{"title":"Fuel Pump Repair Kits \u0026 Diaphragms","description":null,"products":[{"product_id":"sierra-18-0849-fuel-pump-mounting-gasket-for-yamaha-outboards-replaces-oem-650-24431-a0-00","title":"Sierra 18-0849 Fuel Pump Mounting Gasket - Replaces Yamaha 650-24431-A0-00 - Fits Four-Stroke 9.9-300 HP Outboards, 1999-Current","description":"\u003cp\u003eThe Sierra 18-0849 is a fuel pump mounting gasket engineered as a direct-fit replacement for Yamaha four-stroke outboard motors. It seals the mating surface between the fuel pump and its mounting point on the engine block, maintaining the seal needed to keep fuel flowing cleanly to the carburetor or fuel system without leaks, air intrusion, or pressure loss. A worn, cracked, or compressed original gasket is a common source of fuel pump seepage and rough running, and replacing it with the correctly sized 18-0849 restores a proper seal at a fraction of the cost of a new fuel pump assembly.\u003c\/p\u003e\u003cp\u003eThis gasket is designed to fit Yamaha Four-Stroke outboards from 9.9 hp through 300 hp, model year 1999 and newer. It cross-references directly to Yamaha OEM gasket and fuel pump numbers, so it installs in place of the original part without modification. Each unit ships as a single gasket, making it a simple, low-cost addition to a fuel pump service or rebuild kit for these outboards.\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 18-0849\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel Pump Mounting Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282291204\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Yamaha Four-Stroke outboards, 9.9 hp - 300 hp, 1999 and newer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 904-30142-28-00, 90430-14228-00, 650-24431-A0-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eYamaha Four-Stroke outboards, 9.9 hp to 300 hp, 1999 and newer (Current)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e904-30142-28-00\u003c\/li\u003e\n\u003cli\u003e90430-14228-00\u003c\/li\u003e\n\u003cli\u003e650-24431-A0-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-0849 fuel pump mounting gasket fit?\u003c\/strong\u003e It fits Yamaha Four-Stroke outboards ranging from 9.9 hp to 300 hp, model year 1999 and newer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0849 a direct replacement for Yamaha part 650-24431-A0-00?\u003c\/strong\u003e Yes, the 18-0849 gasket cross-references directly to Yamaha 650-24431-A0-00 and installs as a direct replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM Yamaha numbers does part 18-0849 cross-reference?\u003c\/strong\u003e Sierra 18-0849 cross-references Yamaha numbers 904-30142-28-00, 90430-14228-00, and 650-24431-A0-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in one order of 18-0849?\u003c\/strong\u003e Each order of the Sierra 18-0849 fuel pump mounting gasket includes a package quantity of 1 gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-0849 gasket weigh?\u003c\/strong\u003e The Sierra 18-0849 fuel pump mounting gasket weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the fuel pump mounting gasket do?\u003c\/strong\u003e It seals the joint between the fuel pump and its mounting surface on the Yamaha outboard engine block, preventing fuel or air leaks at that connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-0849 an OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-0849 is a Sierra-branded aftermarket gasket manufactured to replace the equivalent Yamaha OEM gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-0849 fit a Yamaha outboard built before 1999?\u003c\/strong\u003e The Sierra 18-0849 gasket is specified to fit Yamaha Four-Stroke outboards from model year 1999 and newer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-0849 gasket?\u003c\/strong\u003e The UPC for Sierra fuel pump mounting gasket 18-0849 is 808282291204.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the fuel pump mounting gasket on my Yamaha outboard?\u003c\/strong\u003e Replace the 18-0849 gasket whenever the fuel pump is removed for service or if fuel seepage is visible at the pump mounting joint on a compatible Yamaha Four-Stroke outboard.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988085944539,"sku":"SIE-18-0849","price":2.