{"title":"Bearings, Bushings \u0026 Thrust Washers","description":null,"products":[{"product_id":"sierra-18-0203-9-bell-housing-washer-replaces-mercruiser-12-35935-fits-all-mercruiser-sterndrives-1963-1998-pack-of-5","title":"Sierra 18-0203-9 Bell Housing Washer, Replaces Mercruiser 12-29395, Fits Sterndrives 1963-1998, Pack of 5","description":"\u003cp\u003eThe Sierra 18-0203-9 Bell Housing Washer is a brass conical spring washer designed for use at the bell housing joint on Mercruiser sterndrive units. It is sold in a package of 5, matching the quantity typically needed for a bell housing service or rebuild job. The conical spring design allows the washer to provide consistent seating pressure at the fastener location, helping maintain a secure, properly torqued connection during reassembly.\u003c\/p\u003e\u003cp\u003eBuilt from brass, the washer resists corrosion in the marine environment better than uncoated steel alternatives, which matters given its location near the drive unit and exposure to bilge moisture and saltwater spray. Each washer measures 0.39 x 0.39 x 0.39 inches. The Sierra 18-0203-9 is intended as a direct equivalent for the original equipment washer it replaces, so it installs using the same fasteners and orientation as the factory part with no modification required.\u003c\/p\u003e\u003cp\u003eThis washer fits all Mercruiser sterndrives from 1963 to 1998, making it a common replacement part for owners doing bell housing maintenance, gasket replacement, or a full drive service on older Mercruiser-powered boats. Because it is sold in a 5-pack, it is priced and packaged for a complete job rather than a single washer replacement.\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 18-0203-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Bell Housing Washer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher Type:\u003c\/strong\u003e Conical Spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282166816\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eAll Mercruiser sterndrives, 1963-1998\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e12-29395\u003c\/li\u003e\n\u003cli\u003e12-8M0042641\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-0203-9 washer fit?\u003c\/strong\u003e The Sierra 18-0203-9 Bell Housing Washer fits all Mercruiser sterndrives from 1963 to 1998.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many washers come in a pack?\u003c\/strong\u003e The 18-0203-9 is sold in a package of 5 brass bell housing washers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this washer replace?\u003c\/strong\u003e Sierra 18-0203-9 replaces OEM numbers 12-29395 and 12-8M0042641.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the bell housing washer made from?\u003c\/strong\u003e It is made from brass, which resists corrosion better than uncoated steel in a marine bilge environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Sierra 18-0203-9 washer?\u003c\/strong\u003e Each washer in the 18-0203-9 pack measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of washer is this?\u003c\/strong\u003e The 18-0203-9 is a conical spring washer, which provides consistent seating pressure at the bell housing fastener.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0203-9 an aftermarket or genuine Mercruiser part?\u003c\/strong\u003e It is a Sierra aftermarket washer manufactured to be a direct equivalent to the original Mercruiser bell housing washer it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-0203-9 washer pack weigh?\u003c\/strong\u003e The full package of 5 Sierra 18-0203-9 washers weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a full pack of 5 for a bell housing job?\u003c\/strong\u003e The 18-0203-9 is packaged in quantities of 5 to match a typical bell housing service, though exact usage depends on the specific job.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this washer work on a Mercruiser from the 2000s?\u003c\/strong\u003e The Sierra 18-0203-9 is specified for Mercruiser sterndrives from 1963 to 1998; fitment outside that range is not confirmed for this part.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988057960667,"sku":"SIE-18-0203-9","price":12.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0203_lg__56485.1558119673.500.750.jpg?v=1785187970"},{"product_id":"sierra-18-1143-tapered-roller-bearing-replaces-mercury-mercruiser-31-36387a1-outboard-gearcase-bearing","title":"Sierra 18-1143 Tapered Roller Bearing, Replaces 31-42647A1, for Mercury Outboard Gearcase","description":"\u003cp\u003eThe Sierra 18-1143 Tapered Roller Bearing is a precision alloy steel bearing built for the gearcase of Mercury outboard motors. It is machined to original-equipment tolerances so it seats correctly on the pinion and drive shaft assemblies it is designed to support, carrying both radial and axial loads inside the lower unit. Alloy steel construction gives the bearing the hardness and load capacity needed to handle the constant thrust and rotational stress generated inside a marine gearcase, where heat, vibration, and water-adjacent operating conditions place extra demand on components.\u003c\/p\u003e\u003cp\u003eThis bearing is a direct cross-reference for the OEM number listed below, so it installs as a like-for-like replacement without modification. It ships as a single bearing, ready to be pressed into place using standard bearing installation tools and packed with the gearcase lubricant already used in the unit. Because tapered roller bearings wear gradually with use, replacing a worn 18-1143 during a gearcase rebuild or seal service helps restore proper shaft alignment and reduce play in the lower unit.\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 18-1143\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Gearcase Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Tapered Roller Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lubricant:\u003c\/strong\u003e Grease\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.55 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999752277\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury outboard gearcase assemblies using the 18-1143 tapered roller bearing position\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e31-42647A1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-1143 tapered roller bearing fit?\u003c\/strong\u003e The 18-1143 is designed for the gearcase of Mercury outboard motors, where it supports the pinion and drive shaft assembly against radial and axial loads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-1143 a direct OEM replacement?\u003c\/strong\u003e Yes, Sierra 18-1143 is a direct cross-reference for OEM number 31-42647A1 and installs in place of that original bearing without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Sierra 18-1143 bearing?\u003c\/strong\u003e The 18-1143 tapered roller bearing measures 0.39 x 0.39 x 0.39 inches and weighs 0.55 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-1143 bearing made from?\u003c\/strong\u003e It is made from alloy steel, giving the 18-1143 the hardness needed to handle the thrust and rotational loads inside a marine gearcase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat lubricant should be used with the 18-1143 bearing?\u003c\/strong\u003e The Sierra 18-1143 is compatible with standard gearcase grease lubricant used during installation and ongoing service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-1143 is a genuine Sierra International part, manufactured to meet or exceed the specifications of the original equipment bearing it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the box with the 18-1143?\u003c\/strong\u003e Each order includes one Sierra 18-1143 tapered roller bearing; no additional hardware or seals are included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-1143 bearing installed?\u003c\/strong\u003e The 18-1143 is pressed into the gearcase housing using standard bearing installation tools, typically during a gearcase rebuild or seal replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does a tapered roller bearing like the 18-1143 need replacing?\u003c\/strong\u003e Tapered roller bearings wear gradually with use, and a worn 18-1143 can allow shaft play or misalignment inside the lower unit, making replacement necessary during a rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-1143 come with a warranty?\u003c\/strong\u003e The Sierra 18-1143 tapered roller bearing carries Sierra's limited warranty covering manufacturing defects.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988086862043,"sku":"SIE-18-1143","price":42.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/8M0146566__99585.1737872775.500.750.jpg?v=1785188597"},{"product_id":"sierra-18-1155-ball-bearing-for-mercury-outboard-gearcase-replaces-30-88957a1","title":"Sierra Ball Bearing 18-1155, Replaces Mercury Marine 30-88957A1, 30-88957T, for Counter Rotation Gearcase Applications","description":"\u003cp\u003eThis Sierra 18-1155 ball bearing is a gearcase bearing built for counter rotation outboard applications. It is manufactured from alloy steel for durability under the load and rotational demands of a lower unit gearcase, and it is finished in white. The bearing measures 0.39 x 0.39 x 0.39 inches and weighs 0.89 pounds, making it a compact precision component sized for direct fitment into the gearcase housing it was designed for.\u003c\/p\u003e\u003cp\u003eAs a Sierra-branded part, it is built to serve as a direct equivalent for the OEM Mercury Marine numbers it replaces, giving outboard owners and marine technicians a reliable option when rebuilding or servicing a counter rotation lower unit. Ball bearings like this one support the pinion and gear assembly inside the gearcase, keeping rotating components properly aligned and reducing friction and wear during operation. Because it is designated specifically for counter rotation applications, it is important to confirm that your outboard's gearcase is a counter rotation unit before ordering, since standard rotation gearcases use a different bearing.\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 18-1155\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Ball Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Counter Rotation Gearcase Applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.89 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999309303\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 30-88957A1, 30-88957T\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eFor counter rotation gearcase applications\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 30-88957A1\u003c\/li\u003e\n\u003cli\u003eMercury Marine 30-88957T\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-1155 bearing used for?\u003c\/strong\u003e The Sierra 18-1155 is a ball bearing used inside an outboard gearcase to support the pinion and gear assembly in counter rotation applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1155 fit a standard rotation gearcase?\u003c\/strong\u003e No. The 18-1155 is designated for counter rotation applications, so it should not be used in a standard rotation gearcase; confirm your gearcase rotation before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM numbers does the 18-1155 replace?\u003c\/strong\u003e It replaces Mercury Marine 30-88957A1 and 30-88957T, so either OEM number can be cross-referenced to Sierra part 18-1155.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-1155 ball bearing made from?\u003c\/strong\u003e It is made from alloy steel, giving it the strength needed to handle continuous rotation and load inside the gearcase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Sierra 18-1155 bearing?\u003c\/strong\u003e The 18-1155 measures 0.39 x 0.39 x 0.39 inches, a compact size built to fit precisely into its designated gearcase bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1155 bearing weigh?\u003c\/strong\u003e The Sierra 18-1155 ball bearing weighs 0.89 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1155 a genuine Sierra part or a knockoff?\u003c\/strong\u003e It is a genuine Sierra International branded ball bearing, part number 18-1155, not a generic substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-1155 bearing?\u003c\/strong\u003e The 18-1155 has a white finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-1155?\u003c\/strong\u003e Each order of the Sierra 18-1155 includes one ball bearing unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-1155 be identified by its UPC?\u003c\/strong\u003e Yes, the Sierra 18-1155 ball bearing carries UPC 030999309303 for identification and ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat lubricant is compatible with the 18-1155 bearing?\u003c\/strong\u003e The 18-1155 ball bearing is designed for use with grease as its compatible lubricant.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988086894811,"sku":"SIE-18-1155","price":44.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1155_lg__88277.1558121730.500.750.jpg?v=1785188717"},{"product_id":"sierra-18-1118-drive-shaft-tapered-roller-bearing-race-set-replaces-mercury-31-42677a1-mercury-mariner-outboard-gearcase","title":"Sierra 18-1118 Drive Shaft Tapered Roller Bearing for Mercury\/Mariner 100 HP (4 Cyl.) Outboards","description":"\u003cp\u003eThe Sierra 18-1118 is a tapered roller bearing designed to support the drive shaft in the gearcase of Mercury and Mariner outboard motors. This bearing is built as a direct-fit replacement for the drive shaft position in the lower unit, where it carries radial and thrust loads generated by the drive shaft as it transmits power from the powerhead down to the gearcase. Tapered roller bearings of this type are chosen for drive shaft applications because they handle combined axial and radial loads more effectively than ball bearings, which is important given the constant load reversals a drive shaft experiences during shifting and throttle changes.\u003c\/p\u003e\u003cp\u003eThe 18-1118 is intended for Mercury\/Mariner 100 hp (4 cylinder) outboards with serial number B209468 and up. It is lubricated with marine gearcase grease and is sized to fit the compact dimensions of the outboard's lower unit drive shaft bore. As a wear item inside the gearcase, this bearing is typically replaced during a gearcase rebuild, when a drive shaft is replaced, or when diagnosing gearcase noise or play that points to a worn bearing.\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 18-1118\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Drive Shaft Tapered Roller Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Tapered Roller Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lubricant:\u003c\/strong\u003e Grease\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.69 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999974259\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury\/Mariner 100 hp (4 cylinder) outboards, serial number B209468 and up\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-1118 used for?