\/li\u003e\n\u003cli\u003eMercury Marine 57-33170Q\u003c\/li\u003e\n\u003cli\u003eMercury Marine 57-37619\u003c\/li\u003e\n\u003cli\u003eMercury Marine 57-37619Q\u003c\/li\u003e\n\u003cli\u003eMercury Marine 57-37619T\u003c\/li\u003e\n\u003cli\u003eOMC 912714\u003c\/li\u003e\n\u003cli\u003eMallory 9-55001\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-15520 V-belt fit?\u003c\/strong\u003e This belt fits MerCruiser 4.3L 175\/185 HP stern drive engines with the 262 cid, 6-cylinder block, built within engine serial number range A331455 through D714106, covering the 1985-92 model years.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-15520 a V-belt or a serpentine belt?\u003c\/strong\u003e Sierra part 18-15520 is a standard V-belt profile, not a serpentine belt, with an effective length of 52 inches and a top width of 29\/64 inch (11.5 mm).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this belt replace?\u003c\/strong\u003e The Sierra 18-15520 cross-references to Mercury Marine 57-33170, 57-33170Q, 57-37619, 57-37619Q, and 57-37619T, as well as OMC 912714 and Mallory 9-55001.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-15520 V-belt made from?\u003c\/strong\u003e It is made from a rubber compound reinforced with high strength synthetic cords, a construction meant to resist shock loading and keep stretch low over the belt's service life.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-15520 V-belt weigh?\u003c\/strong\u003e This V-belt weighs 0.29 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-15520 belt?\u003c\/strong\u003e The belt measures 52 inches long with a top width of 29\/64 inch (11.5 mm); overall listed item dimensions are 52 inches long by 0.64 inch wide.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this belt fit an OMC stern drive as well as a MerCruiser?\u003c\/strong\u003e Yes, in addition to its MerCruiser 4.3L 175\/185 HP fitment, the 18-15520 cross-references to OMC stern drive part number 912714.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-15520 a genuine OEM belt or an aftermarket replacement?\u003c\/strong\u003e The 18-15520 is a Sierra-branded aftermarket replacement belt engineered to the same fit and function as the Mercury Marine and OMC part numbers it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order part 18-15520?\u003c\/strong\u003e Each order includes one Sierra 18-15520 V-belt; no pulleys, tensioners, or hardware are included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my engine's serial number is within the fitment range for this belt?\u003c\/strong\u003e Check your engine's serial number plate against the range A331455 through D714106; if your MerCruiser 4.3L 175\/185 HP engine falls within that range, the 18-15520 is the correct belt.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would a boat owner need to replace this V-belt?\u003c\/strong\u003e Accessory drive belts like the 18-15520 stretch, crack, or glaze over time from heat and flexing, which can cause slipping at the alternator or water pump pulleys, so periodic replacement with 18-15520 keeps the drive system operating correctly.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088631515,"sku":"SIE-18-15520","price":30.12,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-15520_lg__79434.1722347498.500.750.jpg?v=1785188065"},{"product_id":"sierra-18-15480-marine-v-belt-48-29-64-in-replaces-mercruiser-57-48122-57-48122q-mallory-9-55003","title":"Sierra 18-15480 V-Belt for MerCruiser 8.2L MIE and 8.2L MPI MIE 502 Engines, White","description":"\u003cp\u003eThe Sierra 18-15480 is a white V-belt engineered for MerCruiser 8.2L MIE and 8.2L MPI MIE stern drive engines with the 502 cid, 8-cylinder, 4-barrel configuration. This belt drives engine accessories off the crankshaft pulley and is built to meet or exceed the original equipment part it replaces, so it holds up to the heat, oil exposure, and constant flexing found in a marine engine bay.\u003c\/p\u003e\u003cp\u003eFitment is tied to specific engine serial number ranges across several production runs of the 8.2L MIE and 8.2L MPI MIE, so buyers should confirm their engine's serial number falls within the ranges listed below before ordering. The belt is also cross-referenced to common Mallory and Mercruiser part numbers, making it a straightforward swap for boaters replacing a worn OEM belt or working from an existing cross-reference number.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-15480\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Style:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.28 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Devices:\u003c\/strong\u003e Boat, Vehicle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999566614\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e Mallory 9-55003, Mercruiser 57-48122, 57-48122Q\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 8.2L MIE, 502 cid, 8 cylinder, 4 barrel, 1990-1993, serial number C878221 - D857199\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.2L MIE, 502 cid, 8 cylinder, 4 barrel, 1993-1997, serial number D857200 - K999999\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.2L MPI MIE, 502 cid, 8 cylinder, 4 barrel, 1996-1997, serial number F819620 - K147349\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.2L MPI MIE, 502 cid, 8 cylinder, 4 barrel, 1997, serial number K147350 - K999999\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMallory 9-55003\u003c\/li\u003e\n\u003cli\u003eMercruiser 57-48122\u003c\/li\u003e\n\u003cli\u003eMercruiser 57-48122Q\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-15480 V-belt fit?\u003c\/strong\u003e The Sierra 18-15480 fits MerCruiser 8.2L MIE and 8.2L MPI MIE engines with the 502 cid, 8-cylinder, 4-barrel configuration, matched to specific engine serial number ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if this belt fits my specific engine?\u003c\/strong\u003e Match your MerCruiser engine's serial number to one of the ranges covered by the 18-15480, such as C878221 - D857199 or D857200 - K999999 for the 8.2L MIE, or F819620 - K147349 and K147350 - K999999 for the 8.2L MPI MIE.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-15480 V-belt?\u003c\/strong\u003e This Sierra V-belt is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-15480 weigh?\u003c\/strong\u003e The 18-15480 V-belt weighs 0.28 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-15480 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-15480 is a Sierra aftermarket belt manufactured to meet or exceed the original equipment part it replaces on MerCruiser 8.2L engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-15480 replace?\u003c\/strong\u003e The 18-15480 cross-references to Mallory 9-55003 and Mercruiser 57-48122 and 57-48122Q.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-15480 made of?\u003c\/strong\u003e The Sierra 18-15480 V-belt is constructed of alloy steel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-15480 fit the MerCruiser 502 8.2L MPI in addition to the standard 8.2L MIE?\u003c\/strong\u003e Yes, the 18-15480 covers both the 8.2L MIE and 8.2L MPI MIE variants of the 502 cid, 8-cylinder, 4-barrel MerCruiser engine, within the listed serial number ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the box with the 18-15480?\u003c\/strong\u003e Each order includes one Sierra 18-15480 V-belt.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-15480 belt style a V-belt or a serpentine belt?\u003c\/strong\u003e The 18-15480 is a V-belt style, not a serpentine belt.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-15480 as a direct swap for a worn Mercruiser 57-48122 belt?\u003c\/strong\u003e Yes, the 18-15480 is cross-referenced to the Mercruiser 57-48122 and 57-48122Q, so it can be used as a direct replacement for those part numbers.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088664283,"sku":"SIE-18-15480","price":23.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-15480__41094.1737858828.500.750.jpg?v=1785189001"},{"product_id":"sierra-18-15460-v-belt-46-in-x-29-64-in-replaces-mercruiser-57-48120a1-volvo-penta-950818-omc-310953","title":"Sierra 18-15460 V-Belt for Mercruiser 5.7L 350 MAG MPI\/SKI 1995-1996, Replaces 57-48120A1","description":"\u003cp\u003eThe Sierra 18-15460 is a V-belt engineered for Mercruiser 5.7L 350 MAG MPI and 350 MAG SKI stern drive engines built in 1995-1996, covering serial numbers F350583 through F799999. This belt drives the water pump and other engine-driven accessories, and it is built to meet or exceed the specifications of the original equipment belt it replaces. The 18-15460 supersedes the earlier Sierra part number 18-15290 and cross-references directly to Mercruiser 57-48120, 57-48120A1, and 57-48120Q1, giving boat owners a reliable direct-fit replacement without hunting for a discontinued OEM number. It also cross-references to OMC 310953 and 909971, Evinrude\/Johnson 909971, Mallory 9-55002, and Volvo Penta 950818 and 829207, making it a useful reference point for cross-brand interchange on comparable belt-driven marine engines. The belt has an effective length of 46 inches and weighs 0.26 pounds. Correct belt selection depends on matching your engine's exact model and serial number range, since Mercruiser and MerCruiser-family engines used several different belt part numbers across model years; the 18-15460 is specific to the 1995-1996 350 MAG MPI\/SKI serial range noted above. Always confirm your engine's serial number before ordering to ensure proper fit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-15460\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Style:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Length:\u003c\/strong\u003e 46 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e 5.7L 350 MAG MPI \/ 350 MAG SKI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment Years:\u003c\/strong\u003e 1995-1996\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Displacement:\u003c\/strong\u003e 350 cid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinders:\u003c\/strong\u003e 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Number Range:\u003c\/strong\u003e F350583 - F799999\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.26 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999566577\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes Sierra Part Number:\u003c\/strong\u003e 18-15290\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchangeable With:\u003c\/strong\u003e Mercruiser 57-48120, 57-48120A1, 57-48120Q1; OMC 310953, 909971; Evinrude\/Johnson 909971; Mallory 9-55002; Volvo Penta 950818, 829207\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercruiser 5.7L 350 MAG MPI, 1995-1996, serial numbers F350583 - F799999\u003c\/li\u003e\n\u003cli\u003eMercruiser 5.7L 350 MAG SKI, 1995-1996, serial numbers F350583 - F799999\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSierra 18-15290\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-15460 V-belt fit?\u003c\/strong\u003e The Sierra 18-15460 fits Mercruiser 5.7L 350 MAG MPI and 350 MAG SKI engines built in 1995-1996, covering serial numbers F350583 through F799999.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-15460 the same as Mercruiser 57-48120A1?\u003c\/strong\u003e Yes, the 18-15460 cross-references directly to Mercruiser 57-48120, 57-48120A1, and 57-48120Q1, so it is a suitable replacement for those part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long is this V-belt?\u003c\/strong\u003e The Sierra 18-15460 has an effective length of 46 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-15460 replace an older Sierra part number?\u003c\/strong\u003e Yes, the 18-15460 supersedes the earlier Sierra part number 18-15290.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat other OEM numbers does the Sierra 18-15460 cross-reference?\u003c\/strong\u003e Beyond Mercruiser, the 18-15460 cross-references to OMC 310953 and 909971, Evinrude\/Johnson 909971, Mallory 9-55002, and Volvo Penta 950818 and 829207.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-15460 V-belt weigh?\u003c\/strong\u003e The 18-15460 weighs 0.26 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-15460 a genuine OEM belt or an aftermarket part?\u003c\/strong\u003e The 18-15460 is a Sierra aftermarket belt built to meet or exceed the specifications of the original equipment belt it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the Sierra 18-15460?\u003c\/strong\u003e One Sierra 18-15460 V-belt is included per unit ordered.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the Sierra 18-15460 fit a 350 MIE engine?\u003c\/strong\u003e No, the 18-15460 is specific to the 5.7L 350 MAG MPI and 350 MAG SKI engines built in 1995-1996; 350 MIE engines use different Sierra belt part numbers for their respective serial ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I confirm the 18-15460 is correct for my boat before ordering?\u003c\/strong\u003e Check your Mercruiser 5.7L 350 MAG MPI or 350 MAG SKI engine's serial number against the F350583 - F799999 range covered by the Sierra 18-15460 to confirm fitment before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the Sierra 18-15460 replace a Volvo Penta or OMC belt?\u003c\/strong\u003e Yes, the 18-15460 cross-references to Volvo Penta 950818 and 829207 and OMC 310953 and 909971, making it usable as a replacement for those numbers on compatible engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088697051,"sku":"SIE-18-15460","price":28.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-15460_lg__71653.1558121075.500.750.jpg?v=1785188494"},{"product_id":"sierra-18-15490-v-belt-52-1-2-in-effective-length-replaces-mercury-mercruiser-57-816295t-57-816295q","title":"Sierra V-Belt 18-15490, Replaces Mercury Marine 57-816295T, for Mercruiser 4.3L Gen II and 4.3LX Engines","description":"\u003cp\u003eThe Sierra 18-15490 V-Belt is a white rubber drive belt engineered for Mercruiser 4.3L engine applications, including the 4.3L Gen II (2bbl) and 4.3LX (4bbl) engine builds. It is built with a cogged profile molded to precise engineering tolerances, which improves belt flexibility while keeping the cord structure well supported through each rotation. Inside the belt, high-strength synthetic cords resist shock loading and hold a low-stretch profile, so the belt maintains uniform performance over its service life instead of loosening prematurely. The open cog design also increases the surface area exposed to air circulation, helping keep the belt running cooler and reducing heat buildup during extended operation. Rubber edges are formulated to maintain positive, no-slip contact inside the pulley grooves, which keeps energy transfer consistent and reduces the chance of belt slip under load. A special rubber compound section works together with the internal cords to ensure load forces are transferred smoothly and evenly rather than in sudden jolts. Measuring an effective length of 52 1\/2 inches with a top width of 29\/64 inch, this V-belt is designed as a direct fit for Mercruiser 4.3L Gen II and 4.3LX engines within the serial number ranges noted below.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-15490\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Length:\u003c\/strong\u003e 52 1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop Width:\u003c\/strong\u003e 29\/64 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.25 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e Mercury Marine 57-816295T\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercruiser 4.3L Gen II (2bbl), 262 cid, V6, serial number range OD714107-OF802999\u003c\/li\u003e\n\u003cli\u003eMercruiser 4.3LX (4bbl), 262 cid, V6, serial number range OB775130-OD714369\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine 57-816295T\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-15490 V-belt fit?\u003c\/strong\u003e The Sierra 18-15490 V-belt fits Mercruiser 4.3L Gen II (2bbl) engines within serial number range OD714107-OF802999 and Mercruiser 4.3LX (4bbl) engines within serial number range OB775130-OD714369.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-15490 belt the same as Mercury Marine 57-816295T?\u003c\/strong\u003e Yes, Sierra part 18-15490 is a direct cross-reference to Mercury Marine part 57-816295T for the same Mercruiser 4.3L engine applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this V-belt?\u003c\/strong\u003e The 18-15490 V-belt has an effective length of 52 1\/2 inches and a top width of 29\/64 inch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-15490 V-belt weigh?\u003c\/strong\u003e This V-belt weighs 0.25 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-15490 V-belt made from?\u003c\/strong\u003e It is made from rubber, with high-strength synthetic cords inside the belt body to resist shock loading and stretch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-15490 belt?\u003c\/strong\u003e The 18-15490 V-belt is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does this belt have a cogged design?\u003c\/strong\u003e The cogs on the Sierra 18-15490 are molded to precise engineering tolerances to improve flexibility and maintain cord support, and the open cog profile increases air circulation to help keep the belt cool and reduce heat buildup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this belt slip on the pulley over time?\u003c\/strong\u003e The rubber edges of the 18-15490 are designed to maintain positive, no-slip contact with the pulley grooves for reliable, consistent energy transfer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-15490 a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e 18-15490 is the Sierra manufacturer part number itself, not an aftermarket copy of another brand's belt.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-15490 belt work with the 4.3LX 4bbl engine specifically?\u003c\/strong\u003e Yes, one of its two listed applications is the Mercruiser 4.3LX (4bbl) engine, within serial number range OB775130-OD714369.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order this part?\u003c\/strong\u003e Ordering Sierra 18-15490 includes one V-belt sized for the Mercruiser 4.3L Gen II and 4.3LX engine applications listed for this part number.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088729819,"sku":"SIE-18-15490","price":45.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-15490_lg__76250.1722495373.500.750.jpg?v=1785188407"},{"product_id":"sierra-18-15550-v-belt-for-mercruiser-replaces-57-13458t-55-in-x-29-64-in","title":"Sierra V-Belt 18-15550, 55 Inch, Fits 7.4L 454 MAG ALPHA 1986-1988 and 454 MAG 1988-92 Engines","description":"\u003cp\u003eThe Sierra 18-15550 is a 55 inch V-belt built for marine engine service, designed to deliver OEM-quality fit, form, and function on applicable 7.4L 454 MAG engines. It is constructed with a synthetic fiber fabric cover, a special polyester cord, and a polychloroprene rubber body, giving the belt oil resistance and temperature stability for use in the demanding environment of a boat engine compartment. The polyester cord provides tensile strength to resist stretching under load, while the polychloroprene rubber compound resists cracking and glazing from heat cycling and exposure to engine fluids.\u003c\/p\u003e\u003cp\u003eThis belt is engineered as a drop-in replacement sized specifically for the 55 inch belt position on covered MerCruiser 454 MAG applications, so installers do not need to guess at length or cross-section. It fits the 7.4L 454 MAG ALPHA engine (454 cid, 8 cylinder, serial number range A631894 - B785148) and the 7.4L 454 MAG engine (454 cid, 8 cylinder, serial number range B721206 - D805068). Each belt ships as a single unit and is finished in white.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-15550\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Length:\u003c\/strong\u003e 55 inches (1397 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Displacement:\u003c\/strong\u003e 454 cid (7.4L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Cylinders:\u003c\/strong\u003e 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplicable Serial Number Range:\u003c\/strong\u003e A631894 - B785148 (454 MAG ALPHA); B721206 - D805068 (454 MAG)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.31 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Synthetic fiber fabric cover, polyester cord, polychloroprene rubber body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999566744\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e7.4L 454 MAG ALPHA, 1986-1988, 454 cid, 8 cylinder, serial number range A631894 - B785148\u003c\/li\u003e\n\u003cli\u003e7.4L 454 MAG, 1988-92, 454 cid, 8 cylinder, serial number range B721206 - D805068\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-15550 V-belt fit?\u003c\/strong\u003e The Sierra 18-15550 fits the 7.4L 454 MAG ALPHA engine (1986-1988, 454 cid, 8 cylinder, serial number range A631894 - B785148) and the 7.4L 454 MAG engine (1988-92, 454 cid, 8 cylinder, serial number range B721206 - D805068).