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0849__61812.1772806444.500.750.jpg?v=1785188073"},{"product_id":"sierra-18-0850-9-fuel-pump-gasket-replaces-omc-303615-pack-of-2-evinrude-johnson-outboard","title":"Sierra Fuel Pump Gasket 18-0850-9, Replaces 303615, Pack of 2","description":"\u003cp\u003eThe Sierra 18-0850-9 Fuel Pump Gasket is a replacement gasket engineered for outboard fuel pump mounting applications, sold in a pack of 2 for convenient stocking or dual-side jobs. Each gasket is manufactured to meet or exceed the quality of the original equipment part it replaces, providing a reliable seal between the fuel pump and its mounting surface to prevent fuel leaks and maintain proper pump function. Sierra produces this gasket for outboard fuel pump service and repair, and it is built as a direct fit replacement for the OEM part it corresponds to.\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 18-0850-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Fuel Pump Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e grey\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282161682\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for outboard fuel pump mounting applications using the same fuel pump mounting gasket as OEM part 303615.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e303615\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-0850-9 Fuel Pump Gasket used for?\u003c\/strong\u003e It seals the mounting surface between an outboard fuel pump and the engine, preventing fuel leaks at that joint. The Sierra 18-0850-9 comes as a pack of 2 gaskets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-0850-9 gasket replace OEM part 303615?\u003c\/strong\u003e Yes, the Sierra 18-0850-9 Fuel Pump Gasket replaces OEM part number 303615.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in one package?\u003c\/strong\u003e Two gaskets are included per package of the Sierra 18-0850-9 Fuel Pump Gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-0850-9 gasket?\u003c\/strong\u003e The gasket is grey in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-0850-9 Fuel Pump Gasket weigh?\u003c\/strong\u003e Each unit weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0850-9 a genuine Sierra part or aftermarket?\u003c\/strong\u003e It is a genuine Sierra part, manufactured to meet or exceed the quality of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this gasket?\u003c\/strong\u003e The UPC for the Sierra 18-0850-9 Fuel Pump Gasket is 808282161682.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install the 18-0850-9 gasket myself?\u003c\/strong\u003e Installation involves placing the gasket between the fuel pump and its mounting surface during pump removal or replacement; the Sierra 18-0850-9 is sized as a direct replacement for OEM part 303615 for this purpose.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does a fuel pump gasket need to be replaced?\u003c\/strong\u003e A worn or damaged fuel pump gasket like the 18-0850-9 can no longer seal properly, which can lead to fuel leaks or air intrusion at the pump mounting joint, so it is replaced whenever the fuel pump is serviced.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of engine does the 18-0850-9 gasket fit?\u003c\/strong\u003e The Sierra 18-0850-9 Fuel Pump Gasket is designed for outboard fuel pump mounting applications.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988085977307,"sku":"SIE-18-0850-9","price":4.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0850_lg__03998.1558121466.500.750.jpg?v=1785188503"},{"product_id":"sierra-18-0889-9-marine-fuel-pump-gasket-pack-of-2-replaces-chris-craft-16-50-00074-mercruiser-27-34213-fits-gm-v-6-and-v-8-marine-engines","title":"Sierra Fuel Pump Gasket 18-0889-9, Pack of 2 - Cross-Reference for Mercruiser, Volvo Penta, Chris-Craft","description":"\u003cp\u003eThe Sierra 18-0889-9 Fuel Pump Gasket is a replacement gasket sized for marine fuel pump installations, sold as a pack of 2 so you have a spare or enough for a two-pump job in one order. It is built to meet or exceed the quality of the original equipment part it replaces, giving a reliable seal between the fuel pump body and mounting surface to prevent fuel leaks and maintain proper pump pressure. At 0.25 inches thick, it is sized to match the OEM gasket profile it is designed to replace.\u003c\/p\u003e\u003cp\u003eThis gasket is manufactured as a direct cross-reference for OEM and aftermarket fuel pump gaskets used across multiple marine engine and sterndrive brands, including Chris-Craft, GLM, Mallory, Mercruiser, Pleasurecraft, Volvo Penta, and Yamaha part numbers. Confirm the OEM number on your existing gasket or fuel pump against the cross-reference list below before ordering to make sure 18-0889-9 is the correct match for your application.