\u003c\/strong\u003e The Sierra 18-1118 is a tapered roller bearing that supports the drive shaft inside the gearcase of Mercury\/Mariner outboard motors, carrying the radial and thrust loads the drive shaft generates during operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboards does the 18-1118 fit?\u003c\/strong\u003e This bearing fits Mercury\/Mariner 100 hp (4 cylinder) outboards with serial number B209468 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-1118 a ball bearing or a roller bearing?\u003c\/strong\u003e It is a tapered roller bearing, which is better suited than a ball bearing to the combined radial and thrust loads a drive shaft puts on the gearcase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat lubricant should be used with this bearing?\u003c\/strong\u003e The Sierra 18-1118 is designed to run on marine gearcase grease as its compatible lubricant.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-1118 bearing?\u003c\/strong\u003e The Sierra 18-1118 measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1118 weigh?\u003c\/strong\u003e It weighs 0.69 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many bearings come in a package?\u003c\/strong\u003e The 18-1118 is sold as a single drive shaft bearing, one unit count per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this drive shaft bearing be replaced?\u003c\/strong\u003e A drive shaft bearing like the 18-1118 is typically replaced during a gearcase rebuild, when the drive shaft itself is replaced, or when gearcase noise or play indicates a worn bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1118 an OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-1118 is a Sierra-branded aftermarket drive shaft bearing made to fit the specified Mercury\/Mariner outboard application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1118 fit outboards below serial number B209468?\u003c\/strong\u003e No, the listed fitment for the 18-1118 is Mercury\/Mariner 100 hp (4 cylinder) units with serial number B209468 and up; earlier serial numbers are not covered by this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-1118?\u003c\/strong\u003e The UPC for the Sierra 18-1118 drive shaft bearing is 030999974259.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988086960347,"sku":"SIE-18-1118","price":39.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1118_lg__69818.1558120422.500.750.jpg?v=1785188444"},{"product_id":"sierra-18-1117-pinion-bearing-for-evinrude-johnson-outboard-gearcase-replaces-omc-387817-and-mercury-31-42647","title":"Sierra 18-1117 Pinion Bearing - Replaces OEM 31-42647A1","description":"\u003cp\u003eThe Sierra 18-1117 Pinion Bearing is a replacement gearcase pinion bearing built to meet or exceed original equipment quality. It is designed to support the pinion gear inside the lower unit gearcase, allowing smooth rotation and proper gear mesh under load. Made from alloy steel for durability under the heat and pressure generated inside a marine gearcase, the 18-1117 is sized to the same specification as the original part it replaces, so it seats and functions the same as OEM.\u003c\/p\u003e\u003cp\u003eThis is a small, precision-machined component measuring 0.39 x 0.39 x 0.39 inches, intended to be packed with marine gear lubricant during installation as part of a lower unit rebuild or gearcase service. Because pinion bearings are fit-specific, buyers should confirm the part number against their existing bearing or service manual before ordering, as gearcase hardware varies between models and years.\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 18-1117\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Pinion Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.41 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lubricant:\u003c\/strong\u003e Grease\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999974242\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e31-42647A1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-1117 pinion bearing fit?\u003c\/strong\u003e The Sierra 18-1117 is a direct cross reference for OEM pinion bearing 31-42647A1, so it fits gearcases originally built with that OEM bearing. Because fit is specific to the gearcase, confirm the OEM number on your existing bearing or in your service manual before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-1117 the same as OEM part 31-42647A1?\u003c\/strong\u003e Yes, Sierra 18-1117 replaces OEM number 31-42647A1 and is built to meet or exceed the quality of the original equipment part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-1117 pinion bearing made from?\u003c\/strong\u003e It is made from alloy steel, chosen for its strength and wear resistance under the load and heat inside a marine lower unit gearcase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-1117 pinion bearing?\u003c\/strong\u003e The bearing measures 0.39 x 0.39 x 0.39 inches, a compact size typical of a pinion gear support bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-1117 pinion bearing weigh?\u003c\/strong\u003e This bearing weighs 0.41 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat lubricant should be used with this pinion bearing?\u003c\/strong\u003e The Sierra 18-1117 pinion bearing is designed to run with marine gear grease as its compatible lubricant.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1117 genuine OEM or aftermarket?\u003c\/strong\u003e It is a Sierra aftermarket replacement bearing engineered to meet or exceed the specification of the original equipment part it replaces, rather than a part sourced from the original engine or drive manufacturer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-1117?\u003c\/strong\u003e Each order includes one Sierra 18-1117 pinion bearing; it does not include the pinion gear, pinion nut, or other gearcase hardware, which are separate part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if I need to replace my pinion bearing?\u003c\/strong\u003e A worn or failing pinion bearing typically shows as gearcase noise, play in the pinion gear, or visible pitting and roughness on the bearing surface during a lower unit teardown; the 18-1117 is used to replace the original bearing at that point.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-1117 come with an installation warranty?\u003c\/strong\u003e The 18-1117 pinion bearing carries a limited warranty as a Sierra replacement part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with the Sierra 18-1117 pinion bearing?\u003c\/strong\u003e The UPC for the Sierra 18-1117 pinion bearing is 030999974242.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988086993115,"sku":"SIE-18-1117","price":45.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1117_lg__43956.1558120350.500.750.jpg?v=1785188963"},{"product_id":"sierra-18-1350-carrier-bearing-aft-replaces-evinrude-johnson-omc-379504-glm-22860-outboard-gearcase-roller-bearing","title":"Sierra 18-1350 Lower Main Bearing, Replaces 433503, for V4 \u0026 V6 60 Degree Engines","description":"\u003cp\u003eThe Sierra 18-1350 is a lower main bearing built for V4 \u0026amp; V6 60 degree outboard engines. It is a roller-type bearing designed to support the crankshaft's lower main journal, and it uses grease as its compatible lubricant. As a direct replacement for OEM part 433503, it is manufactured to meet or exceed the specifications of the original equipment component it replaces, so it installs and performs the same as the part it is taking out.\u003c\/p\u003e\u003cp\u003eThis bearing is a compact, precision-machined component measuring roughly 0.39 x 0.39 x 0.39 inches, keeping it in line with the OEM footprint it is designed to fit into. It is intended for technicians and boat owners performing lower unit or powerhead rebuild work on V4 and V6 60 degree engine families, and it is sold as a single unit.\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 18-1350\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Lower Main Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Roller Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lubricant:\u003c\/strong\u003e Grease\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282236090\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 433503\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eV4 \u0026amp; V6 60 degree engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e433503\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-1350 fit?\u003c\/strong\u003e It is designed for V4 \u0026amp; V6 60 degree engines, matching the fitment specified for this lower main bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-1350 replace?\u003c\/strong\u003e The 18-1350 is a direct replacement for OEM part number 433503.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of bearing is the Sierra 18-1350?\u003c\/strong\u003e It is a roller-type bearing, specifically a lower main bearing used to support the crankshaft's lower main journal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow big is the Sierra 18-1350 bearing?\u003c\/strong\u003e The bearing measures approximately 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1350 weigh?\u003c\/strong\u003e This lower main bearing weighs 0.13 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat lubricant should be used with this bearing?\u003c\/strong\u003e Grease is the compatible lubricant for the Sierra 18-1350 lower main bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1350 genuine OEM or aftermarket?\u003c\/strong\u003e It is an aftermarket Sierra part manufactured to meet or exceed the specifications of OEM part 433503, which it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-1350 manufactured?\u003c\/strong\u003e The country of origin for this bearing is China.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1350 come as a single bearing or a kit?\u003c\/strong\u003e The Sierra 18-1350 is sold as a single lower main bearing unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-1350?\u003c\/strong\u003e The UPC associated with the Sierra 18-1350 lower main bearing is 808282236090.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087451867,"sku":"SIE-18-1350","price":19.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1350_lg__39837.1558121323.500.750.jpg?v=1785188468"},{"product_id":"sierra-18-1308-rod-bearing-std-replaces-mercruiser-23-85701-for-7-4l-454-gen-v-vi-engines","title":"Sierra 18-1308 Rod Bearing, Standard Size, Replaces Mercury Marine 23-85701, Fits 7.4L 454 MIE Gen V\/VI","description":"\u003cp\u003eThe Sierra 18-1308 is a standard-size connecting rod bearing engineered as a direct replacement for the original equipment bearing used in MerCruiser 7.4L MIE Gen V and Gen VI 454 cid V8 marine engines. Built from alloy steel, this bearing is manufactured to meet or exceed the quality of the original equipment part it replaces, giving rebuilders and engine shops a reliable option when servicing the bottom end of these V8 marine engines.\u003c\/p\u003e\u003cp\u003eEach 18-1308 bearing is sized at standard (Std.) tolerance, which is the baseline fit specified before any machining oversize is required. It is compatible with oil lubrication and is supplied as a single rod bearing, making it easy to order the exact quantity needed for a full engine rebuild or a partial bearing replacement job. Because it is a precision wear component, using the correct part number and size is essential to maintaining proper bearing clearance and engine longevity.\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 18-1308\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Rod Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e Standard (Std.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.14 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lubricant:\u003c\/strong\u003e Oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e MerCruiser 7.4L MIE Gen V and Gen VI 454 cid V8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 23-85701, 23-15961, 23-52221, 23-52270, F3910555, F3916351, FI1100305, FI1100570\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 7.4L MIE GEN V, 454 cid, 8 cylinder, 4 stroke, 1992-1995\u003c\/li\u003e\n\u003cli\u003eMerCruiser 7.4L MIE GEN V, 454 cid, 8 cylinder, 4 stroke, 1992-1996\u003c\/li\u003e\n\u003cli\u003eMerCruiser 7.4L MIE GEN VI, 454 cid, 8 cylinder, 4 stroke, 1996-1997\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e23-85701\u003c\/li\u003e\n\u003cli\u003e23-15961\u003c\/li\u003e\n\u003cli\u003e23-52221\u003c\/li\u003e\n\u003cli\u003e23-52270\u003c\/li\u003e\n\u003cli\u003eF3910555\u003c\/li\u003e\n\u003cli\u003eF3916351\u003c\/li\u003e\n\u003cli\u003eFI1100305\u003c\/li\u003e\n\u003cli\u003eFI1100570\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-1308 rod bearing fit?\u003c\/strong\u003e The Sierra 18-1308 is designed for MerCruiser 7.4L MIE Gen V and Gen VI 454 cid V8 marine engines, covering 1992-1995, 1992-1996, and 1996-1997 production.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-1308 a standard size or an oversize bearing?\u003c\/strong\u003e It is a standard (Std.) size rod bearing, meaning no machining oversize is required for installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does the 18-1308 cross-reference to?\u003c\/strong\u003e The 18-1308 replaces OEM numbers 23-85701, 23-15961, 23-52221, 23-52270, F3910555, F3916351, FI1100305, and FI1100570.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-1308 rod bearing made from?\u003c\/strong\u003e This bearing is made from alloy steel, matching the material used in the original equipment rod bearing it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many bearings come in one 18-1308 unit?\u003c\/strong\u003e Each 18-1308 is sold as a single rod bearing, so the quantity needed depends on how many bearings the engine rebuild requires.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-1308?\u003c\/strong\u003e The 18-1308 measures 0.39 x 0.39 x 0.39 inches and weighs 0.14 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1308 meet original equipment quality standards?\u003c\/strong\u003e Yes, the Sierra 18-1308 rod bearing is manufactured to meet or exceed the quality of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat lubricant should be used with the 18-1308 bearing?\u003c\/strong\u003e The 18-1308 rod bearing is designed for use with oil lubrication, as is standard for connecting rod bearings in these engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-1308 be used for a full engine rebuild?\u003c\/strong\u003e Yes, the 18-1308 is part of a complete engine bearing lineup and can be ordered in the quantity needed for a full rod bearing replacement during an engine rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 18-1308 and an oversize bearing like the 18-1309?\u003c\/strong\u003e The 18-1308 is the standard size bearing, while other part numbers in the same lineup are machined to specific oversizes for engines that have had their crankshaft journals reground; the correct size depends on the engine's current specification.