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long is the 18-15550 belt?\u003c\/strong\u003e This belt measures 55 inches (1397 mm) in length, sized for the 55 inch belt position on its covered MerCruiser 454 MAG applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-15550 belt made of?\u003c\/strong\u003e It is built with a synthetic fiber fabric cover over a special polyester cord and a polychloroprene rubber body, giving the belt oil resistance and temperature stability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-15550 an OEM-quality belt?\u003c\/strong\u003e Yes, the 18-15550 is manufactured to be correct in fit, form, and function for its listed 454 MAG applications, matching OEM belt performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my engine's serial number matches this belt?\u003c\/strong\u003e Check your engine's serial number against the ranges A631894 - B785148 for the 7.4L 454 MAG ALPHA or B721206 - D805068 for the 7.4L 454 MAG; the 18-15550 is built for engines within these ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-15550 V-belt?\u003c\/strong\u003e The belt is white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many belts come in a package?\u003c\/strong\u003e Each package of the Sierra 18-15550 contains a single V-belt.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-15550 V-belt weigh?\u003c\/strong\u003e It weighs 0.31 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-15550 resist heat and oil exposure?\u003c\/strong\u003e Yes, the polychloroprene rubber body and polyester cord construction give this belt oil resistance and temperature stability suited to a marine engine compartment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-15550 fit any 454 MAG engine, or just certain serial numbers?\u003c\/strong\u003e It is built for 7.4L 454 MAG and 454 MAG ALPHA engines within the specific serial number ranges A631894 - B785148 and B721206 - D805068; engines outside those ranges may require a different belt length.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-15550 belt?\u003c\/strong\u003e The UPC for the Sierra 18-15550 V-belt is 030999566744.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088893659,"sku":"SIE-18-15550","price":30.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-15550__42192.1737842686.500.750.jpg?v=1785188066"},{"product_id":"impeller-gasket-for-mercury-mariner-75-90-100-115-hp-replaces-oem-27-817277-2-pack-sierra-18-2566","title":"Sierra Impeller Gasket 18-2566-9, Replaces 27-430472, for Mercruiser Alpha I Generation 2, Pack of 2","description":"\u003cp\u003eThe Sierra 18-2566-9 is an impeller gasket for the Mercruiser Alpha I - Generation 2 stern drive water pump, sold as a package of 2 gaskets. This gasket seats between the water pump housing and the impeller cavity to maintain a proper seal as raw water is drawn through the pump, preventing leaks and air intrusion that can reduce cooling flow. Because the gasket is a wear item that compresses and can tear during service, it is routinely replaced any time the water pump is opened up, such as during an impeller replacement or a full water pump rebuild. Installing a fresh gasket rather than reusing the old one helps ensure the pump housing seats correctly and seals under pressure, which protects engine cooling performance. This part is packaged two to a unit, so a single purchase supplies enough gaskets for one full water pump service with a spare on hand, or for two separate service jobs. It is designed as a direct fit for the Mercruiser Alpha I - Generation 2 application and cross-references to OEM part number 27-430472 for buyers matching against an original Mercruiser part number.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2566-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 2 gaskets per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282163006\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Cooling System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Impeller gasket \/ water pump gasket\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercruiser Alpha I - Generation 2 stern drive water pump\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e27-430472\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2566-9 impeller gasket fit?\u003c\/strong\u003e It fits the Mercruiser Alpha I - Generation 2 stern drive water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package of 18-2566-9?\u003c\/strong\u003e The 18-2566-9 is sold as a package of 2 gaskets, enough for one full water pump service with a spare or two separate jobs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-2566-9 equivalent to Mercruiser part 27-430472?\u003c\/strong\u003e Yes, Sierra 18-2566-9 cross-references directly to Mercruiser OEM part number 27-430472.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this impeller gasket be replaced?\u003c\/strong\u003e The gasket should be replaced any time the Alpha I - Generation 2 water pump is opened, such as during an impeller swap or a full water pump rebuild, since it compresses and can tear during service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2566-9 gasket package weigh?\u003c\/strong\u003e The Sierra 18-2566-9 impeller gasket package weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the old gasket be reused instead of installing 18-2566-9?\u003c\/strong\u003e Reusing a worn gasket is not recommended, because a compressed or torn gasket will not seal the water pump housing properly; installing a fresh 18-2566-9 gasket ensures a proper seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2566-9 gasket?\u003c\/strong\u003e The UPC for the Sierra 18-2566-9 impeller gasket package is 808282163006.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2566-9 fit other Mercruiser Alpha drive generations?\u003c\/strong\u003e This gasket is specified for the Alpha I - Generation 2 water pump; other Alpha drive generations use different gasket part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2566-9 gasket genuine Sierra or aftermarket equivalent?\u003c\/strong\u003e The 18-2566-9 is a Sierra-branded part manufactured to fit the Mercruiser Alpha I - Generation 2 water pump as a cross-reference to OEM number 27-430472.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of part is 18-2566-9?\u003c\/strong\u003e 18-2566-9 is an impeller gasket within the Mercruiser cooling system parts group, used to seal the water pump during impeller service.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107178203,"sku":"SIE-18-2566-9","price":6.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2566-9__61182.1737842640.500.750.jpg?v=1785329167"},{"product_id":"sierra-18-2563-9-impeller-gasket-2-pack-for-honda-bf8-bf9-9-bf15-bf20-outboards-replaces-19232-zw1-003","title":"Sierra 18-2563-9 Impeller Gasket, Replaces Honda 19232-ZW1-003, Fits BF8\/BF9.9\/BF15\/BF20 Outboards - Pack of 2","description":"\u003cp\u003eThe Sierra 18-2563-9 Impeller Gasket is a glass-material gasket engineered to seal the water pump housing on select Honda BF-series outboards. Sold in a pack of 2, it gives owners a spare on hand for the next scheduled water pump service, since impeller gaskets are a wear item that should be replaced whenever the housing is opened. Each gasket is manufactured to meet or exceed original equipment quality, so it seals and fits like the factory part it replaces.\u003c\/p\u003e\u003cp\u003eThis gasket fits Honda BF8 outboards from 2002 and up, BF9.9 outboards from 2002 and up, and BF15 and BF20 outboards from 2003 and up. It directly replaces the Honda OEM gasket numbered 19232-ZW1-003, making it a straightforward drop-in during impeller replacement or general water pump maintenance. At 0.25 inches thick, it is sized to match the original gasket's sealing profile.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2563-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Pack of 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 19232-ZW1-003\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Honda BF8 (2002 \u0026amp; Up), BF9.9 (2002 \u0026amp; Up), BF15 (2003 \u0026amp; Up), BF20 (2003 \u0026amp; Up)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282162979\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHonda BF8, 2002 \u0026amp; Up\u003c\/li\u003e\n\u003cli\u003eHonda BF9.9, 2002 \u0026amp; Up\u003c\/li\u003e\n\u003cli\u003eHonda BF15, 2003 \u0026amp; Up\u003c\/li\u003e\n\u003cli\u003eHonda BF20, 2003 \u0026amp; Up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e19232-ZW1-003\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards does the Sierra 18-2563-9 impeller gasket fit?\u003c\/strong\u003e It fits Honda BF8 outboards from 2002 and up, BF9.9 outboards from 2002 and up, and BF15 and BF20 outboards from 2003 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this gasket replace the Honda OEM part?\u003c\/strong\u003e Yes, the Sierra 18-2563-9 directly replaces Honda OEM gasket number 19232-ZW1-003.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package?\u003c\/strong\u003e The 18-2563-9 is sold as a pack of 2 gaskets, giving you a spare for the next water pump service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the impeller gasket made from?\u003c\/strong\u003e The Sierra 18-2563-9 gasket is made of glass material.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow thick is the Sierra 18-2563-9 gasket?\u003c\/strong\u003e It measures 0.25 inches thick.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the gasket weigh?\u003c\/strong\u003e Each pack of the Sierra 18-2563-9 weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace this impeller gasket?\u003c\/strong\u003e Replace the gasket any time the water pump housing on a compatible Honda BF outboard is opened, such as during impeller replacement or routine water pump maintenance, since gaskets should not be reused.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2563-9 genuine Honda or aftermarket?\u003c\/strong\u003e It is a Sierra-manufactured aftermarket gasket built to meet or exceed the quality of the original Honda 19232-ZW1-003 equipment it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this gasket work on a Honda BF20 from any year?\u003c\/strong\u003e It is confirmed for Honda BF20 outboards from 2003 and up; earlier BF20 model years are not covered by this listing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-2563-9?\u003c\/strong\u003e Your order includes 2 impeller gaskets, part number Sierra 18-2563-9, with no additional hardware.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use 18-2563-9 on a BF9.9 built before 2002?\u003c\/strong\u003e No, the Sierra 18-2563-9 is specified for Honda BF9.9 outboards from 2002 and up only.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107571419,"sku":"SIE-18-2563-9","price":5.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-2563-9__47882.1737841523.500.750.jpg?v=1785187970"},{"product_id":"sierra-18-2557-9-impeller-gasket-2-pack-replaces-oem-332108-fits-3-cylinder-evinrude-johnson-outboards","title":"Sierra 18-2557-9 Impeller Gasket - Replaces 332108 - Fits 3 Cylinder Outboards - Pack of 2","description":"\u003cp\u003eThe Sierra 18-2557-9 Impeller Gasket is a replacement gasket engineered to seal the water pump impeller housing on 3 cylinder outboard engines. Sold as a pack of 2, it gives you a spare on hand for the next service interval or lets you replace both gaskets in a two-pump job without ordering twice. Each gasket measures 0.25 inches in thickness, matching the original equipment specification so the impeller housing seats correctly and maintains proper cooling water flow.\u003c\/p\u003e\u003cp\u003eThis gasket is manufactured to meet or exceed the quality of the original equipment part it replaces, helping prevent water intrusion and pump housing leaks that can lead to overheating. It is a straightforward, inexpensive part to swap during a routine impeller replacement or whenever the water pump housing is opened up for inspection.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2557-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e Pack of 2 gaskets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Thickness:\u003c\/strong\u003e 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282162917\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 3 cylinder outboard engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 332108\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e3 cylinder outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e332108\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2557-9 impeller gasket fit?\u003c\/strong\u003e This gasket is designed for 3 cylinder outboard engines and seals the water pump impeller housing on that engine family.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a pack?\u003c\/strong\u003e The 18-2557-9 is sold as a pack of 2 gaskets, giving you a spare or enough for two separate installations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-2557-9 replace?\u003c\/strong\u003e It replaces OEM part number 332108, so it can be used as a direct equivalent for that reference number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow thick is the 18-2557-9 gasket?\u003c\/strong\u003e Each gasket measures 0.25 inches thick, matching the original specification for a proper seal against the impeller housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2557-9 weigh?\u003c\/strong\u003e The pack weighs 0.02 pounds, reflecting the lightweight nature of a thin gasket set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The Sierra 18-2557-9 is an aftermarket gasket manufactured to meet or exceed the quality of the original equipment part it replaces, OEM number 332108.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace this gasket?\u003c\/strong\u003e Replace the 18-2557-9 gasket any time the water pump impeller housing is opened for an impeller swap or inspection, since a reused gasket can leak.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this product?\u003c\/strong\u003e The UPC for the Sierra 18-2557-9 impeller gasket pack is 808282162917.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this gasket on a V-6 or V-8 engine?\u003c\/strong\u003e No, the 18-2557-9 is specified for 3 cylinder outboard engines only; V-4, V-6, and V-8 applications use a different Sierra gasket part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the package?\u003c\/strong\u003e The package contains 2 impeller gaskets, part number 18-2557-9, with no additional hardware included.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107604187,"sku":"SIE-18-2557-9","price":5.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2557-9__12978.1737834215.500.750.jpg?v=1785188005"},{"product_id":"sierra-18-2608-water-pump-gasket-for-honda-bf8a-8-hp-outboard-honda-code-6315386-mpn-118-2608","title":"Sierra 18-2608 Water Pump Gasket for Honda BF8A 8 HP Outboard Motors","description":"\u003cp\u003eThe Sierra 18-2608 is a water pump gasket engineered for Honda BF8A 8 HP outboard motors. It is the gasket component of the water pump impeller service kit, designed to seal the water pump housing against the powerhead so the impeller can draw and circulate cooling water without leaks. Replacing this gasket is a standard part of a water pump service, typically performed alongside the impeller itself to restore proper cooling system sealing and prevent water intrusion or loss of pump pressure.\u003c\/p\u003e\u003cp\u003eThis gasket is sold as an individual component, separate from the impeller and the housing, so it can be used on its own for a gasket-only refresh or as part of a complete water pump rebuild. It is manufactured to fit the specified Honda BF8A engine coverage listed below, using the Honda engine code referenced for this application.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2608\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282227784\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Make:\u003c\/strong\u003e Honda\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Model:\u003c\/strong\u003e BF8A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 8 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda Engine Code:\u003c\/strong\u003e 6315386\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHonda BF8A, 8 HP, model years 1998-00\u003c\/li\u003e\n\u003cli\u003eHonda BF8A, 8 HP, model years 2003-06\u003c\/li\u003e\n\u003cli\u003eHonda BF8A, 8 HP, K0\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-2608 gasket used for?\u003c\/strong\u003e The Sierra 18-2608 is a water pump gasket for Honda BF8A 8 HP outboard motors, used to seal the water pump housing during a water pump or impeller service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2608 gasket fit Honda BF8A 8 HP outboards?\u003c\/strong\u003e Yes, the 18-2608 gasket is fitted to Honda BF8A 8 HP outboard motors covering model years 1998-00, 2003-06, and K0.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this gasket come with the impeller or housing?\u003c\/strong\u003e No, Sierra 18-2608 is the gasket only; the impeller and housing for the Honda BF8A water pump are separate part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2608 gasket weigh?\u003c\/strong\u003e The Sierra 18-2608 gasket weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat Honda engine code corresponds to this gasket's fitment?\u003c\/strong\u003e The Honda engine code associated with the BF8A 8 HP fitment for the 18-2608 gasket is 6315386.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2608 an OEM Honda part?\u003c\/strong\u003e The 18-2608 is a Sierra-branded gasket manufactured to fit Honda BF8A 8 HP outboard motors; it is not an OEM Honda-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould the gasket be replaced when servicing the water pump impeller?\u003c\/strong\u003e Yes, replacing the gasket along with the impeller during a Honda BF8A water pump service helps ensure a proper seal and prevent cooling system leaks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2608 gasket fit Honda BF8A engines with K2 or K3 codes?\u003c\/strong\u003e The 18-2608 fitment listing for Honda BF8A includes K0; K2 and K3 designations are not listed for this specific gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when ordering the 18-2608?\u003c\/strong\u003e Ordering the Sierra 18-2608 includes the single water pump gasket only, without the impeller or housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2608 gasket specific to the BF8A model only?\u003c\/strong\u003e Yes, based on its listed fitment, the Sierra 18-2608 gasket is specified for the Honda BF8A 8 HP outboard motor.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107735259,"sku":"SIE-18-2608","price":5.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2608_lg__41958.1558122211.500.750.jpg?v=1785329144"},{"product_id":"wear-plate-gasket-2-pack-replaces-mercury-322858-fits-v-4-v-6-outboards-sierra-18-2709","title":"Sierra Wear Plate Gasket 18-2709-9, Replaces Mercury 336530, V-4\/V-6 Outboard, Pack of 2","description":"\u003cp\u003eThe Sierra Wear Plate Gasket, part number 18-2709-9, seals the wear plate against the water pump housing on V-4\/V-6 Mercury outboard engines. This gasket is a critical component of the lower unit water pump assembly, forming the seal that keeps cooling water flowing through the correct passages and prevents leaks or loss of pump pressure that can lead to overheating. Each package contains 2 gaskets, so buyers replacing a full water pump kit or servicing multiple units have enough material on hand without ordering twice.\u003c\/p\u003e\u003cp\u003eWear plate gaskets are a wear item that should be replaced any time the water pump housing is removed for service, since a reused or hardened gasket will not seal properly against the wear plate and can allow water to bypass the impeller housing. Installing a fresh 18-2709-9 gasket during every water pump rebuild helps maintain proper cooling system pressure and reduces the risk of a repeat teardown. The gasket is sized specifically for V-4\/V-6 Mercury outboard water pump assemblies and directly replaces Mercury part number 336530.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2709-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Wear Plate Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Pack of 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e V-4\/V-6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282163150\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eV-4\/V-6 Mercury outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury 336530\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the 18-2709-9 wear plate gasket fit?\u003c\/strong\u003e The 18-2709-9 wear plate gasket is designed for V-4\/V-6 Mercury outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this gasket cross-reference to an OEM Mercury part number?