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-0889-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Thickness:\u003c\/strong\u003e 0.25 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e None\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282161880\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e Chris-Craft 16.50-00074, GLM 31360, Mallory 9-61041, Mercruiser 27-34213, Mercruiser 27-56883, FI500074, Pleasurecraft 3705042, Volvo Penta 3852095, Yamaha YSG-10114-14-1G\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned as a cross-reference replacement gasket for the OEM part numbers listed below; verify your existing gasket or fuel pump OEM number matches one of these before ordering.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eChris-Craft 16.50-00074\u003c\/li\u003e\n\u003cli\u003eGLM 31360\u003c\/li\u003e\n\u003cli\u003eMallory 9-61041\u003c\/li\u003e\n\u003cli\u003eMercruiser 27-34213\u003c\/li\u003e\n\u003cli\u003eMercruiser 27-56883\u003c\/li\u003e\n\u003cli\u003eFI500074\u003c\/li\u003e\n\u003cli\u003ePleasurecraft 3705042\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 3852095\u003c\/li\u003e\n\u003cli\u003eYamaha YSG-10114-14-1G\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-0889-9 fuel pump gasket fit?\u003c\/strong\u003e The 18-0889-9 gasket is manufactured as a direct cross-reference for OEM fuel pump gaskets used on Chris-Craft, Mercruiser, Pleasurecraft, Volvo Penta, and Yamaha equipment, among others. Check the OEM number stamped on your current gasket or fuel pump against the cross-reference list to confirm it matches before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-0889-9 the same as Mercruiser 27-34213?\u003c\/strong\u003e Yes, Sierra 18-0889-9 is cross-referenced to replace Mercruiser 27-34213 and 27-56883, along with several other OEM numbers from other brands.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow thick is this gasket?\u003c\/strong\u003e The Sierra 18-0889-9 fuel pump gasket measures 0.25 inches thick.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in a pack?\u003c\/strong\u003e This listing for 18-0889-9 includes a pack of 2 gaskets, so you get a spare on hand or enough for two pump installations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the gasket weigh?\u003c\/strong\u003e Each package of the Sierra 18-0889-9 fuel pump gasket weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or a generic aftermarket copy?\u003c\/strong\u003e It is a genuine Sierra International part, part number 18-0889-9, manufactured to meet or exceed the quality of the original equipment gasket it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the gasket made from?\u003c\/strong\u003e The dossier for 18-0889-9 does not specify a gasket material; buyers with material requirements should confirm compatibility with their fuel system before installing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this gasket if my old one is a GLM or Mallory part number?\u003c\/strong\u003e Yes, 18-0889-9 cross-references to GLM 31360 and Mallory 9-61041, so it can be used as a replacement if either of those numbers matches your original gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I install a fuel pump gasket like the 18-0889-9?\u003c\/strong\u003e The 18-0889-9 gasket seats between the fuel pump body and its mounting surface; remove the old gasket material completely, position the new gasket, and reinstall the fuel pump according to the pump manufacturer's torque specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order this product?\u003c\/strong\u003e An order of Sierra 18-0889-9 includes 2 fuel pump gaskets per package; it does not include the fuel pump itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this gasket fit Volvo Penta applications?\u003c\/strong\u003e Yes, the 18-0889-9 gasket cross-references Volvo Penta part number 3852095.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988086206683,"sku":"SIE-18-0889-9","price":4.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0889_lg__20930.1661520753.500.750.jpg?v=1785188611"},{"product_id":"sierra-18-7801-fuel-pump-kit-for-johnson-evinrude-28-100-hp-outboards-replaces-omc-379777","title":"Sierra 18-7801 Fuel Pump Kit, Replaces OMC 379777, for Johnson\/Evinrude Outboard Motors","description":"\u003cp\u003eThe Sierra 18-7801 Fuel Pump Kit restores fuel pumps built with a glass filter bowl and diaphragm, matching fuel pump model 305186. It is designed for use with select Johnson\/Evinrude 28 HP, 35 HP, 40 HP, 50 HP, 60 HP, 75 HP, 80 HP, 90 HP, and 100 HP outboard engines. The kit provides the wear parts needed to rebuild this style of fuel pump rather than replacing the entire assembly, giving boat owners a cost-effective way to restore proper fuel delivery when a pump develops a leak, a cracked diaphragm, or a clogged filter.