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087517403,"sku":"SIE-18-1308","price":12.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1308_lg__31779.1558122693.500.750.jpg?v=1785188881"},{"product_id":"sierra-18-1361-rod-crank-end-bearing-replaces-omc-387787-fits-johnson-evinrude-omc-brp-outboards","title":"Sierra 18-1361 Rod Crank End Bearing - Replaces OMC\/Evinrude-Johnson 387787","description":"\u003cp\u003eThe Sierra 18-1361 is a rod crank end bearing engineered for outboard powerhead rebuilds, replacing the original equipment connecting rod bearing used on Evinrude\/Johnson (OMC) outboard engines. This bearing rides at the crank end of the connecting rod, supporting the rotating assembly where the rod journals onto the crankshaft, and is a standard wear item during a lower-end or powerhead overhaul. Each Sierra bearing is manufactured to meet or exceed the quality of the original equipment part it replaces, making it a direct fit for machinists and technicians rebuilding OMC-based powerheads.\u003c\/p\u003e\u003cp\u003eThe 18-1361 is precision machined to close tolerances required for proper crankshaft clearance and smooth rotation. Because rod bearings are fit-specific to the engine and rod journal size, always confirm the OE part number your engine originally used before ordering. This bearing is sold to replace OMC\/Evinrude-Johnson part number 387787.\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 18-1361\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Rod Crank End\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity per Application:\u003c\/strong\u003e 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.12 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\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282243128\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eDesigned to replace the connecting rod crank end bearing used on Evinrude\/Johnson (OMC) outboard powerheads originally fitted with OMC part number 387787\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOMC\/Evinrude-Johnson 387787\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-1361 bearing replace?\u003c\/strong\u003e The Sierra 18-1361 replaces OMC\/Evinrude-Johnson connecting rod bearing number 387787 at the crank end of the connecting rod.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-1361 bearing?\u003c\/strong\u003e The 18-1361 rod crank end bearing measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1361 bearing weigh?\u003c\/strong\u003e It weighs 0.12 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many bearings are needed per engine?\u003c\/strong\u003e The 18-1361 rod crank end bearing is used in a quantity of 4 per application on the powerhead it fits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1361 an OEM part or aftermarket?\u003c\/strong\u003e The 18-1361 is a Sierra aftermarket bearing manufactured to meet or exceed the quality of the original OMC\/Evinrude-Johnson 387787 bearing it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the rod crank end bearing located on the engine?\u003c\/strong\u003e The rod crank end bearing sits at the crankshaft-side end of the connecting rod, supporting the rod as it rotates around the crank journal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-1361 on any outboard engine?\u003c\/strong\u003e No, rod crank end bearings are fit specific. Confirm your engine originally used OMC\/Evinrude-Johnson part 387787 before ordering the Sierra 18-1361.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the 18-1361 bearing have?\u003c\/strong\u003e The Sierra 18-1361 has a machined exterior finish for precise fit against the crank journal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-1361 still available from the manufacturer?\u003c\/strong\u003e Yes, the Sierra 18-1361 rod crank end bearing is a current, non-discontinued part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-1361?\u003c\/strong\u003e Ordering the Sierra 18-1361 provides one rod crank end bearing; a full engine rebuild application typically requires 4 of these bearings.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087550171,"sku":"SIE-18-1361","price":65.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1361_lg__94099.1558121879.500.750.jpg?v=1785188296"},{"product_id":"reverse-gear-thrust-bearing-18-1363-for-evinrude-johnson-outboard-gearcase-replaces-omc-332514","title":"Sierra Thrust Bearing 18-1363 for Evinrude Outboard Gearcases","description":"\u003cp\u003eThe Sierra Thrust Bearing 18-1363 is a replacement gearcase bearing designed for Evinrude outboard motors. Thrust bearings absorb the axial load generated by the propeller shaft as it pushes against the gearcase during operation, keeping the shaft properly positioned and preventing excessive wear on surrounding gearcase components. As the gearcase turns power from the drive shaft into thrust at the propeller, this bearing manages the forward and reverse loading that would otherwise be transferred directly into the housing.\u003c\/p\u003e\u003cp\u003eThis part is built to the same fit and function as the original equipment it replaces, making it a straightforward drop-in choice when servicing or rebuilding an Evinrude outboard gearcase. Because thrust bearings see continuous load whenever the engine is in gear, they are a common wear item to inspect and replace during a gearcase overhaul, especially if you're already into the lower unit for a seal, bearing carrier, or gear set replacement.\u003c\/p\u003e\u003cp\u003eThe Sierra Thrust Bearing 18-1363 is compact and lightweight at 0.04 pounds, consistent with its role as a small internal gearcase component rather than an externally visible 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 18-1363\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thrust Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Evinrude outboard gearcase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282243142\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-1363 thrust bearing do inside an outboard gearcase?\u003c\/strong\u003e It absorbs the axial (forward and reverse) load from the propeller shaft, keeping the shaft aligned and preventing that load from wearing directly on the gearcase housing. The Sierra Thrust Bearing 18-1363 is fitted into the gearcase to handle this thrust load.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1363 a genuine Sierra part or aftermarket?\u003c\/strong\u003e 18-1363 is Sierra's own part number for this thrust bearing, so it is sold as a genuine Sierra replacement part rather than a third-party aftermarket copy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-1363 thrust bearing weigh?\u003c\/strong\u003e The Sierra Thrust Bearing 18-1363 weighs 0.04 pounds, reflecting its size as a small internal gearcase bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboard brand is the 18-1363 thrust bearing designed for?\u003c\/strong\u003e This thrust bearing is designed for Evinrude outboard gearcases, part number 18-1363.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should a thrust bearing like the 18-1363 be replaced?\u003c\/strong\u003e A thrust bearing typically warrants replacement any time a gearcase is opened for service and the bearing shows wear, pitting, or play, since it carries continuous load whenever the outboard is in gear. Many owners replace the 18-1363 proactively during a full gearcase rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install the Sierra 18-1363 thrust bearing myself?\u003c\/strong\u003e Installing a gearcase thrust bearing requires disassembling the lower unit to access the propeller shaft and bearing carrier, so it is best done by someone comfortable with outboard gearcase service or a qualified marine mechanic.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-1363 come with installation hardware or seals?\u003c\/strong\u003e The 18-1363 is the thrust bearing itself; the dossier does not list additional seals or hardware bundled with this part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with the Sierra 18-1363 thrust bearing?\u003c\/strong\u003e The Sierra Thrust Bearing 18-1363 carries UPC 808282243142.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would my outboard need a new thrust bearing?\u003c\/strong\u003e Worn thrust bearings can allow excess play in the propeller shaft, leading to noise, vibration, or accelerated wear on other gearcase parts, which is why the 18-1363 is a common inspection point during gearcase service on Evinrude outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-1363 the correct part number to search for this bearing?\u003c\/strong\u003e Yes, 18-1363 is the Sierra part number to reference when ordering this specific Evinrude outboard gearcase thrust bearing.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087582939,"sku":"SIE-18-1363","price":11.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1363_lg__59954.1558121941.500.750.jpg?v=1785329187"},{"product_id":"sierra-18-1351-carrier-bearing-forward-outer-replaces-omc-evinrude-333725-evinrude-johnson-outboard-gearcase","title":"Sierra 18-1351 Carrier Bearing for Evinrude Outboard Gearcase - Replaces GLM 22870, OMC\/Evinrude Johnson 382407","description":"\u003cp\u003eThe Sierra 18-1351 Carrier Bearing is a roller-type carrier bearing built for Evinrude outboard gearcase applications. It is manufactured to meet or exceed the original equipment part it replaces, giving boat owners a reliable, precision-fit alternative to the factory bearing. The 18-1351 supports smooth rotation and proper alignment within the gearcase, helping protect downstream driveline components from excess play or vibration when the original bearing has worn out.\u003c\/p\u003e\u003cp\u003eCompact and lightweight, the bearing measures 0.39 x 0.39 x 0.39 inches and weighs just 0.19 pounds, shipping in a 5.13 x 4.0 x 1.25 inch package. It is made in the United States and directly interchanges with GLM 22870 and 382407 (used by both Evinrude\/Johnson and OMC), making it a straightforward drop-in replacement for gearcase rebuilds and maintenance on Evinrude outboard 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 18-1351\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Roller Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Evinrude Outboard Gearcase Bearings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 inches x 0.39 inches x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 5.13 inches x 4.0 inches x 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.19 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282243067\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e GLM 22870, 382407\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Evinrude outboard gearcase applications.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 22870\u003c\/li\u003e\n\u003cli\u003e382407 (Evinrude\/Johnson, OMC)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM parts does the Sierra 18-1351 Carrier Bearing replace?\u003c\/strong\u003e It replaces GLM 22870 and 382407, the same part number used by both Evinrude\/Johnson and OMC, so it is a direct interchange for any of those references.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of bearing is the 18-1351?\u003c\/strong\u003e The Sierra 18-1351 is a roller bearing, designed for smooth rotational support inside the gearcase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this bearing?\u003c\/strong\u003e The Sierra 18-1351 Carrier Bearing itself measures 0.39 x 0.39 x 0.39 inches and ships in a package measuring 5.13 x 4.0 x 1.25 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1351 weigh?\u003c\/strong\u003e It weighs 0.19 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-1351 manufactured?\u003c\/strong\u003e The country of origin listed for this bearing is the United States.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is this bearing used on?\u003c\/strong\u003e The Sierra 18-1351 is categorized as an Evinrude outboard gearcase bearing, intended for use in Evinrude outboard gearcase assemblies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1351 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is manufactured by Sierra to meet or exceed the specifications of the original equipment part it replaces, functioning as a direct aftermarket equivalent to GLM 22870 and 382407.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order this bearing?\u003c\/strong\u003e You receive one Sierra 18-1351 Carrier Bearing; no additional hardware or components are included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre OMC 382407 and Evinrude\/Johnson 382407 the same part?\u003c\/strong\u003e Yes, 382407 is the same OEM number used by both OMC and Evinrude\/Johnson, and the Sierra 18-1351 replaces it under either designation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-1351 interchange with GLM 22870?\u003c\/strong\u003e Yes, GLM 22870 is one of the OEM numbers this carrier bearing directly replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with the Sierra 18-1351?\u003c\/strong\u003e The UPC for this carrier bearing is 808282243067.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087615707,"sku":"SIE-18-1351","price":25.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1351_lg__47364.1558121381.500.750.jpg?v=1785188039"},{"product_id":"sierra-18-1368-driveshaft-thrust-bearing-for-johnson-evinrude-outboards-replaces-omc-398901","title":"Sierra 18-1368 Thrust Bearing, Replaces OMC 398901, for Johnson\/Evinrude Outboard Motors","description":"\u003cp\u003eThe Sierra 18-1368 is a marine thrust bearing engineered for Johnson\/Evinrude outboard motors, built to meet or exceed original equipment quality. The thrust bearing is a gearcase component that manages axial load on the propeller shaft, helping the lower unit run smoothly and protecting the gearcase from premature wear. Sierra manufactures this bearing to OEM specification, making it a direct equivalent for the original part rather than a generalized substitute.\u003c\/p\u003e\u003cp\u003eThis is a compact, precision component measuring 0.75 x 4 x 5.12 inches and weighing 0.03 pounds, sized to fit into the Johnson\/Evinrude gearcase exactly as the original bearing does. It is compatible with grease lubrication, consistent with standard outboard gearcase service practice. Because it is held to OEM specification, installation follows the same procedure as replacing the factory thrust bearing, with no modification required.