\u003c\/strong\u003e Yes, Sierra 18-2709-9 replaces Mercury part number 336530.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in one package of 18-2709-9?\u003c\/strong\u003e Each package of the 18-2709-9 wear plate gasket contains 2 gaskets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2709-9 wear plate gasket weigh?\u003c\/strong\u003e The Sierra 18-2709-9 wear plate gasket weighs 0.02 pounds per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the wear plate gasket be replaced?\u003c\/strong\u003e Any time the water pump housing is removed for service on a V-4\/V-6 Mercury outboard, the 18-2709-9 wear plate gasket should be replaced rather than reused, since a worn gasket will not seal properly against the wear plate.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this an aftermarket or genuine Mercury part?\u003c\/strong\u003e Sierra 18-2709-9 is an aftermarket gasket manufactured to replace Mercury OEM part 336530, offering the same fit and seal at the wear plate location.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the wear plate gasket seal against?\u003c\/strong\u003e It seals the wear plate against the water pump housing, maintaining proper cooling water flow through the lower unit on V-4\/V-6 Mercury outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I buy just one gasket instead of the 2-pack?\u003c\/strong\u003e The 18-2709-9 wear plate gasket is sold only in a package of 2, which is enough for a full water pump service or two separate repairs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does a worn or reused gasket cause overheating?\u003c\/strong\u003e If the wear plate gasket does not seal completely, water can bypass the impeller housing and reduce pump pressure, which can lead to overheating in the V-4\/V-6 Mercury outboard cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a UPC code available for this gasket for retail tracking?\u003c\/strong\u003e Yes, the Sierra 18-2709-9 wear plate gasket package carries UPC 808282163150.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988109209819,"sku":"SIE-18-2709-9","price":3.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/sierra_lg_1206__66188.1558125519.500.750.jpg?v=1785329193"},{"product_id":"sierra-18-2823-9-lower-water-pump-gasket-2-pack-replaces-mercury-27-19553-27-32769-fits-mercruiser-4-6-cyl-mercury-40-50-70-hp","title":"Sierra 18-2823-9 Lower Water Pump Gasket, Replaces 27-32769\/27-19553, Fits 40-50-70 HP Mercury Marine\/Mercruiser, Pack of 2","description":"\u003cp\u003eThe Sierra 18-2823-9 is a lower water pump gasket sold in a package of two, designed to seal the lower section of the water pump housing on 40-50-70 HP Mercury Marine and Mercruiser stern drive engines. This gasket sits between the water pump base and the lower housing, forming the seal that keeps raw cooling water flowing through the correct passages and prevents leaks at the pump base during operation. Because water pump gaskets harden, compress, and lose their seal over time, replacing this gasket is a standard step whenever the water pump is serviced, rebuilt, or has its impeller replaced.\u003c\/p\u003e\u003cp\u003eEach package includes two gaskets, so a single purchase covers a complete water pump service without needing a second order. The 18-2823-9 is built to the same fit and seal performance as the original equipment gasket it replaces, cross-referencing directly to OEM part numbers 27-32769 and 27-19553. Installing the correct lower water pump gasket helps maintain proper cooling system pressure and prevents water intrusion or leakage at the pump housing, which can otherwise lead to overheating or reduced water pump performance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2823-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Lower Water Pump Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 2 gaskets per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHP Rating:\u003c\/strong\u003e 40-50-70 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mercury Marine and Mercruiser stern drive engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 27-32769, 27-19553\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282163303\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e40-50-70 HP Mercury Marine and Mercruiser stern drive engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e27-32769\u003c\/li\u003e\n\u003cli\u003e27-19553\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2823-9 gasket fit?\u003c\/strong\u003e The 18-2823-9 lower water pump gasket fits 40-50-70 HP Mercury Marine and Mercruiser stern drive engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package of 18-2823-9?\u003c\/strong\u003e Each package of the 18-2823-9 contains 2 lower water pump gaskets, enough for one complete water pump service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2823-9 gasket a direct OEM replacement?\u003c\/strong\u003e Yes, the 18-2823-9 is built to seal and fit the same as the original equipment gasket it replaces, matching OEM part numbers 27-32769 and 27-19553.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-2823-9 replace?\u003c\/strong\u003e The Sierra 18-2823-9 replaces OEM numbers 27-32769 and 27-19553.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere on the water pump does this gasket install?\u003c\/strong\u003e This gasket seals the lower section of the water pump housing, sitting between the pump base and the lower housing on the engine's water pump assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the lower water pump gasket?\u003c\/strong\u003e Replace the 18-2823-9 lower water pump gasket any time the water pump is serviced, rebuilt, or the impeller is replaced, since the old gasket can harden and lose its seal over time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat happens if I reuse the old gasket instead of installing a new 18-2823-9?\u003c\/strong\u003e A worn or hardened lower water pump gasket can leak at the pump base, allowing water intrusion or loss of cooling water pressure, so Sierra recommends installing a fresh 18-2823-9 during pump service rather than reusing the old gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2823-9 gasket weigh?\u003c\/strong\u003e The Sierra 18-2823-9 lower water pump gasket package weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2823-9 come with the impeller?\u003c\/strong\u003e No, the 18-2823-9 is the lower water pump gasket only, sold as a pack of 2; the impeller and impeller gasket are separate parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2823-9 gasket engine-specific by horsepower?\u003c\/strong\u003e Yes, the 18-2823-9 is designed for the 40-50-70 HP range of Mercury Marine and Mercruiser stern drive engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988129984731,"sku":"SIE-18-2823-9","price":4.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-2823-9__89603.1737854809.500.750.jpg?v=1785188268"},{"product_id":"sierra-18-2824-9-upper-water-pump-gasket-2-pack-for-mercury-40-50-70-hp-outboards-replaces-27-32771","title":"Sierra 18-2824-9 Upper Water Pump Gasket, Pack of 2, Replaces 27-32770, 27-19551","description":"\u003cp\u003eThe Sierra 18-2824-9 is an upper water pump gasket for Mercury marine applications, sold in a pack of 2. This gasket seals the upper section of the water pump housing to prevent leaks and maintain proper cooling water flow through the pump assembly. It is made of glass material, measures 0.25 inches thick, and is finished in black. Each Sierra gasket is manufactured to meet or exceed the specifications of the original equipment part it replaces, making it a reliable choice when servicing or rebuilding a water pump. Because gaskets degrade with heat cycling and age, replacing the upper water pump gasket during any water pump service or impeller replacement helps ensure a proper seal and prevents coolant water leaks. This listing includes two gaskets per package, so a spare is on hand for future service or for pumps requiring more than one gasket.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2824-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Upper Water Pump Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 2 gaskets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Thickness:\u003c\/strong\u003e 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282163310\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury marine applications\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e27-32770\u003c\/li\u003e\n\u003cli\u003e27-19551\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2824-9 gasket fit?\u003c\/strong\u003e The Sierra 18-2824-9 upper water pump gasket is designed for Mercury marine applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in this package?\u003c\/strong\u003e This package includes 2 gaskets, as the Sierra 18-2824-9 is sold in a pack of 2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-2824-9 replace?\u003c\/strong\u003e It replaces Mercury OEM numbers 27-32770 and 27-19551.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the gasket made from?\u003c\/strong\u003e Glass is the material used for the Sierra 18-2824-9 upper water pump gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow thick is the gasket?\u003c\/strong\u003e 0.25 inches is the thickness of the Sierra 18-2824-9 gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2824-9 gasket?\u003c\/strong\u003e Black is the color of this gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the gasket weigh?\u003c\/strong\u003e The Sierra 18-2824-9 upper water pump gasket weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-2824-9 is a Sierra-branded gasket manufactured to meet or exceed the specifications of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the upper water pump gasket be replaced?\u003c\/strong\u003e Replacing the upper water pump gasket is recommended during water pump service or impeller replacement to ensure a proper seal and prevent coolant water leaks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a lower water pump gasket available separately?\u003c\/strong\u003e Yes, the upper water pump gasket (18-2824-9) is a distinct part from a lower water pump gasket, so buyers should confirm which position they need before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2824-9?\u003c\/strong\u003e The UPC for this pack of 2 upper water pump gaskets is 808282163310.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988130083035,"sku":"SIE-18-2824-9","price":3.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2824-9__48151.1737896784.500.750.jpg?v=1785188602"},{"product_id":"water-pump-gasket-for-mercruiser-stern-drive-mercury-marine-replaces-27-856081-27-8m0090319-pack-of-2-sierra-18-2914-9","title":"Sierra Water Pump Gasket 18-2914-9, Replaces 27-856081, 27-32433, Pack of 2","description":"\u003cp\u003eThe Sierra 18-2914-9 Water Pump Gasket is a replacement gasket used in most lower units and sea water pumps on Mercruiser stern drive and Mercury marine applications. It seals the water pump housing to prevent leaks and maintain proper cooling water flow through the lower unit or sea water pump assembly, helping protect the engine from overheating caused by a failed or hardened factory gasket.\u003c\/p\u003e\u003cp\u003eEach package contains 2 gaskets, so you have a spare on hand or enough for a job requiring more than one seal. This gasket is a direct cross-reference to the OEM Mercury Marine and Mercruiser Stern Drive numbers listed below, so it fits in place of the original equipment part without modification. Sierra manufactures this gasket to meet or exceed the specifications of the original equipment part it replaces, making it a reliable choice for routine water pump maintenance or rebuild kits.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2914-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 2 gaskets per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Product Code:\u003c\/strong\u003e 808282164164\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUsed in most lower units and sea water pumps\u003c\/li\u003e\n\u003cli\u003eMercruiser stern drive applications\u003c\/li\u003e\n\u003cli\u003eMercury marine applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e27-856081\u003c\/li\u003e\n\u003cli\u003e27-85608\u003c\/li\u003e\n\u003cli\u003e27-32433\u003c\/li\u003e\n\u003cli\u003e27-30603\u003c\/li\u003e\n\u003cli\u003e27-8M0090319\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2914-9 gasket fit?\u003c\/strong\u003e The 18-2914-9 gasket is used in most lower units and sea water pumps on Mercruiser stern drive and Mercury marine applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package?\u003c\/strong\u003e Part number 18-2914-9 is sold in a package of 2 gaskets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2914-9 gasket the same as the OEM Mercury Marine gasket?\u003c\/strong\u003e Yes, it directly replaces OEM Mercury Marine and Mercruiser Stern Drive numbers 27-856081, 27-85608, 27-32433, 27-30603, and 27-8M0090319.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does 18-2914-9 cross-reference to?\u003c\/strong\u003e It replaces 27-856081, 27-85608, 27-32433, 27-30603, and 27-8M0090319.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-2914-9 gasket made of?\u003c\/strong\u003e This gasket is made of plastic.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2914-9 gasket weigh?\u003c\/strong\u003e Each package of the 18-2914-9 gasket weighs 0.04 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is this gasket installed on a sea water pump?\u003c\/strong\u003e The 18-2914-9 gasket seals the water pump housing to prevent leaks and maintain proper cooling water flow through the lower unit or sea water pump assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this an authentic Sierra part or an aftermarket copy?\u003c\/strong\u003e Part number 18-2914-9 is a genuine Sierra product, manufactured to meet or exceed the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-2914-9 gasket for a water pump rebuild kit?\u003c\/strong\u003e Yes, since it comes 2 per package, the 18-2914-9 gasket works well for routine water pump maintenance or as part of a rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2914-9 gasket?\u003c\/strong\u003e The Sierra 18-2914-9 Water Pump Gasket has UPC 808282164164.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988133130459,"sku":"SIE-18-2914-9","price":4.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Sierra_18-2914-9_Water_Pump_Gasket_Priced_Per_Pkg_Of_2__59038.1722507215.500.750.jpg?v=1785188239"},{"product_id":"sierra-18-2915-9-water-pump-gasket-pack-of-2-replaces-mercruiser-mercury-27-856091-fits-mercruiser-stern-drive-mercury-marine","title":"Sierra 18-2915-9 Water Pump Gasket, Replaces 27-856091, Mercruiser Stern Drive and Mercury Marine, Pack of 2","description":"\u003cp\u003eThe Sierra 18-2915-9 Water Pump Gasket is a direct-fit replacement gasket engineered for Mercruiser stern drive and Mercury marine water pump applications. Each package contains two gaskets, giving boat owners enough material on hand to complete a full water pump service or keep a spare ready for the next maintenance interval. The gasket seals the water pump housing to prevent coolant and raw water leaks, helping the cooling system maintain proper pressure and flow to protect the engine from overheating.\u003c\/p\u003e\u003cp\u003eSierra manufactures this gasket to meet or exceed the specifications of the original equipment part it replaces, making it a reliable choice for routine water pump rebuilds and repairs. It is designed as a direct cross-reference to several Mercruiser and Mercury Marine OEM part numbers, so it fits into the same service procedures without modification. Because it ships as a pack of two, it is priced and packaged for a complete water pump gasket replacement job.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2915-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Pack of 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Thermostats \u0026amp; Gaskets\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercruiser stern drive applications\u003c\/li\u003e\n\u003cli\u003eMercury marine applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e27-856091\u003c\/li\u003e\n\u003cli\u003e27-858524\u003c\/li\u003e\n\u003cli\u003e27-85609\u003c\/li\u003e\n\u003cli\u003e27-32434\u003c\/li\u003e\n\u003cli\u003e27-30604\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2915-9 Water Pump Gasket fit?\u003c\/strong\u003e The 18-2915-9 gasket is designed for use in Mercruiser stern drive and Mercury marine water pump applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a package?\u003c\/strong\u003e Each package of the 18-2915-9 includes two water pump gaskets, enough for a complete water pump gasket replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does the 18-2915-9 replace?\u003c\/strong\u003e It replaces OEM numbers 27-856091, 27-858524, 27-85609, 27-32434, and 27-30604.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2915-9 an OEM part or an aftermarket replacement?\u003c\/strong\u003e It is an aftermarket Sierra replacement gasket that Sierra manufactures to meet or exceed the specifications of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2915-9 gasket weigh?\u003c\/strong\u003e The 18-2915-9 Water Pump Gasket, per package of two, weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this gasket be used for a Mercury outboard water pump?\u003c\/strong\u003e The 18-2915-9 falls under Sierra's Mercury Outboard Thermostats \u0026amp; Gaskets category and is designed for Mercruiser stern drive and Mercury marine water pump applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2915-9 replace 27-32434?\u003c\/strong\u003e Yes, 27-32434 is one of the OEM part numbers that the Sierra 18-2915-9 gasket replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2915-9 gasket sold individually or as a pair?\u003c\/strong\u003e It is sold priced per package of two, not individually.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the correct part number to order for this gasket?\u003c\/strong\u003e The correct Sierra part number to order is 18-2915-9, the Water Pump Gasket packaged in a set of two.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the 18-2915-9 water pump gasket be replaced?\u003c\/strong\u003e This gasket should be replaced any time the water pump housing is removed for service, since reusing a worn gasket can lead to coolant or raw water leaks at the pump housing.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988133163227,"sku":"SIE-18-2915-9","price":4.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2915-9__22225.1724327919.500.750.jpg?v=1785188214"},{"product_id":"water-pump-gasket-for-mercury-outboards-replaces-oem-27-42631-1-sierra-18-2919","title":"Sierra Water Pump Gasket 18-2919 - Replaces 27-426311, 27-42631","description":"\u003cp\u003eThe Sierra 18-2919 Water Pump Gasket is a replacement gasket engineered to seal the water pump housing on applicable outboard engines, restoring proper compression and preventing leaks at the pump base. It is designed as a direct fit for water pump assemblies that call for OEM 27-426311 or 27-42631 gaskets, giving installers a reliable seal without the delays of sourcing original equipment. Because a worn or torn water pump gasket is a common cause of reduced cooling pressure and pump leakage, replacing this gasket during any water pump service or impeller change helps ensure the housing seats correctly and the cooling system holds pressure as intended. This is a lightweight, single-use sealing component intended to be installed fresh any time the water pump housing is removed or serviced, rather than reused. Keeping a gasket like this on hand alongside an impeller kit is standard practice for a complete water pump rebuild, since reusing an old gasket after the housing has been disturbed increases the risk of a leak path forming at the mating surface. The Sierra 18-2919 is manufactured to the dimensions and material spec needed to match the original gasket it replaces, so it installs in the same location using the same fasteners as the factory part.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2919\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Water Pump Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999314239\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits water pump housings that use the 27-426311 or 27-42631 gasket.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e27-426311\u003c\/li\u003e\n\u003cli\u003e27-42631\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2919 gasket fit?\u003c\/strong\u003e The Sierra 18-2919 is a water pump gasket designed to fit water pump housings that call for OEM gasket 27-426311 or 27-42631.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-2919 the same as OEM part 27-426311?