\u003c\/p\u003e\u003cp\u003eInside the kit you get a Sierra 18-7826 fuel filter, a diaphragm, a gasket, and a filter bowl gasket, covering the components that typically wear out or need to be replaced as a set during a rebuild. Sierra manufactures each part to meet or exceed the specifications of the original equipment part it replaces, so the rebuilt pump performs to factory standards. Because fuel pump housings and diaphragm designs vary across outboard model years, this kit is fit specific; confirm your existing pump uses the glass filter bowl and diaphragm design (model 305186) before ordering to ensure proper fit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7801\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel Pump Repair Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999236517\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Sierra 18-7826 fuel filter, diaphragm, gasket, filter bowl gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Fuel Pump Model:\u003c\/strong\u003e 305186 (glass filter bowl and diaphragm style)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e Select Johnson\/Evinrude 28 HP, 35 HP, 40 HP, 50 HP, 60 HP, 75 HP, 80 HP, 90 HP, and 100 HP outboard engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e OMC 379777, GLM 40800\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 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\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSelect Johnson\/Evinrude 28 HP, 35 HP, 40 HP, 50 HP, 60 HP, 75 HP, 80 HP, 90 HP, and 100 HP outboard engines using a fuel pump with a glass filter bowl and diaphragm, model 305186\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC 379777\u003c\/li\u003e\n\u003cli\u003eGLM 40800\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7801 fuel pump kit include?\u003c\/strong\u003e The 18-7801 kit contains one Sierra 18-7826 fuel filter, one diaphragm, one gasket, and one filter bowl gasket, which are the parts needed to rebuild a compatible fuel pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboard engines is the 18-7801 kit designed for?\u003c\/strong\u003e It is designed for select Johnson\/Evinrude 28 HP, 35 HP, 40 HP, 50 HP, 60 HP, 75 HP, 80 HP, 90 HP, and 100 HP outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit fit any fuel pump on a compatible horsepower engine?\u003c\/strong\u003e No, the 18-7801 kit is designed specifically for fuel pumps with a glass filter bowl and diaphragm, matching fuel pump model 305186, so the fitment is fit specific rather than universal across all pumps on those engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-7801 kit cross-reference to?\u003c\/strong\u003e The Sierra 18-7801 kit is interchangeable with OMC 379777 and GLM 40800.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the fuel pump kit weigh?\u003c\/strong\u003e The Sierra 18-7801 fuel pump kit weighs 0.04 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-7801 kit packaging?\u003c\/strong\u003e The kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7801 kit a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra aftermarket kit manufactured to meet or exceed the specifications of the original equipment fuel pump parts it replaces, rather than a factory OMC part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to replace the entire fuel pump, or can I just use this kit?\u003c\/strong\u003e If your fuel pump uses the glass filter bowl and diaphragm design (model 305186), the 18-7801 kit lets you rebuild the pump with a new filter, diaphragm, and gaskets instead of replacing the whole assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my fuel pump matches this kit?\u003c\/strong\u003e Check that your pump is the glass filter bowl and diaphragm style, model 305186, and confirm against your engine's part numbers before ordering the 18-7801, since fit is specific to this pump design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat fuel filter is included in the 18-7801 kit?\u003c\/strong\u003e The kit includes one Sierra 18-7826 fuel filter as part of the rebuild components.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388032731,"sku":"SIE-18-7801","price":23.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7801_lg__42145.1558130378.500.750.jpg?v=1785188119"},{"product_id":"sierra-18-7800-fuel-pump-kit-for-johnson-evinrude-9-9-15-hp-outboard-1993-2006-replaces-omc-438616-433519","title":"Sierra 18-7800 Fuel Pump Kit - Replaces 438555, 433386 - Fits Johnson\/Evinrude 20-30 HP Outboards 1990-2000","description":"\u003cp\u003eThe Sierra 18-7800 Fuel Pump Kit is a complete fuel pump rebuild kit for Johnson\/Evinrude outboard motors rated 20-30 HP for the 1990-2000 model years. It is designed as a direct equivalent to the original equipment fuel pump, replacing OEM numbers 438555 and 433386 so the pump can be rebuilt in place rather than replaced as a whole assembly.