\u003c\/p\u003e\u003cp\u003eThe Sierra 18-1368 is intended for outboard owners and marine technicians performing gearcase rebuilds or replacing a worn or damaged thrust bearing on Johnson\/Evinrude outboard motors. It cross-references directly to GLM 16370 and OMC\/Evinrude\/Johnson 398901, so buyers can confirm fit against the original part number before 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 18-1368\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Thrust Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Thrust Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification Met:\u003c\/strong\u003e OEM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lubricant:\u003c\/strong\u003e Grease\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions (L x W x H):\u003c\/strong\u003e 0.75 x 4 x 5.12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e GLM 16370, OMC 398901\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude outboard motors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 16370\u003c\/li\u003e\n\u003cli\u003eOMC 398901\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-1368 thrust bearing fit?\u003c\/strong\u003e The Sierra 18-1368 is designed for Johnson\/Evinrude outboard motors as a gearcase thrust bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1368 the same as OMC 398901?\u003c\/strong\u003e Yes, the Sierra 18-1368 cross-references directly to OMC\/Evinrude\/Johnson 398901, so it is a direct equivalent for that original part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-1368 cross-reference to a GLM part number?\u003c\/strong\u003e It does, the Sierra 18-1368 is interchangeable with GLM 16370.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-1368 thrust bearing?\u003c\/strong\u003e It measures 0.75 x 4 x 5.12 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-1368 thrust bearing weigh?\u003c\/strong\u003e The Sierra 18-1368 weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1368 built to OEM specification?\u003c\/strong\u003e Yes, Sierra manufactures the 18-1368 thrust bearing to meet or exceed original equipment quality.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat lubricant should be used with the Sierra 18-1368?\u003c\/strong\u003e The Sierra 18-1368 thrust bearing is compatible with grease lubrication.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when ordering the Sierra 18-1368?\u003c\/strong\u003e The package includes one thrust bearing, part number 18-1368.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-1368 is a genuine Sierra-manufactured thrust bearing, produced to OEM specification for Johnson\/Evinrude outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to replace this thrust bearing?\u003c\/strong\u003e A gearcase thrust bearing like the Sierra 18-1368 is typically replaced during a lower unit rebuild or when the original bearing is worn or damaged.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087648475,"sku":"SIE-18-1368","price":15.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1368_lg__37726.1558122245.500.750.jpg?v=1785188702"},{"product_id":"sierra-18-1374-wrist-pin-bearing-replaces-evinrude-johnson-395627-omc-outboard","title":"Sierra 18-1374 Wrist Pin Bearing for Evinrude\/Johnson Outboards, Replaces OMC 395627","description":"\u003cp\u003eThe Sierra 18-1374 is a wrist pin bearing built for Evinrude\/Johnson outboard powerhead rebuilds. It sits at the connecting rod's wrist pin location and is manufactured with a machined finish for a precise, consistent fit. Sierra engineers this bearing to meet or exceed the quality of the original equipment part it replaces, giving rebuilders a reliable alternative to sourcing a discontinued or hard-to-find OE component.\u003c\/p\u003e\u003cp\u003eThe 18-1374 cross references directly to OMC\/Evinrude-Johnson part number 395627, as well as GLM 16220, Mallory 9-51103, and Wiseco W5217, so it can be ordered against any of those interchange numbers. Each engine application uses four of these wrist pin bearings, and Sierra groups this part alongside related bearings for the same connecting rod and crankshaft assembly, including the 18-1353 center main bearing, 18-1395 lower crankshaft bearing, and 18-1361 rod crank end bearing, which are commonly serviced together during a full powerhead rebuild.\u003c\/p\u003e\u003cp\u003eAt just 0.39 x 0.39 x 0.39 inches and 0.07 pounds, the 18-1374 is a small but critical wear component. Installing it correctly requires disassembling the connecting rod and piston, so it is typically handled during a complete engine teardown rather than as a standalone repair.\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 18-1374\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Wrist Pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOE Number:\u003c\/strong\u003e 395627\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Required Per Engine:\u003c\/strong\u003e 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.07 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\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282241322\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e OMC\/Evinrude-Johnson 395627, GLM 16220, Mallory 9-51103, Wiseco W5217\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eEvinrude\/Johnson outboard connecting rod applications using OE wrist pin bearing 395627.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e395627\u003c\/li\u003e\n\u003cli\u003eGLM 16220\u003c\/li\u003e\n\u003cli\u003eMallory 9-51103\u003c\/li\u003e\n\u003cli\u003eWiseco W5217\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-1374 wrist pin bearing replace?\u003c\/strong\u003e It directly cross references OMC\/Evinrude-Johnson part number 395627, GLM 16220, Mallory 9-51103, and Wiseco W5217.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich engines use the 18-1374 wrist pin bearing?\u003c\/strong\u003e This bearing is built for Evinrude\/Johnson outboard connecting rod applications that call for OE wrist pin bearing 395627.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many 18-1374 bearings does one engine need?\u003c\/strong\u003e Four wrist pin bearings are required per engine, one for each connecting rod's wrist pin location.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions and weight of the Sierra 18-1374?\u003c\/strong\u003e The bearing measures 0.39 x 0.39 x 0.39 inches and weighs 0.07 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-1374 wrist pin bearing made of?\u003c\/strong\u003e Sierra machines this bearing to meet or exceed the quality of the original OMC\/Evinrude-Johnson equipment it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install the Sierra 18-1374 myself?\u003c\/strong\u003e Installing part 18-1374 requires disassembling the connecting rod and piston, so it is normally done during a full powerhead rebuild rather than a quick swap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1374 the same as the 18-1376 wrist pin bearing?\u003c\/strong\u003e No, they are different parts: 18-1374 cross references OE number 395627 at a quantity of 4 per engine, while 18-1376 cross references OE number 434844 at a quantity of 6 per engine for a different application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1374 genuine OEM or aftermarket?\u003c\/strong\u003e The 18-1374 is an aftermarket Sierra bearing engineered to meet or exceed original equipment specifications, not a Genuine OMC\/Evinrude part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-1374 wrist pin bearing?\u003c\/strong\u003e The UPC for Sierra part 18-1374 is 808282241322.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-1374 need to be replaced along with other bearings?\u003c\/strong\u003e The 18-1374 wrist pin bearing is grouped with other bearings for the same connecting rod and crankshaft assembly, including the 18-1353 center main bearing, 18-1395 lower crankshaft bearing, and 18-1361 rod crank end bearing, which are commonly replaced together during a rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1374 compatible with Wiseco connecting rods?\u003c\/strong\u003e Yes, part 18-1374 cross references to Wiseco W5217, making it usable in applications that specify that number.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087681243,"sku":"SIE-18-1374","price":23.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1374_lg__49210.1558122496.500.750.jpg?v=1785188315"},{"product_id":"sierra-18-1365-pinion-thrust-bearing-replaces-omc-evinrude-johnson-327656-outboard-gearcase-ref-23","title":"Sierra 18-1365 Thrust Bearing - Replaces OMC\/Evinrude\/Johnson 387656, 383248, GLM 16330","description":"\u003cp\u003eThe Sierra 18-1365 Thrust Bearing is a gearcase thrust bearing built to meet or exceed the specifications of the original equipment part it replaces. It is designed as a direct interchange for outboard gearcase applications that call for GLM 16330 or Evinrude\/Johnson\/OMC 387656 and 383248, giving boat owners and repair shops a reliable aftermarket option when servicing the lower unit. The bearing is compact, measuring 0.39 x 0.39 x 0.39 inches, and is intended to be packed with marine grease before installation to support proper lubrication and load distribution during operation.\u003c\/p\u003e\u003cp\u003eAs a thrust bearing, its job is to absorb axial (thrust) loads within the gearcase, keeping rotating components properly positioned under the forces generated by propeller thrust and gear engagement. Each Sierra 18-1365 unit is manufactured to consistent quality standards so it installs and performs like the original equipment bearing it is replacing. It ships as a single bearing (unit count of 1), making it a straightforward part to keep on hand for gearcase rebuilds or as a stocked spare.\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 18-1365\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thrust Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lubricant:\u003c\/strong\u003e Grease\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 16330, Evinrude\/Johnson 387656, 383248, OMC 387656\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for use in outboard gearcase applications that specify GLM 16330 or Evinrude\/Johnson\/OMC 387656 and 383248 thrust bearings. Confirm your existing bearing number before ordering.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 16330\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 387656\u003c\/li\u003e\n\u003cli\u003e383248\u003c\/li\u003e\n\u003cli\u003eOMC 387656\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-1365 used for?\u003c\/strong\u003e It is a thrust bearing used inside an outboard gearcase to absorb axial thrust loads from the propeller shaft and gear set, keeping the rotating assembly properly positioned during operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1365 a direct replacement for my OEM bearing?\u003c\/strong\u003e Yes, the 18-1365 is interchangeable with GLM 16330 and Evinrude\/Johnson\/OMC 387656 and 383248, so it can be used as a direct replacement for gearcases originally fitted with any of those bearing numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Sierra 18-1365 thrust bearing?\u003c\/strong\u003e The 18-1365 measures 0.39 x 0.39 x 0.39 inches and weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1365 come pre-greased or do I need to add lubricant?\u003c\/strong\u003e The Sierra 18-1365 thrust bearing is compatible with grease lubrication; it should be packed with marine grease during installation per standard gearcase rebuild practice.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many bearings come in a Sierra 18-1365 package?\u003c\/strong\u003e Each package contains one Sierra 18-1365 thrust bearing (unit count of 1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill Sierra 18-1365 meet the same quality as the original OMC or Evinrude bearing?\u003c\/strong\u003e The 18-1365 is manufactured to meet or exceed the quality of the original equipment part it replaces, including OMC and Evinrude\/Johnson 387656 and 383248 applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs GLM 16330 the same bearing as Sierra 18-1365?\u003c\/strong\u003e GLM 16330 is one of the cross-reference numbers for the Sierra 18-1365, meaning the two are interchangeable for the same gearcase application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the Sierra 18-1365 be used for a gearcase rebuild?\u003c\/strong\u003e Yes, the 18-1365 thrust bearing is commonly installed during gearcase rebuilds anywhere the original GLM 16330 or OMC\/Evinrude 387656 or 383248 bearing is specified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if I need the 18-1365 thrust bearing instead of another Sierra bearing?\u003c\/strong\u003e Check the bearing number stamped on your existing part or your gearcase parts diagram; the 18-1365 is the correct replacement specifically for applications listing GLM 16330 or Evinrude\/Johnson\/OMC 387656 and 383248.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1365 an aftermarket or genuine OEM part?\u003c\/strong\u003e The 18-1365 is a Sierra aftermarket thrust bearing engineered to meet or exceed OEM specifications for the OMC, Evinrude, and Johnson bearings it cross-references.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087845083,"sku":"SIE-18-1365","price":41.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1365_lg__41422.1558122082.500.750.jpg?v=1785188003"},{"product_id":"sierra-18-1364-forward-gear-thrust-bearing-for-johnson-evinrude-outboards-replaces-omc-397627","title":"Sierra 18-1364 Thrust Bearing for Johnson\/Evinrude Outboard Gearcase, Replaces OMC 397538","description":"\u003cp\u003eThe Sierra 18-1364 Thrust Bearing is a replacement gearcase bearing built for Johnson\/Evinrude outboard motors. It is designed to meet or exceed original equipment quality, giving you a reliable OEM-equivalent option when your gearcase bearing needs replacing due to wear or failure. The bearing is constructed of rubber and is classified as a roller bearing, intended to run with grease as the compatible lubricant. Its compact size, 0.39 x 0.39 x 0.39 inches, makes it a small but essential component within the lower unit assembly, supporting proper shaft alignment and reducing friction under load.\u003c\/p\u003e\u003cp\u003eThis thrust bearing is a direct cross-reference to OMC 397538 and GLM 16360, so it can be used to service outboards originally fitted with those parts. Because it is a wear component in the gearcase, it is commonly replaced during lower unit rebuilds, seal replacements, or general outboard maintenance. Ordering the correct part number, 18-1364, ensures proper fit and function within the gearcase assembly.\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 18-1364\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Thrust Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Roller Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.08 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lubricant:\u003c\/strong\u003e Grease\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 397538, GLM 16360\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude outboard motors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e397538\u003c\/li\u003e\n\u003cli\u003eGLM 16360\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-1364 Thrust Bearing used for?\u003c\/strong\u003e The Sierra 18-1364 is a thrust bearing used in the gearcase of Johnson\/Evinrude outboard motors, supporting shaft alignment and reducing friction under load.