\u003c\/strong\u003e Yes, the Sierra 18-2919 water pump gasket is a direct replacement for OEM 27-426311, and it also replaces OEM 27-42631.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-2919 gasket made for?\u003c\/strong\u003e It is a water pump housing gasket, used to seal the mating surface of an outboard water pump during installation or service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2919 water pump gasket weigh?\u003c\/strong\u003e The Sierra 18-2919 weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace the water pump gasket every time I service the pump?\u003c\/strong\u003e Yes, a water pump gasket such as the Sierra 18-2919 is a single-use sealing part and should be replaced any time the water pump housing is removed, rather than reinstalling the old gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2919 gasket come with the impeller?\u003c\/strong\u003e No, the Sierra 18-2919 is sold as a standalone gasket and does not include an impeller or other water pump kit components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2919 gasket genuine Sierra or aftermarket?\u003c\/strong\u003e The 18-2919 is a Sierra-branded gasket manufactured as a replacement part carrying the Sierra part number 18-2919.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM numbers cross-reference to the Sierra 18-2919?\u003c\/strong\u003e The Sierra 18-2919 water pump gasket cross-references to OEM numbers 27-426311 and 27-42631.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I reuse my old water pump gasket instead of buying the 18-2919?\u003c\/strong\u003e Reusing an old water pump gasket after the housing has been disturbed increases the risk of a leak, so replacing it with a fresh gasket like the Sierra 18-2919 during service is recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2919 gasket?\u003c\/strong\u003e The UPC for the Sierra 18-2919 water pump gasket is 030999314239.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988133359835,"sku":"SIE-18-2919","price":0.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2919_lg__47379.1558125510.500.750.jpg?v=1785188727"},{"product_id":"sierra-18-30005-ballast-impeller-kit-for-marine-ballast-systems","title":"Sierra Ballast Impeller Kit 18-30005","description":"\u003cp\u003eThe Sierra Ballast Impeller Kit, part number 18-30005, is a replacement impeller kit designed for marine ballast pump service. It provides a direct kit solution for boat owners who need to restore proper pump function on their ballast system. The compact kit ships ready to install and is sized for easy handling and storage aboard.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-30005\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Ballast Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Engine Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 4 x 4 x 2 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-30005 impeller kit used for?\u003c\/strong\u003e Part number 18-30005 is a Sierra Ballast Impeller Kit used to replace the impeller in a marine ballast pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-30005 Ballast Impeller Kit weigh?\u003c\/strong\u003e The Sierra Ballast Impeller Kit, 18-30005, weighs 0.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-30005 kit?\u003c\/strong\u003e The Sierra Ballast Impeller Kit 18-30005 ships in a package measuring 4 x 4 x 2 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-30005 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-30005 is the Sierra manufacturer part number for this Ballast Impeller Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of part is 18-30005?\u003c\/strong\u003e The Sierra 18-30005 kit is classified as an engine part, specifically a ballast pump impeller kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-30005 kit include everything needed to replace the impeller?\u003c\/strong\u003e The Sierra 18-30005 is sold as a complete Ballast Impeller Kit, packaged as a single unit for the replacement job.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use part number 18-30005 for engine cooling pump service?\u003c\/strong\u003e No, 18-30005 is designated by Sierra specifically as a Ballast Impeller Kit, not a general engine cooling pump impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the Sierra 18-30005 Ballast Impeller Kit packaged?\u003c\/strong\u003e It ships in compact packaging measuring 4 x 4 x 2 inches and weighing 0.06 pounds.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136046811,"sku":"SIE-18-30005","price":17.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-30005__65311.1739477161.500.750.jpg?v=1785188156"},{"product_id":"sierra-18-30006-ballast-impeller-kit-for-marine-ballast-pumps","title":"Sierra Ballast Impeller Kit 18-30006","description":"\u003cp\u003eThe Sierra Ballast Impeller Kit, part number 18-30006, is a replacement impeller kit designed for ballast pump systems on boats. Ballast pumps rely on a flexible impeller to move water into and out of ballast tanks, and this kit provides the components needed to service that pump when the impeller wears out or loses pumping efficiency. Keeping the ballast pump impeller in good condition helps ensure consistent fill and empty cycles for the ballast system, which is important for boat trim and stability. The kit ships as a compact, self-contained unit that is easy to store aboard as a spare part. As with any impeller service, replacing the impeller before it fails helps prevent debris from a disintegrated impeller from circulating through the pump housing and plumbing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-30006\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Ballast Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.6 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 4 x 4 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282388348\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-30006 Ballast Impeller Kit used for?\u003c\/strong\u003e It is a replacement impeller kit for a boat's ballast pump, supplying the impeller and related components needed to service the pump when it stops moving water efficiently.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra Ballast Impeller Kit 18-30006 weigh?\u003c\/strong\u003e It weighs 0.6 pounds, making it a lightweight, easy-to-store spare part to keep on board.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of part number 18-30006?\u003c\/strong\u003e The Sierra Ballast Impeller Kit ships in a package measuring 4 x 4 x 2 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-30006 a genuine Sierra part number?\u003c\/strong\u003e Yes, 18-30006 is the Sierra manufacturer part number for this Ballast Impeller Kit, so it is a genuine Sierra product rather than a generic substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I identify the correct impeller kit for my ballast pump?\u003c\/strong\u003e Match the part number on your existing ballast pump impeller kit to 18-30006 before ordering, since impeller kits are pump-specific and the wrong kit will not fit correctly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the box with the 18-30006 kit?\u003c\/strong\u003e The Sierra 18-30006 kit is sold as a Ballast Impeller Kit, providing the impeller components needed for a ballast pump service in one package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I find the UPC for this Sierra impeller kit?\u003c\/strong\u003e Yes, the Sierra Ballast Impeller Kit 18-30006 carries UPC 808282388348.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does a ballast pump impeller need to be replaced?\u003c\/strong\u003e Over time an impeller's flexible vanes wear down and lose their seal, reducing the pump's ability to fill or empty ballast tanks efficiently, which is when a kit like the Sierra 18-30006 is used to restore performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace the impeller before it fails completely?\u003c\/strong\u003e Proactively replacing a worn impeller with the Sierra 18-30006 kit helps avoid a situation where a disintegrated impeller sheds pieces into the pump housing and plumbing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-30006 kit compact enough to carry as a spare?\u003c\/strong\u003e At 0.6 pounds and packaged in a 4 x 4 x 2 inch box, the Sierra Ballast Impeller Kit is compact enough to keep on board as a spare part.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136112347,"sku":"SIE-18-30006","price":17.31,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-30006__53662.1739477160.500.750.jpg?v=1785188304"},{"product_id":"sierra-18-30007-ballast-impeller-kit-for-marine-ballast-pumps","title":"Sierra Ballast Impeller Kit 18-30007 for Johnson Outboard Engines","description":"\u003cp\u003eThe Sierra Ballast Impeller Kit, part number 18-30007, is a replacement impeller kit designed for Johnson outboard engines. It is supplied as a single kit and is built to restore proper pumping function in the ballast system it serves. The kit is compact and lightweight, making it easy to keep on hand as a spare for scheduled maintenance or as a replacement when an existing impeller has worn out or failed.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-30007\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Ballast Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Johnson Outboard Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.11 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 4 x 4 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282388355\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Johnson outboard engines.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is Sierra part number 18-30007?\u003c\/strong\u003e Sierra 18-30007 is a Ballast Impeller Kit, a replacement impeller kit designed for Johnson outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in this kit?\u003c\/strong\u003e The Sierra 18-30007 Ballast Impeller Kit is supplied as one kit per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the packaging for this impeller kit?\u003c\/strong\u003e The Sierra Ballast Impeller Kit 18-30007 ships in packaging measuring 4 x 4 x 2 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-30007 impeller kit weigh?\u003c\/strong\u003e It weighs 0.11 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the Sierra 18-30007 compatible with?\u003c\/strong\u003e This ballast impeller kit is designed for Johnson outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-30007 the correct part number to search for this kit?\u003c\/strong\u003e Yes, 18-30007 is the manufacturer part number for this Sierra Ballast Impeller Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part?\u003c\/strong\u003e Yes, the Ballast Impeller Kit 18-30007 is manufactured under the Sierra brand.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra Ballast Impeller Kit?\u003c\/strong\u003e The UPC for Sierra part number 18-30007 is 808282388355.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat system does this impeller kit serve on a Johnson outboard?\u003c\/strong\u003e The Sierra 18-30007 is a ballast impeller kit, intended for use in the ballast system of a Johnson outboard-equipped boat.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136145115,"sku":"SIE-18-30007","price":17.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-30007__54983.1739477160.500.750.jpg?v=1785188157"},{"product_id":"sierra-18-30008-ballast-impeller-kit-replacement-impeller-for-marine-ballast-pumps","title":"Sierra Ballast Impeller Kit 18-30008 for Johnson Outboard Cooling Systems","description":"\u003cp\u003eThe Sierra Ballast Impeller Kit, part number 18-30008, is a replacement impeller kit built for the cooling system on Johnson outboard motors. The impeller is the core wear component inside a water pump housing, drawing raw water through the cooling passages to keep the powerhead running at safe operating temperature. Over time, impeller vanes lose flexibility and can crack or shear, leading to reduced water flow and overheating, so replacing the impeller kit is a routine maintenance item for outboard owners who service their own cooling systems.\u003c\/p\u003e\u003cp\u003eThis kit ships as a compact, ready-to-install unit sized for easy handling and storage aboard the boat or in a service kit. Because it is a genuine Sierra part, it is manufactured to match the fit and function expected for the Johnson outboard cooling system application it is designed for, giving owners a straightforward like-for-like replacement option when performing cooling system maintenance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-30008\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Ballast Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Johnson Outboard Cooling System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282388362\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 4 x 4 x 2 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-30008 Ballast Impeller Kit used for?\u003c\/strong\u003e It is a replacement impeller kit for the cooling system on Johnson outboard motors, supplying the water pump with a new impeller to maintain proper raw water flow for engine cooling.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-30008 a genuine Sierra part number?\u003c\/strong\u003e Yes, 18-30008 is the Sierra manufacturer part number for the Ballast Impeller Kit, so it is a genuine Sierra replacement part rather than a generic substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-30008 impeller kit?\u003c\/strong\u003e The Sierra Ballast Impeller Kit 18-30008 has package dimensions of 4 x 4 x 2 inches, making it a compact part that is easy to store with onboard spares.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-30008 impeller kit weigh?\u003c\/strong\u003e This impeller kit weighs 0.06 pounds, reflecting its small, lightweight construction as a single water pump component kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit fit Johnson outboard motors?\u003c\/strong\u003e Yes, the Sierra 18-30008 Ballast Impeller Kit is categorized for the Johnson outboard cooling system, making it intended for use in that cooling system application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace an outboard impeller?\u003c\/strong\u003e An outboard impeller's rubber vanes wear down or crack over time, reducing water flow through the cooling system; the Sierra 18-30008 kit provides a replacement impeller to restore proper cooling performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-30008 Ballast Impeller Kit?\u003c\/strong\u003e The kit is sold as the Ballast Impeller Kit under Sierra part number 18-30008, providing the impeller component needed for the outboard cooling system service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I identify the correct impeller kit for my Johnson outboard?\u003c\/strong\u003e Confirm the part number 18-30008 matches your existing Sierra cooling system component before ordering, since this kit is specific to that part number and application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-30008 impeller kit a UPC-verified product?\u003c\/strong\u003e Yes, the Sierra Ballast Impeller Kit 18-30008 carries UPC 808282388362 for verified product identification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install this impeller kit myself?\u003c\/strong\u003e The Sierra 18-30008 Ballast Impeller Kit is designed as a standard replacement part for the water pump in the Johnson outboard cooling system, suitable for routine maintenance by owners comfortable servicing their outboard's cooling system.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136308955,"sku":"SIE-18-30008","price":17.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-30008__72645.1739477161.500.750.jpg?v=1785189158"},{"product_id":"sierra-18-3001-water-pump-impeller-for-evinrude-johnson-omc-outboards-replaces-omc-277181-434424","title":"Sierra 18-3001 Impeller, Replaces OMC 277181 and 434424","description":"\u003cp\u003eThe Sierra 18-3001 is a water pump impeller designed as a direct replacement for outboard cooling systems that originally used OMC 277181 or OMC 434424 impellers. The impeller is the core wear component inside a marine water pump housing: as it rotates, its flexible vanes draw raw water through the intake and push it through the engine's cooling passages to keep the powerhead running at a safe temperature. Because impeller vanes lose flexibility and can crack or shed material over time, especially after dry-running or extended storage, replacing this part on schedule is one of the most important preventive maintenance steps an outboard owner can perform. Neglecting a worn impeller is a common cause of overheating and expensive powerhead damage. The Sierra 18-3001 is sized and configured to install as a like-for-like swap for the original 277181\/434424 impeller, so it drops into the existing water pump housing without modification. It ships as a single impeller unit, ready to be installed during a routine water pump service or full water pump rebuild. Keeping a spare on board or in the shop is inexpensive insurance against a cooling system failure on the water.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 6.81 inches L x 5.98 inches W x 0.55 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.09 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999237118\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00030999237118\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits applications originally equipped with OMC impeller 277181 or 434424.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e277181\u003c\/li\u003e\n\u003cli\u003e434424\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3001 impeller replace?\u003c\/strong\u003e The Sierra 18-3001 is a direct replacement for OMC impeller numbers 277181 and 434424, so any application originally built around either of those part numbers accepts the 18-3001 as a drop-in swap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3001 an OEM part or an aftermarket equivalent?\u003c\/strong\u003e It is an aftermarket impeller manufactured to match the fit and function of the original OMC 277181 and 434424 impellers, sold under the Sierra part number 18-3001.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in one order of part number 18-3001?\u003c\/strong\u003e One order includes a single impeller; the package quantity for the 18-3001 is 1 unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-3001 impeller?\u003c\/strong\u003e The packaged 18-3001 measures 6.81 inches long by 5.98 inches wide by 0.55 inches high.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3001 impeller weigh?\u003c\/strong\u003e The 18-3001 impeller weighs 0.09 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the 18-3001 impeller be replaced?\u003c\/strong\u003e Impellers like the 18-3001 should be replaced as part of routine water pump maintenance, since the rubber vanes lose flexibility and can crack over time, particularly after dry-running or long storage periods; a worn impeller is a leading cause of engine overheating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I purchase the 18-3001?\u003c\/strong\u003e The 18-3001 ships as the impeller component only, ready to install into the existing water pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3001 impeller come with a warranty?\u003c\/strong\u003e Yes, the Sierra 18-3001 impeller is covered by a limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-3001 impeller for a full water pump rebuild?\u003c\/strong\u003e Yes, the 18-3001 is commonly installed during a water pump service or rebuild wherever the original impeller carried OMC part number 277181 or 434424.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3001 impeller?\u003c\/strong\u003e The Sierra 18-3001 impeller carries UPC 030999237118 and GTIN 00030999237118.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136341723,"sku":"SIE-18-3001","price":16.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3001_lg__59779.1558124825.500.750.jpg?v=1785188339"},{"product_id":"sierra-18-3002-water-pump-impeller-for-johnson-evinrude-omc-outboards-replaces-omc-375638-775518","title":"Sierra 18-3002 Impeller - Replaces OMC 375638 - Evinrude Outboard Water Pump","description":"\u003cp\u003eThe Sierra 18-3002 is a water pump impeller built as a direct replacement for the cooling system on Evinrude outboard motors. The impeller is the core wear component inside an outboard's water pump, drawing raw water through the lower unit and circulating it to cool the powerhead. Over time impeller vanes lose flexibility and wear down, reducing water flow and putting the engine at risk of overheating, so replacing the impeller on schedule or at the first sign of reduced water pressure is a routine part of outboard maintenance.\u003c\/p\u003e\u003cp\u003eThe Sierra 18-3002 is supplied as a single impeller (one item included) and is cross-referenced to OMC part number 375638, making it straightforward to identify as the correct replacement for engines that originally used that OEM part. It is categorized for Evinrude outboard water pump service and carries UPC 030999237125 for verification when ordering.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3002\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.08 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999237125\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Water Pumps and Impellers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 375638\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Evinrude outboard water pump applications.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e375638\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3002 impeller replace?\u003c\/strong\u003e The Sierra 18-3002 is cross-referenced to OMC part number 375638, so it is the correct replacement wherever that OEM number is called for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3002 a genuine Sierra part or a generic aftermarket copy?\u003c\/strong\u003e It is a Sierra-branded impeller, part number 18-3002, sold as a cataloged aftermarket replacement for the OMC 375638 impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3002 impeller weigh?\u003c\/strong\u003e The Sierra 18-3002 impeller weighs 0.08 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order part number 18-3002?\u003c\/strong\u003e Ordering Sierra 18-3002 gets you one impeller; the number of items included is 1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards is this impeller used on?\u003c\/strong\u003e The Sierra 18-3002 is listed under Evinrude outboard water pumps and impellers, for use in the water pump cooling system on applicable Evinrude outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow can I confirm I am ordering the right impeller?\u003c\/strong\u003e Sierra 18-3002 carries UPC 030999237125, which can be checked against your order or packaging to confirm it is the correct part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does an impeller like the 18-3002 actually do?\u003c\/strong\u003e It is the rotating vaned component inside the outboard's water pump that draws in raw water and pushes it through the engine to keep the powerhead cool.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the 18-3002 impeller be replaced?\u003c\/strong\u003e An impeller such as the Sierra 18-3002 should be replaced when water pump output drops or the impeller vanes show wear, since a worn impeller reduces cooling water flow to the engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-3002 come as just the impeller or with other water pump parts?\u003c\/strong\u003e Sierra 18-3002 is the impeller only, listed with included components of one impeller and a quantity of 1.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136472795,"sku":"SIE-18-3002","price":18.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3002_lg__91186.1558124886.500.750.jpg?v=1785188497"},{"product_id":"sierra-18-3003-water-pump-impeller-for-omc-johnson-evinrude-outboards-replaces-oem-377178-775519","title":"Sierra 18-3003 Impeller, Replaces OMC 377178, for Evinrude Outboard Water Pumps","description":"\u003cp\u003eThe Sierra 18-3003 is a water pump impeller built for Evinrude outboard water pump applications. The impeller is the component inside your outboard's water pump housing that draws raw water in and circulates it through the engine's cooling system, so a worn or cracked impeller is one of the most common causes of overheating on outboard motors. This impeller is black in color and is supplied as a single unit (quantity of 1) for use when rebuilding or servicing your outboard's water pump.\u003c\/p\u003e\u003cp\u003eBecause impellers wear out from normal use, dry-running, or age-related hardening of the material, replacing the impeller at recommended service intervals or at the first sign of reduced water flow helps protect the engine from overheating damage. The Sierra 18-3003 is manufactured as a direct cross-reference replacement for the original equipment part, making it a straightforward like-for-like swap during a water pump service.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3003\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Evinrude Outboard Water Pumps \u0026amp; Impellers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 3 x 3 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.09 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999314994\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e OMC 377178\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eEvinrude outboard water pump applications\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOMC 377178\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3003 impeller fit?\u003c\/strong\u003e The Sierra 18-3003 is designed for Evinrude outboard water pump applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-3003 replace?\u003c\/strong\u003e It cross-references to OMC part number 377178, so it is a direct replacement for that original equipment impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-3003 impeller?\u003c\/strong\u003e It is black.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3003 impeller weigh?\u003c\/strong\u003e This impeller weighs 0.09 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-3003?\u003c\/strong\u003e The impeller measures 3 x 3 x 1 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in the package?\u003c\/strong\u003e The Sierra 18-3003 is sold as a single impeller, quantity 1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3003 a genuine Sierra part?\u003c\/strong\u003e Yes, it is manufactured and sold under the Sierra brand as part number 18-3003.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace the impeller in my outboard's water pump?\u003c\/strong\u003e A worn, cracked, or hardened impeller reduces raw water flow through the cooling system, which can lead to engine overheating; the Sierra 18-3003 impeller is used to restore proper water pump function.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3003 impeller?\u003c\/strong\u003e The UPC for the Sierra 18-3003 impeller is 030999314994.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the Sierra 18-3003 be used as a direct swap for OMC 377178?\u003c\/strong\u003e Yes, Sierra 18-3003 is the cross-referenced replacement for OMC 377178.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136571099,"sku":"SIE-18-3003","price":17.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3003_lg__82396.1558124950.500.750.jpg?v=1785188498"},{"product_id":"sierra-18-3006-water-pump-impeller-for-johnson-evinrude-outboard-replaces-omc-378891-775521-6-fin-neoprene","title":"Sierra 18-3006 Neoprene Water Pump Impeller with 6 Fins - Johnson\/Evinrude 40 HP 1971-73","description":"\u003cp\u003eThe Sierra 18-3006 is a neoprene water pump impeller built for Johnson\/Evinrude outboard motors, specifically the 40 HP models from 1971-73. This impeller is the core wear component of the outboard's water pump, drawing raw water from the intake and pushing it through the cooling system to keep the powerhead running at a safe temperature. Made from neoprene, it is molded with 6 fins that flex and reseat against the pump housing as the drive shaft turns, creating the pumping action that circulates cooling water. Neoprene is chosen for this application because it resists the heat, fuel exposure, and constant flexing that a water pump impeller experiences in service, while holding its shape for a consistent seal against the pump housing.\u003c\/p\u003e\u003cp\u003eSierra engineers and manufactures this impeller to meet or exceed original equipment quality, so it installs and performs as a direct replacement in the applications listed. Replacing a worn or cracked impeller at recommended service intervals helps prevent overheating, which can otherwise lead to costly powerhead damage. This impeller is sold individually and is intended to be installed as part of a routine water pump service or rebuild.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3006\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Fins:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e OMC 378891, 775521\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 40 HP, 1971-73\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC 378891\u003c\/li\u003e\n\u003cli\u003eOMC 775521\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-3006 impeller fit?\u003c\/strong\u003e The 18-3006 is built for Johnson\/Evinrude outboard motors in the 40 HP application from 1971-73.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-3006 impeller made of?\u003c\/strong\u003e It is molded from neoprene, a material chosen for its resistance to heat and flexing inside a marine water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fins does this impeller have?\u003c\/strong\u003e The Sierra 18-3006 has 6 fins that create the pumping action drawing raw water through the outboard's cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3006 cross-reference to an OEM part number?\u003c\/strong\u003e Yes, it is equivalent to OMC 378891 and OMC 775521.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3006 an OEM part or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra-manufactured aftermarket impeller built to meet or exceed original equipment quality, not an OMC-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3006 impeller weigh?\u003c\/strong\u003e It weighs 0.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-3006 impeller?\u003c\/strong\u003e It is white, the natural color of the neoprene compound it is molded from.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-3006 be used on any Johnson\/Evinrude outboard?\u003c\/strong\u003e No, fitment is specific to the 40 HP 1971-73 application; buyers should confirm their engine model and year before ordering since Sierra lists different impeller part numbers for other years and horsepower ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow often should a water pump impeller like the 18-3006 be replaced?\u003c\/strong\u003e A neoprene impeller such as the 18-3006 is a wear item that should be replaced whenever it shows cracking, worn fins, or reduced water flow, or as part of routine water pump service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat happens if I run my outboard with a worn 18-3006 impeller?\u003c\/strong\u003e A worn impeller reduces raw water flow through the cooling system, which can cause the outboard to overheat and potentially damage the powerhead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3006 come with the water pump housing or gaskets?\u003c\/strong\u003e No, the 18-3006 is the neoprene impeller only.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136603867,"sku":"SIE-18-3006","price":22.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3006_lg__62129.1558125018.500.750.jpg?v=1785188759"},{"product_id":"sierra-18-3012-water-pump-impeller-for-mercury-mariner-outboards-replaces-47-56780-47-65958-47-89982","title":"Sierra 18-3012 Neoprene Impeller, Replaces Mercury 47-22748, for Mercury\/Mariner Outboard Motors","description":"\u003cp\u003eThe Sierra 18-3012 is a marine neoprene water pump impeller built for Mercury and Mariner outboard motors. The impeller drives raw water through the outboard's cooling system, and its molded neoprene body with 6 flexible fins is formulated to withstand the heat and constant flexing that occur inside a marine water pump housing while circulating water to cool the engine. Neoprene is the standard material for outboard impellers because it holds its shape and seal against the pump housing wall even after repeated dry-start exposure, helping maintain consistent water flow to the powerhead.\u003c\/p\u003e\u003cp\u003eEach package includes one impeller, ready to install as a direct replacement during routine water pump maintenance or when an impeller has worn, cracked, or lost fins. Sierra states that every Sierra part meets or exceeds the original equipment part it replaces, giving outboard owners a maintenance part built to the same performance standard as the factory impeller. This impeller is designed specifically for Mercury and Mariner outboard engines and is sold under the Sierra brand, a recognized supplier of marine engine parts.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3012\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Fins:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine Type:\u003c\/strong\u003e 4 Stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999237132\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1 impeller per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited Warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 47-22748\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Mercury and Mariner outboard motors.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003e47-22748\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3012 impeller fit?\u003c\/strong\u003e The Sierra 18-3012 is designed for Mercury and Mariner outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-3012 replace?\u003c\/strong\u003e The Sierra 18-3012 replaces Mercury Marine part number 47-22748.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3012 impeller made from?\u003c\/strong\u003e It is made from neoprene, a flexible rubber compound formulated to hold its shape and seal against the water pump housing under the heat and friction of engine operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fins does the 18-3012 impeller have?\u003c\/strong\u003e The Sierra 18-3012 has 6 fins.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in one package?\u003c\/strong\u003e One Sierra 18-3012 impeller is included per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3012 impeller weigh?\u003c\/strong\u003e The Sierra 18-3012 weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3012 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-3012 is a Sierra-brand aftermarket impeller manufactured to meet or exceed the performance of the original Mercury 47-22748 equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this impeller be replaced?\u003c\/strong\u003e The 18-3012 should be installed when a Mercury or Mariner outboard's water pump impeller shows worn, cracked, or missing fins, or as part of routine water pump maintenance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-3012 impeller?\u003c\/strong\u003e The Sierra 18-3012 impeller is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3012 come with installation hardware like a gasket or housing?\u003c\/strong\u003e The package includes only the impeller itself, with one unit per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3012 impeller?\u003c\/strong\u003e The UPC for the Sierra 18-3012 impeller is 030999237132.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136669403,"sku":"SIE-18-3012","price":23.82,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3012_lg__93407.1558125276.500.750.jpg?v=1785188269"},{"product_id":"sierra-18-3016-1-brass-sea-water-pump-impeller-kit-with-gasket-replaces-47-862232a2-8m0104229-fits-late-model-mercruiser-bravo-high-performance-350-mag-4-3l-496-mag-5-0l-8-1s-mx-6-2l","title":"Sierra Impeller Kit 18-3016-1 for MerCruiser Bravo and Inboard Brass Sea Water Pumps","description":"\u003cp\u003eThe Sierra 18-3016-1 Impeller Kit is a brass, round-profile impeller kit built to restore water flow in MerCruiser brass sea water pumps. It is designed for Bravo and inboard drives fitted with a brass pump body, covering units with serial number 0M100001 and above, as well as MCM 45L MPI and 2000 and newer MCM V-6 and V-8 (305, 350 and 496 cid) engines equipped with the brass sea water pump. The impeller is the wear component inside the raw water pump that circulates cooling water through the engine, and it should be replaced on a regular service interval or whenever cooling performance drops, since a worn or cracked impeller can lead to overheating.\u003c\/p\u003e\u003cp\u003eThis kit includes the impeller along with the matching gasket needed for the reinstall, so the pump housing can be resealed properly during the service. The brass construction and round shape match the original equipment brass pump design, making this a straightforward, direct-fit service part rather than a full pump housing replacement. Sierra manufactures this part to meet or exceed the performance of the original equipment component it replaces, and it is built for the demands of marine cooling systems.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3016-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Impeller and gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.27 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282199937\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser Bravo and inboard engines with a brass pump body, serial number 0M100001 and above\u003c\/li\u003e\n\u003cli\u003eMerCruiser MCM 45L MPI\u003c\/li\u003e\n\u003cli\u003e2000 and newer MerCruiser V-6 and V-8 (305, 350 and 496 cid) engines equipped with the brass sea water pump\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-3016-1 impeller kit fit?\u003c\/strong\u003e The 18-3016-1 kit fits MerCruiser Bravo and inboard drives equipped with a brass pump body, serial number 0M100001 and above, as well as MCM 45L MPI and 2000 and newer MCM V-6 and V-8 (305, 350 and 496 cid) engines that use the brass sea water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include a gasket?\u003c\/strong\u003e Yes, the Sierra 18-3016-1 Impeller Kit includes the impeller along with the matching gasket needed to reseal the pump housing during installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3016-1 impeller made from?\u003c\/strong\u003e This is a brass impeller kit, with a round-shaped impeller matching the original equipment brass pump design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3016-1 impeller kit weigh?\u003c\/strong\u003e The Sierra 18-3016-1 Impeller Kit weighs 0.27 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this impeller work on a plastic pump body?\u003c\/strong\u003e No. The 18-3016-1 is designated for brass pump body applications; MerCruiser units with a plastic pump body use a different Sierra part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3016-1 a genuine Sierra part or aftermarket equivalent?\u003c\/strong\u003e It is a genuine Sierra part, manufactured to meet or exceed the performance of the original equipment sea water pump impeller it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my MerCruiser has the brass sea water pump this kit is designed for?\u003c\/strong\u003e The 18-3016-1 impeller kit is intended for MerCruiser Bravo and inboard engines with a brass pump body, serial number 0M100001 and above; checking your engine's serial number and pump body material will confirm compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-3016-1 kit?\u003c\/strong\u003e The kit contains one brass, round impeller and the corresponding gasket for reinstallation on the sea water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3016-1 fit the MCM 45L MPI engine?\u003c\/strong\u003e Yes, the Sierra 18-3016-1 Impeller Kit is listed as fitting the MCM 45L MPI engine along with 2000 and newer MCM V-6 and V-8 (305, 350 and 496 cid) engines using the brass sea water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the impeller in a MerCruiser sea water pump be replaced?\u003c\/strong\u003e The impeller is a wear item inside the sea water pump, and the 18-3016-1 kit is used to replace it during routine service or when reduced cooling water flow is noticed, since a worn impeller can contribute to engine overheating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3016-1 a complete water pump or just the impeller?\u003c\/strong\u003e The 18-3016-1 is an impeller kit consisting of the impeller and gasket, not a full water pump housing assembly.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136702171,"sku":"SIE-18-3016-1","price":28.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__93426.1753200607.500.750.jpg?v=1785188638"},{"product_id":"sierra-18-3013-upper-water-pump-seal-replaces-mercury-mariner-26-821309-fits-25-30-40-45-50-hp-4-stroke-outboards-s-n-og760300-up","title":"Sierra 18-3013 Upper Water Pump Seal, Replaces 26-821309, Fits 25\/30\/40\/45\/50 HP 4-Stroke Outboards","description":"\u003cp\u003eThe Sierra 18-3013 is an upper water pump seal used to restore a tight, factory-spec seal in the water pump housing of covered outboard engines. As the pump wears, this upper seal is one of the first components to lose its sealing ability, allowing cooling water to bypass the pump and reducing water flow to the engine. Replacing it as part of a water pump rebuild helps maintain proper cooling water pressure and delivery.