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1364 thrust bearing replace OMC 397538?\u003c\/strong\u003e Yes, the Sierra 18-1364 is a direct cross-reference for OMC 397538.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1364 the same as GLM 16360?\u003c\/strong\u003e GLM 16360 is listed as an equivalent cross-reference number to the Sierra 18-1364 thrust bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-1364 thrust bearing?\u003c\/strong\u003e The Sierra 18-1364 thrust bearing measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1364 thrust bearing weigh?\u003c\/strong\u003e This thrust bearing weighs 0.08 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-1364 thrust bearing made of?\u003c\/strong\u003e The 18-1364 is made of rubber and is classified as a roller bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat lubricant should be used with the 18-1364 thrust bearing?\u003c\/strong\u003e Grease is the compatible lubricant for the Sierra 18-1364 thrust bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1364 an OEM-quality part?\u003c\/strong\u003e The Sierra 18-1364 thrust bearing is built to meet or exceed original equipment quality standards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboard motors use the 18-1364 thrust bearing?\u003c\/strong\u003e The 18-1364 thrust bearing is designed for Johnson\/Evinrude outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when ordering part number 18-1364?\u003c\/strong\u003e Ordering 18-1364 includes one Sierra thrust bearing for the outboard gearcase.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087877851,"sku":"SIE-18-1364","price":11.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1364_lg__99731.1558121987.500.750.jpg?v=1785189093"},{"product_id":"sierra-18-1402-marine-hydraulic-lifter-replaces-mercury-72638-fits-mercruiser-gm-2-5l-120-3-0l-140-engines","title":"Sierra 18-1402 Marine Hydraulic Lifter - Replaces 3854033, 502036 - OMC \u0026 Volvo Penta 3.0L\/181 CID","description":"\u003cp\u003eThe Sierra 18-1402 is a marine hydraulic lifter engineered as a direct replacement for OMC and Volvo Penta 3.0L\/181 CID engines, as well as GM 2.5L\/120 marine engines. Hydraulic lifters sit between the camshaft and pushrod, automatically taking up clearance in the valvetrain so valve lash stays correctly adjusted as the engine heats up and components wear. This self-adjusting action keeps valve operation quiet and consistent without manual lash adjustment, which is critical in a marine engine that runs at sustained loads and varying temperatures.\u003c\/p\u003e\u003cp\u003eThe 18-1402 is a genuine cross-reference match for OEM lifter numbers 3854033 and 502036, meaning it is built to the same fit, form, and function as those original components. It is intended for engine rebuilds, top-end refreshes, or replacing a worn or noisy lifter in engines covered by its listed fitment. Because hydraulic lifters wear as a set and affect valvetrain timing directly, installing correctly cross-referenced replacements like the 18-1402 helps maintain proper engine performance and valve life.\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 18-1402\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Hydraulic Lifter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e GM 2.5L\/120; OMC \u0026amp; Volvo Penta 3.0L\/181 CID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 3854033, 502036\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.26 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 1 x 1 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999974761\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGM 2.5L\/120 marine engines\u003c\/li\u003e\n\u003cli\u003eOMC \u0026amp; Volvo Penta 3.0L\/181 CID engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3854033\u003c\/li\u003e\n\u003cli\u003e502036\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-1402 hydraulic lifter fit?\u003c\/strong\u003e The Sierra 18-1402 fits GM 2.5L\/120 marine engines as well as OMC and Volvo Penta 3.0L\/181 CID engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-1402 replace?\u003c\/strong\u003e This lifter replaces OEM numbers 3854033 and 502036, making it a direct cross-reference for those original parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1402 a hydraulic or solid lifter?\u003c\/strong\u003e It is a hydraulic lifter, which self-adjusts to take up valvetrain clearance rather than requiring manual lash adjustment like a solid lifter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1402 lifter weigh?\u003c\/strong\u003e The Sierra 18-1402 hydraulic lifter weighs 0.26 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-1402?\u003c\/strong\u003e The Sierra 18-1402 measures 1 x 1 x 1 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this lifter fit a Volvo Penta 3.0L engine?\u003c\/strong\u003e Yes, the 18-1402 is listed to fit OMC and Volvo Penta 3.0L\/181 CID engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-1402 in a GM 2.5L marine engine?\u003c\/strong\u003e Yes, the Sierra 18-1402 is fitted for GM 2.5L\/120 marine engines in addition to the OMC and Volvo Penta 3.0L\/181 CID application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo hydraulic lifters like the 18-1402 need periodic adjustment?\u003c\/strong\u003e No, hydraulic lifters such as the 18-1402 automatically compensate for valvetrain clearance and do not require manual lash adjustment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1402 an OEM or aftermarket part?\u003c\/strong\u003e The 18-1402 is an aftermarket Sierra part cross-referenced to OEM numbers 3854033 and 502036 for the same fit and function.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many lifters are needed for a full engine rebuild?\u003c\/strong\u003e The dossier for the Sierra 18-1402 does not specify a total quantity per engine; check your engine's cylinder count and lifter layout to determine how many are needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate a hydraulic lifter like the 18-1402 needs replacing?\u003c\/strong\u003e Common signs include valvetrain noise or ticking, which a properly functioning hydraulic lifter such as the 18-1402 is designed to eliminate by maintaining correct valve clearance.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088402139,"sku":"SIE-18-1402","price":20.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1402_lg__70582.1558120303.500.750.jpg?v=1785189198"},{"product_id":"sierra-18-2138-pivot-pin-bearing-replaces-omc-911787-fits-omc-cobra-sterndrive-2-per-drive","title":"Sierra International 18-2138 Pivot Pin Bearing, Replaces OMC\/Volvo Penta 911787","description":"\u003cp\u003eThe Sierra International 18-2138 is a machined pivot pin bearing used in gimbal housing and U-joint assemblies. It is a direct replacement for the OEM bearing found in these assemblies and is built to the same fit and function as the original part it replaces. The bearing has a compact, precise profile designed to seat correctly in the pivot pin bore, allowing smooth articulation of the gimbal ring or U-joint during steering and trim movement.\u003c\/p\u003e\u003cp\u003eThis bearing is finished in white and features a machined construction for consistent, repeatable fit. It is a small, lightweight component at just 0.02 pounds, and the original equipment application calls for three of these bearings per gimbal housing, so most rebuilds require replacing the full set rather than a single unit. The 18-2138 is commonly stocked alongside related gimbal-bearing service parts such as oil seals and foam seals used in the same housing.\u003c\/p\u003e\u003cp\u003eBecause gimbal and U-joint bearings see constant flexing and exposure to grease, water intrusion, and load from steering and shifting, worn or pitted bearings are a common source of play, vibration, or steering stiffness in stern drive units. Replacing the 18-2138 as part of a gimbal bearing service restores proper pivot action and helps prevent premature wear on the pivot pin itself.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra International\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2138\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Pivot Pin Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\/Finish:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Machined\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\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Used Per Application:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999311528\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e911787\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2138 pivot pin bearing replace?\u003c\/strong\u003e The 18-2138 replaces OEM number 911787, the bearing used in the gimbal housing and U-joint pivot pin assembly it is designed for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of these bearings does one gimbal housing use?\u003c\/strong\u003e Three 18-2138 bearings are used per gimbal housing in the original application, so a full bearing service typically requires replacing all three rather than a single unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2138 a genuine Sierra part or aftermarket?\u003c\/strong\u003e It is a Sierra International part, sold under Sierra's own part number 18-2138 as a direct-fit replacement bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the 18-2138 bearing?\u003c\/strong\u003e The bearing measures 0.39 x 0.39 x 0.39 inches, a compact size intended to seat directly in the pivot pin bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2138 pivot pin bearing weigh?\u003c\/strong\u003e It weighs 0.02 pounds, reflecting its small, compact bearing design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-2138 bearing made of or finished with?\u003c\/strong\u003e The 18-2138 has a machined construction with a white finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat other parts are typically replaced along with the 18-2138 bearing?\u003c\/strong\u003e Gimbal housing rebuilds that use the 18-2138 pivot pin bearing often also involve replacing related oil seals and foam seals in the same housing, since all of these wear from the same water and grease exposure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would a pivot pin bearing need to be replaced?\u003c\/strong\u003e Worn or pitted pivot pin bearings, such as the 18-2138, are a common cause of play, vibration, or stiffness in gimbal and U-joint steering movement, so replacing them restores proper articulation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2138 come as a single bearing or a set?\u003c\/strong\u003e The 18-2138 is supplied as an individual bearing; since the application uses three per housing, buyers needing a full rebuild should order the quantity needed for their assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the OEM number 911787 the only cross-reference for this bearing?\u003c\/strong\u003e 911787 is the confirmed OEM cross-reference number for the Sierra 18-2138 pivot pin bearing.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988092268763,"sku":"SIE-18-2138","price":15.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2138_lg__00111.1558122293.500.750.jpg?v=1785188138"},{"product_id":"sierra-18-2193-rear-engine-mount-replaces-mercury-99297a1-fits-mercruiser-120-140-320-hp-350-454-magnum-alpha-bravo","title":"Sierra 18-2193 Rear Engine Mount, Replaces Mercury Marine 99297A1, Fits Alpha and Bravo Drives","description":"\u003cp\u003eThe Sierra 18-2193 Rear Engine Mount is a machined rear engine mount built to support MerCruiser sterndrive engines through the rear of the flywheel housing. It is engineered as a direct replacement for the OEM rear mount, providing the correct mounting interface for engines paired with Alpha and Bravo drives. Rear engine mounts absorb engine vibration and torque loading while holding the block securely in place at the transom end, so a worn, cracked, or collapsed mount can lead to excess vibration, misalignment, or drivetrain stress if left unaddressed.\u003c\/p\u003e\u003cp\u003eThis mount is manufactured with a machined exterior finish for a precise, consistent fit against the mounting hardware. It is designed to fit MCM flywheel housings used with Alpha and Bravo drives, and covers a broad range of MerCruiser applications including 120\/140 HP engines from S\/N 6229717 and up, all 224 CID blocks, 200, 228, 230, 260, 300, and 320 HP engines, and all 350-454 Magnum engines. Sierra parts are backed by Sierra's customer satisfaction warranty, giving boat owners a dependable aftermarket option when the original engine mount needs replacement.\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 18-2193\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Gearcase \u0026amp; Drive Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999562517\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.16 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\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Compatibility:\u003c\/strong\u003e MCM flywheel housing with Alpha and Bravo drives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 33149, 99297A1, 99297A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e120\/140 HP, S\/N 6229717 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eAll 224 CID blocks\u003c\/li\u003e\n\u003cli\u003eAll 898, 200, 228, 230, 260, 300 \u0026amp; 320 HP engines\u003c\/li\u003e\n\u003cli\u003eAll 350-454 Magnum engines\u003c\/li\u003e\n\u003cli\u003eMCM flywheel housing with Alpha and Bravo drives\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e33149\u003c\/li\u003e\n\u003cli\u003e99297A1\u003c\/li\u003e\n\u003cli\u003e99297A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-2193 rear engine mount fit?\u003c\/strong\u003e The Sierra 18-2193 fits 120\/140 HP engines from S\/N 6229717 and up, all 224 CID blocks, 200, 228, 230, 260, 300, and 320 HP engines, and all 350-454 Magnum engines with an MCM flywheel housing paired with Alpha or Bravo drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2193 mount compatible with Alpha and Bravo drives?\u003c\/strong\u003e Yes, the Sierra 18-2193 rear engine mount is designed for MCM flywheel housings used with both Alpha and Bravo drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does the Sierra 18-2193 replace?\u003c\/strong\u003e This rear engine mount replaces OEM numbers 33149, 99297A1, and 99297A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2193 the same as Mercury Marine 99297A1?\u003c\/strong\u003e The Sierra 18-2193 is an aftermarket equivalent to Mercury Marine 99297A1 and is built to replace that OEM part directly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the 18-2193 rear engine mount have?\u003c\/strong\u003e It has a machined exterior finish for a precise fit at the mounting interface.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2193 rear engine mount weigh?\u003c\/strong\u003e The Sierra 18-2193 weighs 0.16 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-2193 rear engine mount?