\u003c\/p\u003e\u003cp\u003ePart 18-3013 is a direct equivalent to OEM number 26-821309 and is designed specifically for 4-stroke outboards rated 25, 30, 40, 45, and 50 HP with serial number OG760300 and up. Because fitment is tied to that serial number range, confirm your engine's serial number before ordering to make sure this is the correct seal for your unit. At 0.02 pounds, it is a small, lightweight component intended to be installed alongside the other water pump wear parts (impeller, gaskets, and housing) during a routine pump rebuild.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3013\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Upper Water Pump Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 26-821309\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 4-Stroke Outboards, 25\/30\/40\/45\/50 HP, serial number OG760300 and up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282112851\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e4-Stroke Outboards, 25\/30\/40\/45\/50 HP, serial number OG760300 and up\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e26-821309\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-3013 seal replace?\u003c\/strong\u003e It replaces OEM number 26-821309. The Sierra 18-3013 upper water pump seal is a direct equivalent, so you can order it using either number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboard engines fit the 18-3013 upper water pump seal?\u003c\/strong\u003e This seal is designed for 4-stroke outboards rated 25, 30, 40, 45, and 50 HP with serial number OG760300 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the engine serial number matter when ordering this seal?\u003c\/strong\u003e Yes. The Sierra 18-3013 is fitted specifically to 4-stroke outboards with serial number OG760300 and up, so confirming your engine's serial number before ordering ensures correct fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3013 seal weigh?\u003c\/strong\u003e It weighs 0.02 pounds, making it a lightweight component of a water pump rebuild kit or standalone repair.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3013 a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-3013 is a Sierra-branded upper water pump seal, sold under Sierra's own part number and manufactured to their specification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the upper water pump seal actually do?\u003c\/strong\u003e In the water pump assembly, this seal keeps cooling water contained within the pump housing so it is delivered to the engine rather than leaking past worn components; the Sierra 18-3013 replaces this seal when it wears out.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-3013 fit outboards outside the 25-50 HP range?\u003c\/strong\u003e Fitment for the Sierra 18-3013 is specified for 25, 30, 40, 45, and 50 HP 4-stroke outboards with serial number OG760300 and up; it is not listed for other horsepower ratings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when you order part 18-3013?\u003c\/strong\u003e Ordering Sierra part 18-3013 gets you a single upper water pump seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there more than one cross-reference number for this seal?\u003c\/strong\u003e No, the Sierra 18-3013 upper water pump seal has one listed OEM cross-reference: 26-821309.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3013 seal?\u003c\/strong\u003e The UPC for the Sierra 18-3013 upper water pump seal is 808282112851.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136767707,"sku":"SIE-18-3013","price":1.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3013_lg__68533.1558125330.500.750.jpg?v=1785329145"},{"product_id":"water-pump-impeller-for-force-85-125-hp-outboards-replaces-47-803630t-f523065-sierra-18-3030","title":"Sierra 18-3030 Impeller for Chrysler\/Force 125 HP and 140 HP Outboards, Replaces 47-803630T, F523065","description":"\u003cp\u003eThe Sierra 18-3030 is a water pump impeller built for Chrysler\/Force outboard motors, designed to circulate cooling water through the engine and keep operating temperatures in check. The impeller features a machined exterior and is manufactured to meet or exceed original equipment quality, making it a reliable choice when rebuilding a water pump housing during routine maintenance or after a cooling system failure.\u003c\/p\u003e\u003cp\u003eThis impeller is engineered as a direct fit for Chrysler\/Force 125 HP outboards built from 1981 to 1989 (all models except model C for 1988, which uses this same part number separately) and 140 HP outboards built from 1978 to 1982. It is the correct replacement part for anyone rebuilding the lower unit water pump on these outboards, and it cross-references directly to the OEM Chrysler\/Force part numbers below, so it drops in without modification.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3030\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282167394\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.16 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 7 x 6 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 47-803630T, F523065-1, F523065, GLM 89450, 9-45001, 9-45001-10\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eChrysler\/Force 125 HP, 1981-1989, all models (except model C for 1988)\u003c\/li\u003e\n\u003cli\u003eChrysler\/Force 125 HP, 1988, model C\u003c\/li\u003e\n\u003cli\u003eChrysler\/Force 140 HP, 1978-1982, all models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e47-803630T\u003c\/li\u003e\n\u003cli\u003eF523065-1\u003c\/li\u003e\n\u003cli\u003eF523065\u003c\/li\u003e\n\u003cli\u003eGLM 89450\u003c\/li\u003e\n\u003cli\u003e9-45001\u003c\/li\u003e\n\u003cli\u003e9-45001-10\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards does the Sierra 18-3030 impeller fit?\u003c\/strong\u003e The 18-3030 fits Chrysler\/Force 125 HP outboards built from 1981 to 1989 on all models except model C for 1988, Chrysler\/Force 125 HP model C for 1988 specifically, and Chrysler\/Force 140 HP outboards built from 1978 to 1982.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3030 a direct OEM replacement?\u003c\/strong\u003e Yes, the Sierra 18-3030 cross-references directly to Chrysler\/Force OEM numbers 47-803630T, F523065, and F523065-1, so it installs as a direct replacement without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM and aftermarket part numbers does 18-3030 replace?\u003c\/strong\u003e Sierra 18-3030 replaces Chrysler\/Force 47-803630T, F523065-1, and F523065, as well as the aftermarket cross-reference numbers GLM 89450 and 9-45001 (also listed as 9-45001-10).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3030 impeller weigh?\u003c\/strong\u003e The Sierra 18-3030 impeller weighs 0.16 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-3030 impeller?\u003c\/strong\u003e Sierra 18-3030 ships in a package measuring 7 x 6 x 1 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3030 fit a 1988 Chrysler\/Force 125 HP model C?\u003c\/strong\u003e Yes, the same Sierra 18-3030 part number is the correct impeller for a 1988 Chrysler\/Force 125 HP model C, as well as the broader 1981-1989 125 HP range on other models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-3030 fit a 140 HP Chrysler\/Force outboard?\u003c\/strong\u003e Yes, Sierra 18-3030 fits Chrysler\/Force 140 HP outboards built between 1978 and 1982.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the Sierra 18-3030 impeller have?\u003c\/strong\u003e The Sierra 18-3030 impeller has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-3030 a genuine Sierra part or a generic aftermarket copy?\u003c\/strong\u003e The 18-3030 is manufactured by Sierra under its own part number and is built to meet or exceed original equipment quality for Chrysler\/Force outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the impeller do in a Chrysler\/Force outboard water pump?\u003c\/strong\u003e In the water pump housing, the Sierra 18-3030 impeller circulates cooling water through the outboard's engine block to regulate operating temperature.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3030 still available or has it been discontinued?\u003c\/strong\u003e Sierra 18-3030 remains an actively available part number for Chrysler\/Force 125 HP and 140 HP outboard water pump rebuilds.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136800475,"sku":"SIE-18-3030","price":19.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3030_lg__97514.1558125876.500.750.jpg?v=1785189121"},{"product_id":"sierra-18-3007-water-pump-impeller-for-mercury-outboards-30-70-hp-replaces-mercury-47-89983-47-89983t","title":"Sierra 18-3007 Impeller, Replaces Mercury Marine 47-89983T2, Fits 30-70 HP Outboards","description":"\u003cp\u003eThe Sierra 18-3007 is a replacement water pump impeller engineered for the cooling system of Mercury Marine outboard engines. The impeller is the rotating component inside the outboard's water pump housing that draws raw water from the lake or sea and circulates it through the engine block to keep operating temperatures in check. A worn, cracked, or melted impeller is one of the most common causes of outboard overheating, and replacing it on a routine schedule protects the powerhead from heat damage.\u003c\/p\u003e\u003cp\u003eThis impeller is built from black aluminum with flexible vanes designed to maintain consistent water flow at idle through wide-open throttle. It is designed as a direct fit for the Mercury Marine 47-89983 water pump impeller, giving boat owners a straightforward drop-in replacement during a scheduled water pump service or full water pump kit rebuild. The part is intended for outboard applications rated up to 70 horsepower with 4-stroke engines using a transom-mounted water pump and running on gasoline.\u003c\/p\u003e\u003cp\u003eEach unit ships as a single impeller (quantity of 1) for use in the lower unit water pump assembly. Sierra backs the part with its standard limited warranty against manufacturing defects.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3007\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e 4 Stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Transom Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Horsepower:\u003c\/strong\u003e 70 Horsepower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e Cooling the outboard motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999315021\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 47-89983T2, 47-89983Q1, 47-89983\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e4-stroke outboards up to 70 horsepower with a transom-mounted water pump\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e47-89983T2\u003c\/li\u003e\n\u003cli\u003e47-89983Q1\u003c\/li\u003e\n\u003cli\u003e47-89983\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3007 impeller replace?\u003c\/strong\u003e The Sierra 18-3007 impeller replaces Mercury Marine OEM numbers 47-89983T2, 47-89983Q1, and 47-89983, so it is a direct swap wherever those part numbers are called for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat horsepower range is the 18-3007 impeller designed for?\u003c\/strong\u003e This impeller is designed for 4-stroke outboard engines rated up to 70 horsepower that use a transom-mounted, gasoline-fueled water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in the package?\u003c\/strong\u003e One Sierra 18-3007 impeller is included per package; it is sold as a single unit rather than as part of a full water pump kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-3007 impeller made from?\u003c\/strong\u003e The 18-3007 is made from black aluminum, matching the construction of the Mercury Marine impeller it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3007 impeller weigh?\u003c\/strong\u003e The impeller weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3007 a genuine Mercury Marine part or an aftermarket replacement?\u003c\/strong\u003e The 18-3007 is a Sierra-brand aftermarket impeller manufactured as a direct equivalent to Mercury Marine part 47-89983, not an OEM Mercury Marine part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the water pump impeller on my outboard?\u003c\/strong\u003e A water pump impeller like the Sierra 18-3007 should be replaced on a routine maintenance schedule or immediately if the outboard is overheating, since worn or cracked vanes reduce raw water flow to the cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-3007 impeller include gaskets for the water pump housing?\u003c\/strong\u003e No, the 18-3007 package contains only the impeller itself; water pump housing gaskets are separate parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3007 impeller?\u003c\/strong\u003e The Sierra 18-3007 impeller carries UPC 030999315021.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3007 impeller covered by a warranty?\u003c\/strong\u003e Yes, the 18-3007 is covered under Sierra's standard limited warranty against manufacturing defects.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engine type is the 18-3007 impeller compatible with?\u003c\/strong\u003e It is compatible with 4-stroke gasoline outboard engines using a transom-mounted water pump, up to 70 horsepower.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136833243,"sku":"SIE-18-3007","price":17.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3007_lg__68032.1558125082.500.750.jpg?v=1785188882"},{"product_id":"sierra-18-3039-water-pump-impeller-for-mercury-outboards-replaces-oem-47-89981-456-id","title":"Sierra Impeller 18-3039, Replaces Mercury Marine 47-89981","description":"\u003cp\u003eThe Sierra 18-3039 is a replacement water pump impeller designed to restore proper cooling flow in marine engines that use the Mercury Marine 47-89981 impeller. The impeller is the core wear component inside a water pump housing, drawing raw water through the pump and circulating it through the engine's cooling passages to prevent overheating. Over time, impeller vanes lose flexibility, crack, or wear down, reducing pump output and putting the engine at risk of running hot. Replacing a worn impeller with the Sierra 18-3039 restores the pump's ability to move water at the correct rate.\u003c\/p\u003e\u003cp\u003eThis impeller ships as a single unit and is built to Sierra's standard fit and finish for marine water pump service. It is intended as a direct component replacement where the Mercury Marine 47-89981 impeller is specified, and is commonly installed during routine water pump maintenance or as part of a broader water pump rebuild.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3039\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999237149\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 47-89981\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits applications specifying the Mercury Marine 47-89981 impeller.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e47-89981\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3039 fit?\u003c\/strong\u003e The Sierra 18-3039 impeller is a direct replacement wherever the Mercury Marine 47-89981 impeller is specified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3039 the same as the Mercury Marine 47-89981?\u003c\/strong\u003e Yes, the Sierra 18-3039 is a cross-reference equivalent to the Mercury Marine 47-89981 impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in the package?\u003c\/strong\u003e One impeller is included with part number 18-3039.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3039 impeller weigh?\u003c\/strong\u003e It weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-3039 impeller made?\u003c\/strong\u003e The country of origin listed for this impeller is the United States.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-3039 is a Sierra-branded impeller, sold as a cross-reference equivalent to the OEM Mercury Marine 47-89981 part rather than a Mercury-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this part?\u003c\/strong\u003e The UPC for the Sierra 18-3039 impeller is 030999237149.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace this impeller?\u003c\/strong\u003e An impeller like the Sierra 18-3039 should be replaced when it shows cracked, torn, or stiffened vanes, or when engine cooling water flow drops, since a worn impeller reduces pump output.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3039 include the pump housing or just the impeller?\u003c\/strong\u003e This part number covers the impeller only; it does not include a pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-3039 as a routine maintenance replacement?\u003c\/strong\u003e Yes, the 18-3039 is suited for routine water pump maintenance wherever the Mercury Marine 47-89981 impeller is called for.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136866011,"sku":"SIE-18-3039","price":13.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3039_lg__66572.1558126221.500.750.jpg?v=1785188046"},{"product_id":"sierra-18-3023-water-pump-impeller-for-suzuki-df90-df115-df140-dt115-dt200-outboards-replaces-oem-17461-90j00","title":"Sierra 18-3023 Neoprene Impeller, 6 Fins, Replaces Suzuki 17461-94500, for Suzuki Outboard Motors","description":"\u003cp\u003eThe Sierra 18-3023 is a neoprene water pump impeller built for Suzuki outboard motors. The impeller drives raw water through the outboard's cooling system, keeping the engine running at proper operating temperature. It is molded from neoprene rubber, a material chosen for its resistance to heat, wear, and the abrasive effects of sand and grit that can pass through a raw-water intake. The impeller features 6 fins (blades) that seal against the pump housing to move water efficiently at both idle and wide-open throttle.\u003c\/p\u003e\u003cp\u003eThis impeller is finished in white and is built to meet or exceed original equipment quality, making it a direct functional replacement for the OEM Suzuki impeller in this water pump. It is designed for a specific fit, so buyers should confirm their outboard's part number against the cross-reference list below before ordering. Replacing a worn or cracked impeller on schedule helps prevent overheating damage to the powerhead, and this part is sized and finned to match the original Suzuki water pump kit it replaces.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3023\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Fins:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e 4 Stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Transom Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.35 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Uses:\u003c\/strong\u003e Fishing, Water Sports, General Boating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits Suzuki outboard motors that use the OEM impellers listed below. Check your engine's part number to confirm proper fit before ordering.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuzuki 17461-90J00\u003c\/li\u003e\n\u003cli\u003eSuzuki 17461-94500\u003c\/li\u003e\n\u003cli\u003eSuzuki 17461-94501\u003c\/li\u003e\n\u003cli\u003eSuzuki 17461-94502\u003c\/li\u003e\n\u003cli\u003eSuzuki 17461-94503\u003c\/li\u003e\n\u003cli\u003eSuzuki 17461-94504\u003c\/li\u003e\n\u003cli\u003eSuzuki 17461-94505\u003c\/li\u003e\n\u003cli\u003eSuzuki 17461-94506\u003c\/li\u003e\n\u003cli\u003eSuzuki 17461-94510\u003c\/li\u003e\n\u003cli\u003eSuzuki 17461-94511\u003c\/li\u003e\n\u003cli\u003eSuzuki 17461-94520\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-3023 impeller made of?\u003c\/strong\u003e The Sierra 18-3023 is made of neoprene rubber, a material chosen for heat resistance and durability in raw-water cooling pumps on Suzuki outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fins does this impeller have?\u003c\/strong\u003e The Sierra 18-3023 has 6 fins that seal against the water pump housing to circulate cooling water through the outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich Suzuki OEM part numbers does the 18-3023 replace?\u003c\/strong\u003e The Sierra 18-3023 replaces Suzuki 17461-90J00, 17461-94500, 17461-94501, 17461-94502, 17461-94503, 17461-94504, 17461-94505, 17461-94506, 17461-94510, 17461-94511, and 17461-94520.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3023 a genuine Suzuki part or aftermarket?\u003c\/strong\u003e The 18-3023 is a Sierra-brand aftermarket impeller built to meet or exceed original equipment quality as a replacement for the listed Suzuki OEM impellers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3023 impeller weigh?\u003c\/strong\u003e The Sierra 18-3023 impeller weighs 0.35 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-3023 impeller?\u003c\/strong\u003e It is white, made from neoprene rubber.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the Sierra 18-3023 fit any Suzuki outboard?\u003c\/strong\u003e The Sierra 18-3023 is fit-specific to Suzuki outboards that originally used one of the OEM impeller numbers it replaces, so buyers should check their engine's part number to confirm proper fit before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this impeller do in the outboard's cooling system?