\u003c\/strong\u003e The rear engine mount measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes a worn rear engine mount need to be replaced?\u003c\/strong\u003e Yes, a worn, cracked, or collapsed rear engine mount like the position filled by the Sierra 18-2193 should be replaced to prevent excess vibration and misalignment at the flywheel housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2193 covered by a warranty?\u003c\/strong\u003e The Sierra 18-2193 rear engine mount is covered under Sierra's customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2193 fit 224 CID block engines?\u003c\/strong\u003e Yes, the Sierra 18-2193 rear engine mount fits all 224 CID blocks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2193 fit 350-454 Magnum engines?\u003c\/strong\u003e Yes, this rear engine mount fits all 350-454 Magnum engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988105441499,"sku":"SIE-18-2193","price":44.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2193_lg__68258.1558122963.500.750.jpg?v=1785188494"},{"product_id":"sierra-18-2370-bearing-carrier-replaces-19291a3-for-force-40-50-70-75-hp-mercury-mariner-30-60-hp-outboards","title":"Sierra 18-2370 Carrier Bearing, Replaces 19291A3 for Chrysler\/Force\/Mercury Outboard Motors","description":"\u003cp\u003eThe Sierra 18-2370 Carrier Bearing is a rubber bearing carrier engineered to meet or exceed original equipment specifications for outboard motor applications. It is designed as a direct replacement part, interchangeable with the corresponding Chrysler, Force, US Marine, Mallory, and Mercury carrier bearing part numbers. Sierra manufactures this component to the same quality standards used by OEM engine manufacturers and boat builders, making it a reliable choice when the original bearing has worn out or failed.\u003c\/p\u003e\u003cp\u003eConstructed from rubber, the 18-2370 is compact and lightweight at just 0.13 pounds, with overall dimensions of 0.39 x 0.39 x 0.39 inches. Its small footprint reflects its role as a precision carrier bearing rather than a large structural component, and its rubber construction is suited to absorbing vibration and supporting rotating parts in the marine drivetrain. Each unit ships as a single bearing carrier.\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 18-2370\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eInterchangeable with Chrysler, Force, and US Marine outboard motor applications using the corresponding OEM carrier bearing part numbers listed below.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e19291A3\u003c\/li\u003e\n\u003cli\u003e9-72600\u003c\/li\u003e\n\u003cli\u003e19291A2\u003c\/li\u003e\n\u003cli\u003e19291A1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2370 carrier bearing fit?\u003c\/strong\u003e The Sierra 18-2370 is interchangeable with Chrysler, Force, and US Marine outboard motor applications that originally used carrier bearing part numbers 19291A3, 19291A2, or 19291A1, as well as Mercury units using 19291A3, and Mallory unit 9-72600.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2370 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra-manufactured replacement bearing, built to meet or exceed the original equipment part it replaces rather than being a factory Chrysler, Force, or Mercury branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the Sierra 18-2370 replace?\u003c\/strong\u003e It replaces 19291A3, 19291A2, and 19291A1 (Chrysler, Force, US Marine, and Mercury) as well as Mallory 9-72600.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the carrier bearing made from?\u003c\/strong\u003e The Sierra 18-2370 carrier bearing is made of rubber.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2370 carrier bearing weigh?\u003c\/strong\u003e This bearing weighs 0.13 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-2370?\u003c\/strong\u003e The 18-2370 measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many bearings are included in one purchase?\u003c\/strong\u003e One Sierra 18-2370 carrier bearing is included per unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this bearing be used as a Mercury 19291A3 replacement?\u003c\/strong\u003e Yes, the Sierra 18-2370 is interchangeable with Mercury part number 19291A3.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes Sierra warranty the 18-2370 carrier bearing?\u003c\/strong\u003e The Sierra 18-2370 is covered under Sierra's limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2370 the same as the Mallory 9-72600?\u003c\/strong\u003e Yes, the 18-2370 is interchangeable with Mallory part number 9-72600.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988105933019,"sku":"SIE-18-2370","price":178.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2370_lg__75904.1558122296.500.750.jpg?v=1785188019"},{"product_id":"sierra-18-3904-marine-piston-ring-set-for-johnson-evinrude-omc-85-300-hp-outboards-replaces-omc-394930-3-5-in-bore-standard","title":"Sierra 18-3904 Standard Piston Rings, OMC 394930 Cross Reference, V-4\/V-6 60 Degree Eagle Series","description":"\u003cp\u003eThe Sierra 18-3904 is a standard-size piston ring set engineered for OMC V-4 and V-6 60 Degree Eagle Series outboard and Sea Drive engines. Each ring is precision machined to restore proper cylinder sealing, compression, and oil control on a rebuild or overhaul, helping the engine run efficiently and preventing blow-by that leads to power loss and excess oil consumption. As a standard (STD.) size ring set, part number 18-3904 is intended for cylinders that have not been bored oversize; if a block has been bored out, a corresponding oversize ring set is required instead. Sierra manufactures these rings to correspond with the original equipment specification, and every set is backed by Sierra's standard parts warranty. This part is sold as a compact, lightweight ring set suited to marine mechanics and engine builders performing a piston ring replacement or full piston kit rebuild on qualifying OMC 60 Degree Eagle Series powerheads and Sea Drive 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 18-3904\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Piston Rings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e Standard (STD.)\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 0.08 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 030999316981\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e OMC 394930\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC V-4 and V-6 60 Degree Eagle Series outboard engines\u003c\/li\u003e\n\u003cli\u003eOMC Sea Drive engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOMC 394930\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-3904 piston ring set fit?\u003c\/strong\u003e The Sierra 18-3904 is designed for OMC V-4 and V-6 60 Degree Eagle Series outboard engines as well as OMC Sea Drive engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-3904 a standard size or oversize ring set?\u003c\/strong\u003e Part number 18-3904 is a standard (STD.) size piston ring set, meaning it is intended for cylinders at original bore diameter that have not been machined oversize.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-3904 cross reference to an OMC part number?\u003c\/strong\u003e Yes, the Sierra 18-3904 ring set corresponds to OMC part number 394930.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3904 piston ring set weigh?\u003c\/strong\u003e The 18-3904 piston ring set weighs 0.08 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-3904 piston rings?\u003c\/strong\u003e Sierra 18-3904 measures 0.39 x 0.39 x 0.39 inches per the packaged listing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish do the 18-3904 piston rings have?\u003c\/strong\u003e The rings in Sierra part 18-3904 have a machined finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need an oversize ring set instead of 18-3904?\u003c\/strong\u003e If the cylinder bore on the OMC 60 Degree Eagle Series or Sea Drive block has been machined oversize during a rebuild, an oversize ring set is needed rather than the standard-size 18-3904.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3904 genuine Sierra manufactured or a generic aftermarket part?\u003c\/strong\u003e 18-3904 is manufactured by Sierra, a recognized marine parts brand, and is covered by Sierra's parts warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order part 18-3904?\u003c\/strong\u003e Ordering 18-3904 gets you the complete standard-size piston ring set for one piston on the applicable OMC 60 Degree Eagle Series or Sea Drive engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan 18-3904 be used for a full engine rebuild?\u003c\/strong\u003e Yes, the 18-3904 standard ring set is commonly installed during a piston or engine rebuild on OMC V-4\/V-6 60 Degree Eagle Series and Sea Drive engines, alongside the corresponding piston.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988169830619,"sku":"SIE-18-3904","price":36.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-3904__85667.1558321433.500.750.jpg?v=1785188628"},{"product_id":"sierra-18-3905-piston-ring-set-for-johnson-evinrude-85-300-hp-outboards-030-oversize-3-53-bore-replaces-omc-396504","title":"Sierra Piston Ring Set 18-3905,.030 Inch Oversize, for Johnson\/Evinrude OMC Outboards, Replaces OMC 396504","description":"\u003cp\u003eThe Sierra 18-3905 is a.030 inch oversize piston ring set built for rebuilding Johnson and Evinrude OMC outboard powerheads. When a cylinder has been bored.030 inch over standard to true up worn or scored walls, this ring set restores proper compression and oil control so the rebuilt engine seals and runs like new. Each ring is machined to close tolerances for a consistent, even seal against the cylinder wall, helping the powerhead hold compression and resist blow-by after a rebuild.\u003c\/p\u003e\u003cp\u003eThe 18-3905 set is part of Sierra's Evinrude Outboard OMC Eagle and Sea Drive piston program, and it interchanges with common aftermarket and OEM ring numbers, making it a straightforward replacement when the original OMC rings are no longer available. Every Sierra part is manufactured to meet or exceed the specification of the original equipment it replaces and is backed by Sierra's customer satisfaction warranty.\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 18-3905\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Piston Ring Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOversize:\u003c\/strong\u003e.030 inch (30 thousandths over standard)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\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\u003eWeight:\u003c\/strong\u003e 0.08 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999316998\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Johnson and Evinrude OMC outboard engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e OMC Eagle and Sea Drive series pistons\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThe Sierra 18-3905 piston ring set is designed for use in Johnson and Evinrude outboard applications, specifically OMC Eagle and Sea Drive series powerheads.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC 396504\u003c\/li\u003e\n\u003cli\u003eGLM 24300\u003c\/li\u003e\n\u003cli\u003eMallory 9-54418\u003c\/li\u003e\n\u003cli\u003eMallory 9-54422\u003c\/li\u003e\n\u003cli\u003eWiseco 3530KD\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the Sierra 18-3905 piston ring set designed for?\u003c\/strong\u003e The Sierra 18-3905 is designed for use in Johnson and Evinrude OMC outboard engines, specifically the OMC Eagle and Sea Drive series powerheads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size oversize is the 18-3905 ring set?\u003c\/strong\u003e It is a.030 inch oversize set, meaning it is sized for a cylinder that has been bored 30 thousandths of an inch over standard to clean up a worn or damaged bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3905 replace the OMC 396504 piston ring?\u003c\/strong\u003e Yes, the Sierra 18-3905 is a direct interchange for OMC 396504 as well as GLM 24300, Mallory 9-54418 and 9-54422, and Wiseco 3530KD.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-3905 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra aftermarket replacement part manufactured to meet or exceed the specification of the original OMC 396504 ring it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3905 piston ring set weigh?\u003c\/strong\u003e The Sierra 18-3905 weighs 0.08 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish do the 18-3905 piston rings have?\u003c\/strong\u003e The rings in the 18-3905 set have a machined finish for a precise, consistent seal against the cylinder wall.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need the.030 oversize 18-3905 rings instead of standard-size rings?\u003c\/strong\u003e You need the.030 oversize 18-3905 set after a cylinder has been bored.030 inch over standard during a rebuild, which is typically done to true up a worn or scored bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-3905 piston ring package?\u003c\/strong\u003e The Sierra 18-3905 piston ring set has product dimensions of 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3905 covered by a warranty?\u003c\/strong\u003e Yes, the 18-3905 is covered under Sierra's customer satisfaction warranty like all Sierra marine parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3905 piston ring set?\u003c\/strong\u003e The UPC for the Sierra 18-3905 is 030999316998.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988169863387,"sku":"SIE-18-3905","price":36.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-3905__97830.1739458760.500.750.jpg?v=1785189208"},{"product_id":"sierra-18-3911-piston-ring-set-020-oversize-for-johnson-evinrude-25-35-hp-2-cyl-60-75-hp-3-cyl-outboards-replaces-omc-396378","title":"Sierra Piston Ring Set 18-3911,.020 Oversize 3.020 Inch Bore, Fits 25-35 HP 2-Cyl and 60-75 HP 3-Cyl Outboards, Replaces 396378","description":"\u003cp\u003eThe Sierra 18-3911 is a piston ring set engineered for outboard engines with a.020 inch overbore, giving the piston a 3.020 inch bore diameter once the cylinder has been rebored.020 inch over standard. It is designed for use on 25-35 HP 2-cylinder outboards and on 60-75 HP 3-cylinder outboards that share the same 3.020 inch bore specification, making it a common rebuild part for these Evinrude inline engine families. The set directly replaces OEM piston ring number 396378, so it can be installed as a like-for-like match during a piston and ring rebuild without altering the original engine specification.\u003c\/p\u003e\u003cp\u003ePiston rings seal the combustion chamber, control oil consumption, and transfer heat away from the piston to the cylinder wall, so fitting the correct oversize is critical to maintaining proper compression and preventing blow-by after a cylinder has been bored. Because 18-3911 is sized specifically for the.020 inch overbore, it should only be installed after the block has been machined to that dimension; a standard-bore engine requires the standard-size ring set instead. This part is sold under Sierra's own part numbering and is built to the compact dimensions and light weight typical of a small-engine ring set, making it easy to stock alongside the matching piston, wrist pin, and circlip parts used in the same 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 18-3911\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Piston Ring Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999542762\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 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\u003eCylinder Bore Size:\u003c\/strong\u003e 3.020 inches (.020 inch oversize)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 25-35 HP 2-cylinder outboard; 60-75 HP 3-cylinder outboard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 396378\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Inline Piston and Rings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e25-35 HP, 2-cylinder outboard, 3.020 inch bore (.020 inch oversize)\u003c\/li\u003e\n\u003cli\u003e60-75 HP, 3-cylinder outboard, 3.020 inch bore (.020 inch oversize)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e396378\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM number does the Sierra 18-3911 piston ring set replace?\u003c\/strong\u003e It replaces OEM piston ring number 396378, so the Sierra 18-3911 is a direct cross-reference for engines calling for that OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does part number 18-3911 fit?\u003c\/strong\u003e This piston ring set fits 25-35 HP 2-cylinder outboards and 60-75 HP 3-cylinder outboards that use a 3.020 inch cylinder bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3911 ring set a standard bore size or an oversize?\u003c\/strong\u003e It is a.020 inch oversize set, sized for a 3.020 inch bore after the cylinder has been rebored.020 inch over standard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install 18-3911 in a standard-bore engine that has not been rebored?\u003c\/strong\u003e No. The 18-3911 piston ring set is machined for a 3.020 inch bore (.020 inch oversize) and is not intended for a standard-bore cylinder.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3911 piston ring set weigh?\u003c\/strong\u003e The 18-3911 piston ring set weighs 0.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the physical dimensions of the 18-3911 piston ring set?\u003c\/strong\u003e Sierra part 18-3911 measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat wrist pin is used with the same.020 oversize engines as 18-3911?\u003c\/strong\u003e Engines using the 18-3911.020 oversize piston ring set use wrist pin OEM part number 320954.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat circlip is paired with the 18-3911 piston ring set application?\u003c\/strong\u003e The matching circlip for these.020 oversize applications is Sierra part 18-4290, which corresponds to OEM number 317831.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho manufactures part number 18-3911?\u003c\/strong\u003e Part number 18-3911 is manufactured by Sierra.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a standard-bore or.030 oversize version of this piston ring for the same engines?\u003c\/strong\u003e Yes. The same 25-35 HP and 60-75 HP engine applications also use a standard-bore ring set (OEM 396377) and a.030 inch oversize ring set (OEM 396379), which are different Sierra part numbers than the.020 oversize 18-3911.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3911 piston ring set?\u003c\/strong\u003e The UPC for Sierra 18-3911 is 030999542762.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988170092763,"sku":"SIE-18-3911","price":11.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-3911__99199.1737881865.500.750.jpg?v=1785188897"},{"product_id":"sierra-18-3921-standard-bore-piston-ring-set-for-mercury-v-6-105-jet-135-150-hp-outboards-2-5l-replaces-oem-39-93481a12","title":"Sierra Piston Rings 18-3921 for Mercury Marine V-6 135-175 HP, 3.125 Inch Standard Bore, Replaces 39-93481A12","description":"\u003cp\u003eThe Sierra 18-3921 is a piston ring set engineered for Mercury Marine V-6 outboards in the 135-175 HP range fitted with 3.125 inch standard-bore pistons. Sierra manufactures its piston rings to match OEM dimensions and tolerances, giving a factory-correct seal between the piston and cylinder wall for proper compression and oil control during a rebuild or piston replacement. This ring set is used with the 3.125 inch standard bore piston application on this engine family and applies to both the port and starboard cylinder banks, since the ring specification is identical for both sides at this bore size (only the piston part numbers differ by side, not the ring set).\u003c\/p\u003e\u003cp\u003eThese rings are a direct cross-reference to Mercury Marine OEM part number 39-93481A12, so they install using the same ring gap and groove specifications as the original equipment rings. They are sold as part of Sierra's line of Mercury outboard 2-ring inline piston components, intended for engine builders and mechanics performing a top-end rebuild, re-ring, or piston swap on a compatible V-6 outboard powerhead.\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 18-3921\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard 2 Ring Inline Pistons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Size:\u003c\/strong\u003e 3.125 inches, Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e Mercury Marine V-6, 135-175 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 39-93481A12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999621665\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 8 x 6 x 4 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine V-6, 135-175 HP, 3.125 inch bore, Standard size, port and starboard cylinders\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e39-93481A12\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-3921 piston ring set fit?\u003c\/strong\u003e The Sierra 18-3921 fits Mercury Marine V-6 outboards rated 135-175 HP that use a 3.125 inch standard bore piston.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3921 for the port or starboard cylinder bank?\u003c\/strong\u003e The 18-3921 ring set applies to both the port and starboard cylinders on the 3.125 inch standard bore V-6 application, since the ring specification is the same for both sides; only the piston part numbers differ between port and starboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-3921 cross-reference?\u003c\/strong\u003e Sierra 18-3921 cross-references Mercury Marine OEM part number 39-93481A12.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat bore size are these piston rings sized for?\u003c\/strong\u003e This set is sized for a 3.125 inch standard bore, with no oversize (overbore) adjustment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3921 piston ring set weigh?\u003c\/strong\u003e The Sierra 18-3921 weighs 0.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre Sierra 18-3921 rings a genuine OEM part or aftermarket?\u003c\/strong\u003e The 18-3921 is a Sierra-manufactured aftermarket part built to the same specification as Mercury Marine OEM number 39-93481A12.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-3921 rings for a re-ring without replacing the pistons?\u003c\/strong\u003e Yes, the 18-3921 is a piston ring set intended for use with existing 3.125 inch standard bore pistons on the compatible Mercury V-6 135-175 HP application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of engine components does the 18-3921 belong to?\u003c\/strong\u003e Sierra lists the 18-3921 under its Mercury Outboard 2 Ring Inline Pistons category.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3921 work with an overbore piston?\u003c\/strong\u003e No, the 18-3921 is specified for the 3.125 inch standard bore only; oversize applications use a different Sierra ring part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3921 piston ring set?\u003c\/strong\u003e The UPC for the Sierra 18-3921 is 030999621665.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988170256603,"sku":"SIE-18-3921","price":40.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-3921__46568.1722381689.500.750.jpg?v=1785188379"},{"product_id":"thrust-washer-for-mercury-75-125-hp-outboards-replaces-13191a1-sierra-18-4221","title":"Sierra Thrust Washer 18-4221 - Replaces Mercury 13191A1, 75282A1 - Fits 4 \u0026 6 Inline 75-150 HP Outboards","description":"\u003cp\u003eThe Sierra 18-4221 is a flat thrust washer engineered as a direct replacement for Mercury Marine outboard applications. Thrust washers sit against the propeller hub to take up axial load from the prop shaft, protecting the gearcase and propeller from wear during operation. This washer is built to Mercury 4 \u0026amp; 6 Inline 75-150 HP specifications and carries a machined finish for a precise, consistent fit against the hub and shaft.\u003c\/p\u003e\u003cp\u003eConstructed with a flat washer profile, the 18-4221 measures 0.39 inches and is finished in white for easy visual identification during service. It is designed to install in place of the original Mercury thrust washer without modification, restoring correct hub spacing and thrust bearing surface on applicable outboards. Every Sierra part is backed by Sierra's customer satisfaction warranty, giving installers confidence in fit and durability for routine prop maintenance or full lower unit rebuilds.\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 18-4221\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher Type:\u003c\/strong\u003e Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal Type:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.23 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999317681\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 13191A1, 75282A1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury 4 \u0026amp; 6 Inline - 75-150 HP\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 13191A1\u003c\/li\u003e\n\u003cli\u003eMercury Marine 75282A1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-4221 thrust washer fit?\u003c\/strong\u003e The 18-4221 fits Mercury 4 \u0026amp; 6 Inline 75-150 HP outboard applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-4221 a direct replacement for Mercury 13191A1?\u003c\/strong\u003e Yes, part number 18-4221 is a direct cross-reference for Mercury Marine 13191A1 and 75282A1, installing the same way as the original thrust washer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is this thrust washer?\u003c\/strong\u003e The 18-4221 thrust washer measures 0.39 inches, with overall dimensions of 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-4221 made from?\u003c\/strong\u003e This thrust washer is listed with a rubber material composition and a machined finish for a consistent fit against the prop hub.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-4221 thrust washer weigh?\u003c\/strong\u003e It weighs 0.23 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-4221 thrust washer?\u003c\/strong\u003e It is finished in white, part number 18-4221.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this an OEM or aftermarket part?\u003c\/strong\u003e The 18-4221 is a Sierra-manufactured aftermarket part built to replace Mercury Marine 13191A1 and 75282A1 with equivalent form and function.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between a flat thrust washer and other washer types?\u003c\/strong\u003e The 18-4221 is a flat washer type, designed to sit flush against the propeller hub and shaft to absorb axial thrust load, unlike beveled or cupped washer designs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-4221?\u003c\/strong\u003e Ordering the 18-4221 includes one Sierra thrust washer, part number 18-4221.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-4221 come with a warranty?\u003c\/strong\u003e Yes, the 18-4221 thrust washer is covered under Sierra's customer satisfaction warranty.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988171436251,"sku":"SIE-18-4221","price":29.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-4221_lg__73068.1558126629.500.750.jpg?v=1785188562"},{"product_id":"sierra-18-4220-thrust-hub-for-mercury-mariner-outboard-mercruiser-alpha-one-gen-1-sterndrive-replaces-oem-79448","title":"Sierra 18-4220 Marine Thrust Washer for Mercury\/Mariner Outboard Motors, Replaces 13171, 77987, White","description":"\u003cp\u003eThe Sierra 18-4220 is a marine thrust washer engineered for Mercury\/Mariner outboard motors, with application in V-6 outboards and Mercruiser sterndrives. Machined from alloy steel with a glossy white finish, this washer is built to meet or exceed original equipment quality standards, providing the precise thrust bearing surface needed to support proper propeller shaft alignment and load distribution in the lower unit. Thrust washers like the 18-4220 sit against the propeller shaft to absorb axial thrust loads generated during operation, protecting the gearcase from wear and helping maintain correct shaft positioning. Using a properly sized, quality thrust washer during a lower unit rebuild or propeller shaft service helps prevent premature wear to surrounding gearcase components. The Sierra 18-4220 is sold as a single piece and is dimensioned at 0.39 x 0.39 x 0.39 inches, making it a compact but critical component in the lower unit assembly. It is compatible with Mercury\/Mariner outboard motors and Mercruiser sterndrives using the OEM numbers listed below, giving buyers a reliable aftermarket equivalent for repair or rebuild work.\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 18-4220\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thrust Washer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined, Glossy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.53 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Marine\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 030999317674\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury\/Mariner Outboard Motors\u003c\/li\u003e\n\u003cli\u003eV-6 Outboards and Mercruiser Sterndrives\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e13171\u003c\/li\u003e\n\u003cli\u003e77987\u003c\/li\u003e\n\u003cli\u003e12-835467-1\u003c\/li\u003e\n\u003cli\u003eRO96116\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-4220 used for?\u003c\/strong\u003e The Sierra 18-4220 is a marine thrust washer that sits against the propeller shaft in the lower unit to absorb axial thrust loads and support correct shaft alignment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-4220 fit Mercury outboards?\u003c\/strong\u003e Yes, the Sierra 18-4220 thrust washer is designed for Mercury\/Mariner outboard motors as well as V-6 outboards and Mercruiser sterndrives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-4220 replace?\u003c\/strong\u003e The Sierra 18-4220 replaces Mercury\/Mercruiser OEM numbers 13171, 77987, 12-835467-1, and Pleasurecraft RO96116.