\u003c\/strong\u003e The Sierra 18-3023 impeller drives raw water through the outboard's water pump housing to cool the engine as it runs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3023 designed for gasoline or diesel outboards?\u003c\/strong\u003e The Sierra 18-3023 is designed for gasoline-fueled, 4-stroke Suzuki outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in the package?\u003c\/strong\u003e The Sierra 18-3023 is sold as a single impeller, unit count of 1.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136898779,"sku":"SIE-18-3023","price":46.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3023_lg__62410.1558125814.500.750.jpg?v=1785188856"},{"product_id":"water-pump-impeller-for-yamaha-outboards-replaces-yamaha-67f-44352-00-00-sierra-18-3042","title":"Sierra 18-3042 Impeller, Replaces Yamaha 67F-44352-00-00, for Yamaha Outboard Engines","description":"\u003cp\u003eThe Sierra 18-3042 Impeller is a water pump impeller designed for use in Yamaha outboard engines. It is the wear component inside the lower unit water pump that circulates raw water through the engine block to keep it cool, and it is one of the most common maintenance replacement parts on an outboard.\u003c\/p\u003e\u003cp\u003eEach package includes one impeller. The 18-3042 is built with a high speed steel blade construction and a round blade shape. Sierra states that each of its parts meets or exceeds the original equipment part it replaces, making this impeller a direct functional replacement for the OEM Yamaha part it is designed around.\u003c\/p\u003e\u003cp\u003eThis impeller is intended to be installed as part of a complete water pump service. Sierra recommends pairing the 18-3042 with Sierra's 18-3451 Water Pump Kit or 18-3409 Water Pump Kit with Housing when performing a full pump rebuild, since impellers are typically replaced along with the surrounding pump housing components and gaskets for a proper seal and consistent water flow.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3042\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Yamaha Outboard Water Pumps \u0026amp; Impellers 2 Stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade Material:\u003c\/strong\u003e High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade Shape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Multicoloured\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 impeller per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.08 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282256852\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for use in Yamaha outboard engines.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e67F-44352-00-00\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-3042 impeller used for?\u003c\/strong\u003e It is a water pump impeller designed for use in Yamaha outboard engines, circulating raw water through the engine to keep it cool.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3042 impeller replace a Yamaha OEM part?\u003c\/strong\u003e Yes, the Sierra 18-3042 directly replaces Yamaha OEM part number 67F-44352-00-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in a package?\u003c\/strong\u003e The Sierra 18-3042 package includes one impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the impeller blade made of?\u003c\/strong\u003e The 18-3042 impeller has a high speed steel blade construction with a round blade shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3042 impeller weigh?\u003c\/strong\u003e It weighs 0.08 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould this impeller be installed alone or with other parts?\u003c\/strong\u003e Sierra recommends installing the 18-3042 as part of a full water pump service, using it with Sierra's 18-3451 Water Pump Kit or 18-3409 Water Pump Kit with Housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3042 a genuine OEM part or aftermarket?\u003c\/strong\u003e It is a Sierra aftermarket replacement impeller, and Sierra states it meets or exceeds the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the 18-3042 impeller compatible with?\u003c\/strong\u003e The 18-3042 is designed for use in Yamaha outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3042 interchangeable with any other brand parts?\u003c\/strong\u003e The Sierra 18-3042 is interchangeable with Mallory part number 9-45612.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with the 18-3042 impeller?\u003c\/strong\u003e The Sierra 18-3042 impeller carries UPC 808282256852.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a full water pump kit to replace just the impeller?\u003c\/strong\u003e Not necessarily, but Sierra pairs the 18-3042 impeller with its 18-3451 or 18-3409 water pump kits for a complete pump rebuild rather than an impeller-only swap.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136931547,"sku":"SIE-18-3042","price":29.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3042_lg__62772.1558123104.500.750.jpg?v=1785188075"},{"product_id":"sierra-18-3040-water-pump-impeller-for-yamaha-outboards-replaces-63v-44352-01-00-6-fin-neoprene","title":"Sierra 18-3040 Impeller, Replaces Yamaha 63V-44352-01-00, Neoprene Water Pump Impeller for Yamaha Outboard Motors","description":"\u003cp\u003eThe Sierra 18-3040 is a neoprene water pump impeller built for Yamaha outboard motors. It is the rotating component inside the outboard's water pump housing that draws in raw water and circulates it through the cooling system, so a worn or cracked impeller is a common cause of overheating. This impeller has 6 fins molded from neoprene rubber, a material chosen for its resistance to heat, wear, and the abrasive conditions found inside a marine water pump housing. Each package includes one impeller, ready to install as a standalone replacement or as part of a full water pump service.\u003c\/p\u003e\u003cp\u003eThe 18-3040 is designed to work with Sierra's own water pump service kits for Yamaha outboards, including the 18-3433 Water Pump Kit without Housing, the 18-3412 Water Pump Kit with Housing, the 18-3475 Water Pump Repair Kit without Housing, and the 18-3479 Water Pump Repair Kit with Housing, giving installers flexibility depending on whether the housing also needs replacement. It directly replaces the Yamaha outboard OEM impeller 63V-44352-01-00, making it a straightforward drop-in swap during routine water pump maintenance or when addressing reduced cooling flow.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3040\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Fins:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e 1 impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Water Pump Kits:\u003c\/strong\u003e Sierra 18-3433, 18-3412, 18-3475, 18-3479\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282167431\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Yamaha 63V-44352-01-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Yamaha outboard engines.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e63V-44352-01-00\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3040 impeller fit?\u003c\/strong\u003e The Sierra 18-3040 is designed for Yamaha outboard engines, replacing the water pump impeller as part of routine cooling system maintenance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3040 the same as Yamaha part 63V-44352-01-00?\u003c\/strong\u003e Yes, the 18-3040 replaces Yamaha outboard OEM impeller 63V-44352-01-00 and is built to meet or exceed the performance of the original part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3040 impeller weigh?\u003c\/strong\u003e This impeller weighs 0.05 pounds, consistent with a compact single water pump impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-3040 impeller made from?\u003c\/strong\u003e Neoprene rubber is used for the 18-3040, chosen for its resistance to heat and wear inside a marine water pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fins does the Sierra 18-3040 impeller have?\u003c\/strong\u003e The 18-3040 has 6 fins, which drive water circulation through the outboard's cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-3040 impeller?\u003c\/strong\u003e It is white, the standard color for this neoprene impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-3040?\u003c\/strong\u003e Each order includes one Sierra 18-3040 impeller; the water pump housing and other service parts are sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-3040 with a Sierra water pump kit?\u003c\/strong\u003e Yes, the 18-3040 is compatible with Sierra's 18-3433 and 18-3412 Water Pump Kits and the 18-3475 and 18-3479 Water Pump Repair Kits for Yamaha outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3040 a genuine Yamaha part or aftermarket?\u003c\/strong\u003e The 18-3040 is a Sierra-manufactured aftermarket impeller that replaces Yamaha OEM part 63V-44352-01-00, built to meet or exceed the original equipment specification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the 18-3040 impeller be replaced?\u003c\/strong\u003e A worn, cracked, or missing-fin impeller reduces cooling water flow and can cause an outboard to overheat, which is when replacing the 18-3040 is recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-3040 require a full water pump housing to install?\u003c\/strong\u003e No, the 18-3040 is the impeller only; it can be installed alone or alongside a housing when used with Sierra's full water pump kits.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136997083,"sku":"SIE-18-3040","price":18.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3040_lg__25861.1558126275.500.750.jpg?v=1785188056"},{"product_id":"sierra-18-3046-neoprene-water-pump-impeller-kit-replaces-jabsco-18838-0001-for-inboard-engine-cooling-systems","title":"Sierra 18-3046 Neoprene Impeller Kit, Replaces Sherwood 9959K, Chrysler Inboard","description":"\u003cp\u003eThe Sierra 18-3046 is a neoprene impeller kit built for Chrysler Inboard raw water cooling systems. The kit contains one 18-3060 neoprene impeller, machined for a precise fit against the pump housing to maintain proper water flow and cooling to the engine. Neoprene construction resists wear from continuous rotation and provides reliable sealing against the pump cam and wear plate, which helps protect the engine from overheating caused by a worn or hardened impeller. The impeller measures 2 7\/16 inches (62 mm) in diameter and 1 1\/4 inches (31.8 mm) in width, sized to match the original Chrysler Inboard water pump impeller it replaces. This is a direct replacement for the Sherwood 9959K impeller, making it a straightforward swap for boat owners performing routine water pump maintenance or replacing a failed impeller. Sierra manufactures this kit to meet or exceed the performance of the original equipment part it replaces. Regular impeller replacement is a standard part of marine engine maintenance, and this kit provides the correct component sized and shaped for Chrysler Inboard applications.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3046\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e 18-3060 Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpeller Diameter:\u003c\/strong\u003e 2 7\/16 inches (62 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpeller Width:\u003c\/strong\u003e 1 1\/4 inches (31.8 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.39 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282243777\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Chrysler Inboard cooling system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eChrysler Inboard cooling \/ internal engine systems\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSherwood 9959K\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3046 impeller kit include?\u003c\/strong\u003e The kit contains one 18-3060 neoprene impeller, sized to replace the water pump impeller in Chrysler Inboard cooling systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the impeller in the 18-3046 kit?\u003c\/strong\u003e The impeller measures 2 7\/16 inches (62 mm) in diameter and 1 1\/4 inches (31.8 mm) in width.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3046 a direct replacement for the Sherwood 9959K?\u003c\/strong\u003e Yes, the Sierra 18-3046 impeller kit replaces the Sherwood 9959K impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3046 impeller made from?\u003c\/strong\u003e It is made from neoprene, a synthetic rubber material that resists wear and provides a reliable seal in the water pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat application is the Sierra 18-3046 impeller kit designed for?\u003c\/strong\u003e This impeller kit is designed for Chrysler Inboard cooling and internal engine systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3046 impeller kit weigh?\u003c\/strong\u003e The Sierra 18-3046 impeller kit weighs 0.39 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3046 a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-3046 is manufactured by Sierra, and it is built to meet or exceed the performance of the original equipment impeller it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-3046 impeller finished?\u003c\/strong\u003e The 18-3060 impeller included in the 18-3046 kit has a machined finish for a precise fit against the water pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the impeller in a Chrysler Inboard water pump be replaced?\u003c\/strong\u003e Impellers wear over time from continuous rotation and should be replaced when cracked, hardened, or showing worn vanes; the Sierra 18-3046 kit provides the correctly sized replacement impeller for this task.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3046 impeller kit?\u003c\/strong\u003e The UPC for the Sierra 18-3046 impeller kit is 808282243777.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988137062619,"sku":"SIE-18-3046","price":42.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3046_lg__63845.1558123279.500.750.jpg?v=1785188041"},{"product_id":"sierra-18-3044-water-pump-impeller-for-johnson-evinrude-outboards-replaces-omc-385072-6-fin-neoprene","title":"Sierra 18-3044 Neoprene Water Pump Impeller, Replaces OMC 385072, for Johnson\/Evinrude 85-115 HP Outboards","description":"\u003cp\u003eThe Sierra 18-3044 is a neoprene water pump impeller built as a direct replacement for the factory impeller in select Johnson\/Evinrude outboard motors. The impeller is the wear component inside the outboard's water pump housing that circulates raw water through the powerhead to keep the engine cool, and a cracked, glazed, or worn-down impeller is one of the most common causes of overheating in outboard motors. This impeller features a 6-fin neoprene design in white, engineered to match OEM dimensions and rotation so it seats correctly in the original water pump housing.\u003c\/p\u003e\u003cp\u003eSierra manufactures this part to meet or exceed the specification of the original equipment part it replaces, and each package includes one impeller. It is sold as an individual wear part, so buyers doing a full water pump service should also plan to replace the housing gasket and wear plate as part of the same job if those show wear.\u003c\/p\u003e\u003cp\u003eThe 18-3044 is built for Johnson\/Evinrude outboards rated at 85 HP (1969-1972), 100 HP (1969-1972), and 115 HP (1969-1970). Confirm your outboard's horsepower and model year against this fitment before ordering, since Sierra offers different impeller part numbers for other year ranges on the same horsepower engines.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3044\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Fins:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.41 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 impeller per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mallory 9-45220, GLM 89612, OMC 385072\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eJohnson\/Evinrude outboard, 85 HP, 1969-1972\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude outboard, 100 HP, 1969-1972\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude outboard, 115 HP, 1969-1970\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMallory 9-45220\u003c\/li\u003e\n\u003cli\u003eGLM 89612\u003c\/li\u003e\n\u003cli\u003eOMC 385072\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards does the Sierra 18-3044 impeller fit?\u003c\/strong\u003e The Sierra 18-3044 fits Johnson\/Evinrude outboards rated at 85 HP for model years 1969-1972, 100 HP for model years 1969-1972, and 115 HP for model years 1969-1970.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3044 a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e It is a genuine Sierra-manufactured impeller, built as a replacement for the original equipment part and produced to meet or exceed the OEM specification it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-3044 cross-reference to?\u003c\/strong\u003e The 18-3044 is interchangeable with Mallory 9-45220, GLM 89612, and OMC 385072, so any of those numbers can be used to identify the same impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the impeller made from?\u003c\/strong\u003e The Sierra 18-3044 is molded from neoprene, a synthetic rubber chosen for its resistance to heat and wear inside the outboard's raw water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fins does the 18-3044 impeller have?\u003c\/strong\u003e This impeller has a 6-fin design, matching the original configuration used in the Johnson\/Evinrude water pump housings it fits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in one package?\u003c\/strong\u003e Each Sierra 18-3044 package contains one impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3044 impeller weigh?\u003c\/strong\u003e The Sierra 18-3044 weighs 0.41 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat causes an outboard water pump impeller to need replacement?\u003c\/strong\u003e Impellers like the 18-3044 wear down or crack over time from heat and friction inside the water pump housing, which reduces raw water flow and can lead to engine overheating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3044 include the water pump housing or gasket?\u003c\/strong\u003e No, the Sierra 18-3044 is the impeller only; the housing and gasket are separate parts and should be inspected or replaced separately during a water pump service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-3044 fit a Johnson\/Evinrude 85 HP from the 1980s?\u003c\/strong\u003e No, the Sierra 18-3044 is specified for the 85 HP Johnson\/Evinrude covering 1969-1972; later 85 HP model years use a different Sierra impeller part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs color or fin count a functional spec or just cosmetic?\u003c\/strong\u003e Fin count is functional on the 18-3044, since its 6-fin design is engineered to match the pump housing's flow requirements; the white color of the neoprene is not a performance factor.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988137095387,"sku":"SIE-18-3044","price":41.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3044_lg__40115.1558123211.500.750.jpg?v=1785188971"},{"product_id":"sierra-18-3043-water-pump-impeller-for-johnson-evinrude-outboard-replaces-omc-389642","title":"Sierra 18-3043 Impeller - Replaces OMC 389642, Fits 140\/150\/175 HP Evinrude\/Johnson Outboards","description":"\u003cp\u003eThe Sierra 18-3043 Impeller is a replacement water pump impeller engineered to meet or exceed original equipment quality for select Evinrude\/Johnson outboard motors. As the rotating component inside the outboard's water pump, the impeller draws raw water through the lower unit and pushes it up to cool the powerhead, making it a critical wear item for reliable engine operation. The impeller is constructed of a durable elastomer body bonded to a metal insert, with a black finish, and is built to the fit and tolerances of the original part it replaces.\u003c\/p\u003e\u003cp\u003eThis impeller is designed for 140 HP outboards from 1977-78, and 150 HP and 175 HP outboards from 1976-78. It directly interchanges with several original equipment and aftermarket cross-reference numbers, so it can be ordered using either the Sierra part number or a known OEM equivalent. Because water pump impellers wear over time and can fail without warning, causing overheating, replacing the 18-3043 on a regular service interval or at the first sign of reduced water flow helps protect the engine from heat-related damage.