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this an OEM or aftermarket part?\u003c\/strong\u003e The Sierra 18-4220 is an aftermarket thrust washer manufactured to meet or exceed original equipment quality standards for the Mercury\/Mercruiser OEM numbers it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-4220 thrust washer made from?\u003c\/strong\u003e It is made from alloy steel with a machined, glossy finish in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Sierra 18-4220 thrust washer?\u003c\/strong\u003e The 18-4220 measures 0.39 x 0.39 x 0.39 inches and weighs 0.53 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many washers come in one order of the 18-4220?\u003c\/strong\u003e Each order of the Sierra 18-4220 includes one thrust washer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-4220 compatible with Mercruiser sterndrives?\u003c\/strong\u003e Yes, the Sierra 18-4220 is compatible with V-6 outboards and Mercruiser sterndrives in addition to Mercury\/Mariner outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to replace a thrust washer like the 18-4220?\u003c\/strong\u003e A thrust washer is typically replaced during a lower unit rebuild or propeller shaft service, especially if the existing washer shows wear from absorbing axial thrust loads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-4220 have a specific color or finish?\u003c\/strong\u003e The Sierra 18-4220 has a white, glossy machined finish on its alloy steel construction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Pleasurecraft equivalent of the Sierra 18-4220?\u003c\/strong\u003e The Sierra 18-4220 is equivalent to Pleasurecraft OEM number RO96116.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988171829467,"sku":"SIE-18-4220","price":31.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-4220_lg__80296.1558126570.500.750.jpg?v=1785188548"},{"product_id":"sierra-18-4229-propeller-spacer-for-johnson-evinrude-outboard-motors-replaces-omc-321453-prop-shaft-thrust-spacer","title":"Sierra International 18-4229 Thrust Washer, Replaces OMC 319890, Fits Johnson\/Evinrude Outboard Motors","description":"\u003cp\u003eThe Sierra International 18-4229 is a stainless steel thrust washer engineered as a direct replacement for outboard engine mount applications. This thrust washer sits at the propeller shaft or drive assembly to manage axial load and reduce wear between rotating and stationary components, helping maintain smooth engine operation. It is built for gasoline-powered outboard motors and is compatible with both 2-stroke and 4-stroke engine types, making it a versatile stocking item for engine maintenance and rebuild work.\u003c\/p\u003e\u003cp\u003eConstructed from stainless steel for corrosion resistance in saltwater and freshwater marine environments, the 18-4229 is manufactured in the United States and packaged as a single unit measuring 5.13 inches by 4.0 inches by 0.5 inches, weighing 0.17 pounds. It functions as a direct cross-reference replacement for the OMC 319890 thrust washer, and is compatible with Johnson\/Evinrude outboard motors. Whether performing a full engine rebuild or replacing a single worn component, this thrust washer offers a precise fit intended to match OEM dimensions and function.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra International\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-4229\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thrust Washer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 5.13 inches L x 4.0 inches W x 0.5 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.17 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Multi-Colored\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e 2 Stroke, 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 Engine Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282259099\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude outboard motors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e319890\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-4229 thrust washer replace?\u003c\/strong\u003e The 18-4229 is a direct cross-reference replacement for OMC 319890, so any application calling for that number can use this thrust washer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-4229 thrust washer made of stainless steel?\u003c\/strong\u003e Yes, this thrust washer is constructed from stainless steel, chosen for its resistance to corrosion in both saltwater and freshwater marine environments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboard motors is the 18-4229 thrust washer compatible with?\u003c\/strong\u003e This thrust washer is compatible with Johnson\/Evinrude outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-4229 thrust washer weigh?\u003c\/strong\u003e It weighs 0.17 pounds as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-4229 thrust washer package?\u003c\/strong\u003e The package measures 5.13 inches long by 4.0 inches wide by 0.5 inches high.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-4229 work with both 2-stroke and 4-stroke engines?\u003c\/strong\u003e Yes, the Sierra 18-4229 thrust washer is listed as compatible with both 2-stroke and 4-stroke outboard engine types.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the 18-4229 thrust washer installed on the engine?\u003c\/strong\u003e It is an engine-mount thrust washer, positioned to manage axial load between rotating and stationary components on the outboard's drive assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra International part or a generic aftermarket copy?\u003c\/strong\u003e The 18-4229 is manufactured by Sierra International as a branded replacement part, not an unbranded generic washer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat fuel type is the 18-4229 thrust washer designed for?\u003c\/strong\u003e It is designed for use in gasoline-fueled outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-4229 thrust washer manufactured?\u003c\/strong\u003e This thrust washer is manufactured in the United States.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many thrust washers come in one package?\u003c\/strong\u003e The 18-4229 is sold as a single individual thrust washer per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the OMC 319890 part number cross-reference to the Sierra 18-4229?\u003c\/strong\u003e Yes, OMC 319890 crosses directly to the Sierra International 18-4229 thrust washer.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988172222683,"sku":"SIE-18-4229","price":42.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-4229_lg__92773.1558127033.500.750.jpg?v=1785188775"},{"product_id":"sierra-18-4295-9-e-clip-for-mercruiser-vazer-replaces-oem-79448-pack-of-2","title":"Sierra 18-4295-9 E-Clip - Replaces 53-29641 - Pack of 2 - Mercruiser Vazer","description":"\u003cp\u003eThe Sierra 18-4295-9 E-Clip is a replacement retaining clip engineered for Mercruiser Vazer applications. Sold as a pack of two, this small but essential component is molded from durable black plastic and uses a clip-on fastening style to secure components in place on the drive. It is manufactured to meet or exceed the specifications of the original equipment part it replaces, OEM number 53-29641, making it a reliable substitute when the factory clip has worn out, cracked, or been lost during service.\u003c\/p\u003e\u003cp\u003eBecause E-clips are inexpensive, easy to lose, and simple to overlook during a rebuild, keeping a pack on hand is useful for anyone servicing a Mercruiser Vazer drive. The 18-4295-9 is backed by Sierra's standard parts warranty and is built to the same fit and function as the part it replaces, so it installs the same way the original clip did.\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 18-4295-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e Pack of 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Mercruiser Vazer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso Fits:\u003c\/strong\u003e IA\/IB\/IC \u0026amp; EZ Shift, MC-I, R, MR \u0026amp; Alpha One\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 53-29641\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Type:\u003c\/strong\u003e Clip On\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 808282166441\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercruiser Vazer\u003c\/li\u003e\n\u003cli\u003eMercruiser IA\/IB\/IC \u0026amp; EZ Shift, MC-I, R, MR \u0026amp; Alpha One\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e53-29641\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-4295-9 E-Clip fit?\u003c\/strong\u003e The 18-4295-9 E-Clip is designed for Mercruiser Vazer applications and also fits Mercruiser IA\/IB\/IC \u0026amp; EZ Shift, MC-I, R, MR \u0026amp; Alpha One drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-4295-9 E-Clip sold as a single piece or a set?\u003c\/strong\u003e This Sierra E-Clip is sold as a pack of 2, so two clips come with each order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-4295-9 E-Clip replace?\u003c\/strong\u003e It replaces OEM part number 53-29641.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-4295-9 E-Clip made from?\u003c\/strong\u003e It is molded from plastic in a black finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-4295-9 E-Clip weigh?\u003c\/strong\u003e Each package weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-4295-9 E-Clip fit Alpha One drives?\u003c\/strong\u003e Yes, this E-Clip fits Mercruiser Alpha One drives in addition to IA\/IB\/IC \u0026amp; EZ Shift, MC-I, R, and MR applications, as well as the Vazer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-4295-9 E-Clip installed?\u003c\/strong\u003e It uses a clip-on fastener design, the same method as the original equipment clip it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-4295-9 a genuine OEM part or an aftermarket equivalent?\u003c\/strong\u003e It is a Sierra-manufactured replacement part built to meet or exceed the specifications of the original equipment part it replaces, OEM 53-29641.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-4295-9 E-Clip?\u003c\/strong\u003e The UPC for this pack of 2 E-Clips is 808282166441.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the package when ordering the 18-4295-9 E-Clip?\u003c\/strong\u003e Each order includes 2 E-Clips, Sierra part number 18-4295-9.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988193128667,"sku":"SIE-18-4295-9","price":2.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/sie-18-4295_lg_1__25126.1558128757.500.750.jpg?v=1785188340"},{"product_id":"sierra-18-6457-composite-serpentine-pulley-replaces-807757t-fits-late-model-gm-v6-v8-marine-engines-3-od-13-16-belt","title":"Sierra 18-6457 Composite Pulley, Replaces 807757T, for Late Model GM V6 \u0026 V8 Engines","description":"\u003cp\u003eThe Sierra 18-6457 is a composite pulley engineered for late model GM V6 and V8 engines in MerCruiser sterndrive (I\/O) cooling system applications. It has a 3 inch outer diameter and is sized for a 13\/16 inch width serpentine belt, making it a direct fit for the serpentine belt drive on these engines. The pulley body is molded from composite material, offering a lightweight alternative to a stamped-steel pulley while standing up to the heat, moisture, and vibration of a marine engine compartment.\u003c\/p\u003e\u003cp\u003eThis pulley is a replacement part for 807757T and is built to restore proper belt alignment and tension on the accessory drive of applicable GM V6 and V8 marine engines. It is a straightforward swap for a worn, cracked, or wobbling factory pulley, helping keep the serpentine belt tracking correctly and reducing belt slip or premature wear.\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 18-6457\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Composite Pulley\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Width Compatibility:\u003c\/strong\u003e 13\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulley Style:\u003c\/strong\u003e Serpentine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e Late model GM V6 \u0026amp; V8 engines\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 Composite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.12 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282200527\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits late model GM V6 and V8 engines used in MerCruiser sterndrive (I\/O) cooling system applications, using a serpentine belt of 13\/16 inch width.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003e807757T\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-6457 pulley fit?\u003c\/strong\u003e The Sierra 18-6457 composite pulley fits late model GM V6 and V8 engines used in MerCruiser sterndrive (I\/O) cooling system applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat belt size does this pulley use?\u003c\/strong\u003e It is sized for a 13\/16 inch width serpentine belt, matching the outer diameter and groove profile of the 3 inch pulley.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the outer diameter of the 18-6457 pulley?\u003c\/strong\u003e 3 inches, measured across the outside of the composite pulley wheel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-6457 replace part number 807757T?\u003c\/strong\u003e Yes, part number 18-6457 is a direct replacement for 807757T.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the pulley made of?\u003c\/strong\u003e The pulley body is made of composite material rather than stamped steel, and it is finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-6457 pulley weigh?\u003c\/strong\u003e It weighs 0.12 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e Part number 18-6457 is a genuine Sierra composite pulley, sold under the Sierra brand as a replacement for OEM part 807757T.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-6457?\u003c\/strong\u003e The order includes one Sierra 18-6457 composite pulley; no mounting hardware or belt is included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this pulley work on a non-GM engine?\u003c\/strong\u003e The 18-6457 is designated for late model GM V6 and V8 engines; fitment on other engine families is not specified for this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat system is this pulley used on?\u003c\/strong\u003e The Sierra 18-6457 is used on the serpentine belt drive of the cooling system on applicable MerCruiser I\/O engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988357624027,"sku":"SIE-18-6457","price":43.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-6457_lg__18946.1558128943.500.750.jpg?v=1785188974"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/collections\/SIE-18-6457_lg__18946.1558128943.500.750.jpg?v=1785356950","url":"https:\/\/www.goodvibesmarina.com\/collections\/gvcat-engine-parts-systems-gaskets-seals-bearings-bearings-bushings-thrust-washers.oembed?page=2","provider":"Good Vibes Marina","version":"1.0","type":"link"}