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3043\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999315052\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.35 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 89680, Evinrude\/Johnson 389642, 777212, 385528, Mallory 9-45203, OMC 389642\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEvinrude\/Johnson 140 HP outboards, 1977-78\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 150 HP outboards, 1976-78\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 175 HP outboards, 1976-78\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 89680\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 389642\u003c\/li\u003e\n\u003cli\u003e777212\u003c\/li\u003e\n\u003cli\u003e385528\u003c\/li\u003e\n\u003cli\u003eMallory 9-45203\u003c\/li\u003e\n\u003cli\u003eOMC 389642\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3043 impeller fit?\u003c\/strong\u003e The Sierra 18-3043 fits Evinrude\/Johnson 140 HP outboards from 1977-78, and 150 HP and 175 HP outboards from 1976-78.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3043 interchangeable with OEM part numbers?\u003c\/strong\u003e Yes, the 18-3043 cross-references to OMC 389642, GLM 89680, Evinrude\/Johnson 389642, 777212, 385528, and Mallory 9-45203, so it can be ordered under any of those equivalent numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3043 impeller made of?\u003c\/strong\u003e This impeller is made of aluminum and stainless steel components with a black finish, built to meet or exceed the quality of the original equipment part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3043 impeller weigh?\u003c\/strong\u003e The Sierra 18-3043 impeller weighs 0.35 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in a package of the 18-3043?\u003c\/strong\u003e The 18-3043 is sold as a single impeller, with a unit count of 1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3043 fit 1976 model year 140 HP outboards?\u003c\/strong\u003e No, the 18-3043 is designated for 140 HP outboards from 1977-78; the 1976 model year is not covered by this part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3043 an OEM or aftermarket part?\u003c\/strong\u003e The 18-3043 is a Sierra-branded aftermarket impeller manufactured to meet or exceed the quality of the original OMC 389642 equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3043 impeller?\u003c\/strong\u003e The UPC for the Sierra 18-3043 impeller is 030999315052.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does a water pump impeller need to be replaced?\u003c\/strong\u003e An impeller like the 18-3043 wears down over time from friction and heat, and a worn impeller reduces raw water flow to the engine, which can lead to overheating; replacing it at regular intervals or when water flow drops helps prevent engine damage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3043 fit both 150 HP and 175 HP outboards?\u003c\/strong\u003e Yes, the 18-3043 fits 150 HP and 175 HP Evinrude\/Johnson outboards from 1976-78, in addition to 140 HP models from 1977-78.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988137259227,"sku":"SIE-18-3043","price":41.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3043_lg__15047.1558123161.500.750.jpg?v=1785188627"},{"product_id":"sierra-18-3051-water-pump-impeller-for-johnson-evinrude-outboards-replaces-omc-395289","title":"Sierra 18-3051 Impeller, Replaces 395289","description":"\u003cp\u003eThe Sierra 18-3051 is an aluminum impeller built for outboard engine water pumps, designed as a direct replacement for OEM part 395289. As the wear component inside the water pump housing, the impeller drives raw water through the cooling system to keep the engine running at safe operating temperatures; a worn, cracked, or missing vane is one of the most common causes of overheating and reduced cooling flow. The 18-3051 is constructed from aluminum for durability under continuous rotation and contact with the pump housing, and it is rated for use in salt water as well as fresh water service, making it suitable for coastal and offshore applications where corrosion resistance and consistent water flow matter. It operates automatically as part of the engine's cooling circuit, requiring no separate controls once installed. This impeller is sold as a single unit and is intended to be installed as part of a routine water pump service, alongside inspection of the pump housing, wear plate, and gaskets. Sierra manufactures this part to be a straightforward OEM equivalent, so buyers replacing a worn factory impeller can order by the OEM number 395289 or the Sierra part number 18-3051 and get the correct replacement without needing to identify additional cross-reference numbers.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3051\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 395289\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.08 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e 4 Stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Engine Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e For Salt Water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999315076\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits engines using OEM impeller 395289; verify against your engine's original part number before ordering.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e395289\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3051 impeller replace?\u003c\/strong\u003e The Sierra 18-3051 is a direct replacement for OEM part number 395289.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3051 impeller made of rubber or aluminum?\u003c\/strong\u003e The impeller body and mounting hub are constructed from aluminum, though impellers of this type typically pair a metal hub with flexible drive vanes for pumping water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the Sierra 18-3051 be used in salt water?\u003c\/strong\u003e Yes, this impeller is rated for salt water use as well as fresh water applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-3051 impeller?\u003c\/strong\u003e It is black in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3051 weigh?\u003c\/strong\u003e The 18-3051 impeller weighs 0.08 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3051 come with the water pump housing or gaskets?\u003c\/strong\u003e No, the package includes the impeller only; it does not include the pump housing, wear plate, or gaskets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my impeller needs replacing?\u003c\/strong\u003e Reduced or no water flow from the engine's telltale, overheating, or visibly cracked or missing vanes on the old impeller are signs it is time to install a replacement like the Sierra 18-3051.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3051 an OEM part or an aftermarket part?\u003c\/strong\u003e It is a Sierra aftermarket impeller manufactured as an equivalent to OEM part 395289, not an OEM-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engine type is the 18-3051 impeller designed for?\u003c\/strong\u003e It is listed for 4 stroke engines with a gasoline fuel type and an engine-mounted water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the operation of the 18-3051 impeller require any manual controls?\u003c\/strong\u003e No, the 18-3051 operates automatically as part of the engine's cooling water pump once installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in one order of part 18-3051?\u003c\/strong\u003e One order includes a single 18-3051 impeller unit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988137324763,"sku":"SIE-18-3051","price":17.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3051_lg__66373.1558123575.500.750.jpg?v=1785188298"},{"product_id":"sierra-18-3047-neoprene-water-pump-impeller-kit-replaces-jabsco-13554-0001-yanmar-119773-42600-00-fits-crusader-305-350-454-cid-inboard","title":"Sierra 18-3047 Impeller Kit, Neoprene, Fits Crusader 305, 350 \u0026 454 CID Engines","description":"\u003cp\u003eThe Sierra 18-3047 Impeller Kit is a neoprene water pump impeller kit built to circulate raw cooling water through the engine's water pump on Crusader 305, 350, and 454 CID engines. The kit includes the 18-3061 impeller, a 12-fin neoprene component engineered to maintain consistent water flow and prevent overheating during operation. Neoprene construction offers strong resistance to heat, oil, and wear from continuous pump cycling, making it a durable choice for regular replacement intervals or as a spare kept onboard.\u003c\/p\u003e\u003cp\u003eThis impeller is interchangeable with common OEM and aftermarket cross-reference numbers, giving boat owners a reliable option when the original part number is not readily available. Installation follows standard water pump service procedures: the impeller seats inside the pump housing and its flexible fins draw and push water through the cooling circuit as the engine runs. Regular impeller replacement helps prevent dry-running damage and keeps engine temperatures within normal operating range.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3047\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e 18-3061 Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Fins:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Crusader 305, 350, \u0026amp; 454 CID engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.5 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282243784\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 89621, Jabsco 18948-0001, Mallory 9-45706, Sherwood 10615K, Volvo Penta 835874\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eCrusader 305, 350, \u0026amp; 454 CID engines.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eGLM 89621, Jabsco 18948-0001, Mallory 9-45706, Sherwood 10615K, Volvo Penta 835874\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-3047 impeller kit fit?\u003c\/strong\u003e The Sierra 18-3047 impeller kit fits Crusader 305, 350, and 454 CID engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-3047 kit?\u003c\/strong\u003e The kit includes the 18-3061 neoprene impeller, ready to install in the engine's water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fins does the impeller have?\u003c\/strong\u003e The impeller has 12 fins, which draw and circulate raw water through the cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3047 impeller made from?\u003c\/strong\u003e It is made from neoprene, chosen for its resistance to heat, oil, and repeated flexing during pump operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3047 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e Sierra 18-3047 is an aftermarket impeller kit manufactured to meet or exceed the performance of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does 18-3047 cross-reference with?\u003c\/strong\u003e It is interchangeable with GLM 89621, Jabsco 18948-0001, Mallory 9-45706, Sherwood 10615K, and Volvo Penta 835874.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sherwood 10615K impeller cross to the Sierra 18-3047?\u003c\/strong\u003e Yes, Sherwood 10615K is listed as an interchangeable cross-reference for the Sierra 18-3047 impeller kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3047 impeller kit weigh?\u003c\/strong\u003e The Sierra 18-3047 impeller kit weighs 0.5 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in one 18-3047 kit?\u003c\/strong\u003e One 18-3047 kit contains a single 18-3061 neoprene impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this impeller work with a Volvo Penta 835874 pump?\u003c\/strong\u003e Yes, the Sierra 18-3047 is listed as interchangeable with Volvo Penta 835874.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know when to replace the impeller in my water pump?\u003c\/strong\u003e A worn or cracked impeller reduces raw water flow and can lead to engine overheating; the Sierra 18-3047 kit provides a direct replacement impeller for Crusader 305, 350, and 454 CID engines when service is due.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3047 impeller compatible with Mallory 9-45706 applications?\u003c\/strong\u003e Yes, Mallory 9-45706 is one of the OEM cross-reference numbers for the Sierra 18-3047 impeller kit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988137357531,"sku":"SIE-18-3047","price":37.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3047_lg__53934.1558123331.500.750.jpg?v=1785188882"},{"product_id":"sierra-18-3050-water-pump-impeller-for-johnson-evinrude-2-5-4-hp-outboards-ultra-excel-replaces-omc-386084","title":"Sierra 18-3050 Impeller with Key for Johnson\/Evinrude 2.5, 3, 4, Ultra, Excel Outboards, Replaces OMC 386084","description":"\u003cp\u003eThe Sierra 18-3050 is a water pump impeller designed for Johnson\/Evinrude (OMC\/BRP) outboards, fitting the 2.5, 3, and 4 horsepower models as well as the Ultra and Excel lines. The impeller is the wear component inside the outboard's water pump housing that draws raw water in to cool the engine, and it is one of the most common maintenance replacement parts on a small outboard. This unit ships with a key included, so it is ready to install alongside the pump housing, gaskets, and other water pump service parts without needing to source the key separately. The impeller body is made of alloy steel. As a Sierra part, the 18-3050 is built as a direct equivalent to the OMC impeller it replaces, letting owners restore proper cooling water flow using a part number matched to the original engine specification rather than a generic substitute. Because a worn or cracked impeller is a leading cause of overheating on small outboards, keeping a correctly sized replacement like the 18-3050 on hand is a standard part of routine outboard maintenance for the 2.5, 3, and 4 HP Johnson\/Evinrude Ultra and Excel models.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3050\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Impeller, Key\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\/Finish:\u003c\/strong\u003e Unfinished\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e OMC 386084\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999237156\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude (OMC\/BRP) outboards: 2.5, 3, 4 HP, Ultra, Excel\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOMC 386084\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards does the Sierra 18-3050 impeller fit?\u003c\/strong\u003e The Sierra 18-3050 is designed for Johnson\/Evinrude (OMC\/BRP) outboards rated 2.5, 3, and 4 horsepower, as well as the Ultra and Excel models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3050 a direct OEM replacement?\u003c\/strong\u003e Yes, the Sierra 18-3050 replaces OMC part number 386084, making it a direct equivalent for that OEM impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the impeller come with the key needed for installation?\u003c\/strong\u003e Yes, the 18-3050 ships with a key included, so it is ready to install without sourcing the key separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3050 impeller made of?\u003c\/strong\u003e The Sierra 18-3050 impeller is made of alloy steel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3050 impeller weigh?\u003c\/strong\u003e The Sierra 18-3050 impeller weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color or finish does the 18-3050 impeller have?\u003c\/strong\u003e The 18-3050 has an unfinished color\/finish, as supplied from the factory.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-3050?\u003c\/strong\u003e Ordering the Sierra 18-3050 gets you the impeller plus the installation key.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace this impeller?\u003c\/strong\u003e A worn, cracked, or brittle impeller reduces raw water flow and is a common cause of overheating in small Johnson\/Evinrude outboards, so replacing the 18-3050 on schedule keeps the cooling system working properly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3050 the same part as the 18-3051 impeller?\u003c\/strong\u003e No, the 18-3050 and 18-3051 are separate Sierra part numbers replacing different OEM impellers, so buyers should confirm which OEM number their engine calls for before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3050 impeller work for both port and starboard installations?\u003c\/strong\u003e The 18-3050 is a water pump impeller and is not a side-specific part; it is used within the outboard's single water pump housing rather than mounted on a specific side.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat brand makes the 18-3050 impeller?\u003c\/strong\u003e The 18-3050 impeller is manufactured by Sierra.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with the Sierra 18-3050?\u003c\/strong\u003e The Sierra 18-3050 impeller carries UPC 030999237156.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988137390299,"sku":"SIE-18-3050","price":13.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3050_lg__16034.1558123452.500.750.jpg?v=1785188298"},{"product_id":"sierra-18-3052-water-pump-impeller-with-6-fins-replaces-mercury-mariner-47-89984-fits-20-hp-outboards-1970-1985","title":"Sierra 18-3052 Neoprene Water Pump Impeller, Replaces 47-89982, Fits Mercury\/Mariner 20 HP (Model 200) Outboard","description":"\u003cp\u003eThe Sierra 18-3052 is a neoprene water pump impeller built to replace the cooling system impeller on Mercury\/Mariner 20 hp (model 200) outboard motors. As the rotating component inside the outboard's water pump housing, the impeller draws raw water through the lower unit and pushes it up to the powerhead to cool the engine block and exhaust; a worn, cracked, or brittle impeller reduces water flow and can allow the engine to run hot, so replacing it on schedule protects against overheating damage.\u003c\/p\u003e\u003cp\u003eThis impeller is molded from neoprene rubber, a material chosen for its resistance to heat, fuel, and oil exposure inside the water pump housing, and it is built with 6 fins to move water efficiently through the pump body. It carries a white color finish and is sized as a direct fit for the water pump housing used on the applicable Mercury\/Mariner outboard. Installing the correct impeller for your specific engine and pump housing is important, since impellers are sized and finned differently across outboard models and horsepower ratings.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3052\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Fins:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999315083\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury\/Mariner 20 hp (model 200) outboard, 1970-1985\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e47-89982 (Mercury Marine)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3052 impeller fit?\u003c\/strong\u003e The Sierra 18-3052 is designed for Mercury\/Mariner 20 hp (model 200) outboard motors from 1970-1985.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-3052 replace?\u003c\/strong\u003e This impeller replaces Mercury Marine part number 47-89982.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3052 impeller made from?\u003c\/strong\u003e Neoprene rubber is used for the Sierra 18-3052, chosen for its resistance to heat, fuel, and oil inside the water pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fins does the 18-3052 impeller have?\u003c\/strong\u003e Six fins are molded into the Sierra 18-3052 to move raw cooling water through the pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3052 impeller weigh?\u003c\/strong\u003e The Sierra 18-3052 weighs 0.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-3052 impeller?\u003c\/strong\u003e It has a white finish, as molded in the neoprene material of the 18-3052.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3052 a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-3052 is a Sierra-branded replacement impeller manufactured to replace Mercury Marine 47-89982, sold as an aftermarket equivalent to the OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in a package of the 18-3052?\u003c\/strong\u003e Each 18-3052 package contains 1 impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace the impeller on my Mercury 20 hp outboard?\u003c\/strong\u003e A worn, cracked, or hardened impeller reduces raw water flow to the engine, which can cause overheating; the Sierra 18-3052 replaces this wear part on Mercury\/Mariner 20 hp (model 200) outboards from 1970-1985.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-3052 fit other Mercury outboard horsepower models?\u003c\/strong\u003e The Sierra 18-3052 is specified for the Mercury\/Mariner 20 hp (model 200) outboard, 1970-1985; other horsepower models use different impellers.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988137423067,"sku":"SIE-18-3052","price":20.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3052_lg__82447.1558123702.500.750.jpg?v=1785188883"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/collections\/JON-10-24915-01__02316.1739462562.500.750.jpg?v=1785356944","url":"https:\/\/www.goodvibesmarina.com\/collections\/gvcat-engine-parts-systems-cooling-system-water-pumps-impeller-kits.oembed","provider":"Good Vibes Marina","version":"1.0","type":"link"}