\u003c\/p\u003e\u003cp\u003eThe kit contains the parts needed to restore fuel pump function: two check valves (18-7796), two O-rings (18-7413 and 18-7403), and a fuel pump gasket (18-0850). These components seal and regulate fuel flow through the pump body, and replacing them addresses common fuel pump issues such as loss of prime, fuel leaks, and inconsistent fuel delivery caused by worn seals and check valves. Each component is precision-built to fit the pump housing it is designed for.\u003c\/p\u003e\u003cp\u003eThis kit is intended for outboard owners and marine technicians performing a fuel pump rebuild rather than a full pump replacement, and it is sized and packaged as a lightweight kit for straightforward installation during routine fuel system maintenance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7800\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 20-30 HP Johnson\/Evinrude outboard motors, 1990-2000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 438555, 433386\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 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\u003eKit Contents:\u003c\/strong\u003e (2) Check Valve 18-7796, (1) O-Ring 18-7413, (1) O-Ring 18-7403, (1) Fuel Pump Gasket 18-0850\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e20-30 HP Johnson\/Evinrude outboard motors, 1990-2000\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e438555\u003c\/li\u003e\n\u003cli\u003e433386\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat outboard motors does the Sierra 18-7800 fuel pump kit fit?\u003c\/strong\u003e The 18-7800 kit fits Johnson\/Evinrude outboard motors rated 20-30 HP for the 1990-2000 model years.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-7800 kit replace?\u003c\/strong\u003e It replaces OEM numbers 438555 and 433386, allowing the fuel pump to be rebuilt without sourcing the original manufacturer part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a full fuel pump or a rebuild kit?\u003c\/strong\u003e It is a rebuild kit for the existing fuel pump, not a complete replacement pump assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat parts are included in the 18-7800 kit?\u003c\/strong\u003e The kit includes two check valves (18-7796), two O-rings (18-7413 and 18-7403), and a fuel pump gasket (18-0850).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-7800 fuel pump kit weigh?\u003c\/strong\u003e The kit weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the fuel pump kit packaging?\u003c\/strong\u003e The kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit work on a different horsepower outboard?\u003c\/strong\u003e The 18-7800 kit is designated for 20-30 HP Johnson\/Evinrude motors from 1990-2000; other horsepower ranges use different Sierra fuel pump kits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a fuel pump gasket included with the kit?\u003c\/strong\u003e Yes, one fuel pump gasket (18-0850) is included along with the check valves and O-rings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate this fuel pump kit is needed?\u003c\/strong\u003e Loss of engine prime, fuel leaks around the pump, or inconsistent fuel delivery typically indicate worn check valves, O-rings, or a gasket, which the 18-7800 kit addresses.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7800 kit include the pump housing itself?\u003c\/strong\u003e No, the kit contains the internal seal components (check valves, O-rings, and gasket) used to rebuild an existing fuel pump housing, not the housing itself.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388065499,"sku":"SIE-18-7800","price":20.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7800_lg__25032.1558130236.500.750.jpg?v=1785189156"},{"product_id":"sierra-18-7799-fuel-pump-diaphragm-kit-for-yamaha-outboards-contains-18-7842-18-7843-diaphragms","title":"Sierra 18-7799 Fuel Pump Diaphragm Kit for Yamaha Outboard Motors","description":"\u003cp\u003eThe Sierra 18-7799 Fuel Pump Diaphragm Kit is a replacement diaphragm set for Yamaha outboard motor fuel pumps. The kit contains two diaphragms, one 18-7842 Fuel Pump Diaphragm and one 18-7843 Fuel Pump Diaphragm, giving you both components needed to rebuild the fuel pump in a single package rather than sourcing each diaphragm separately.\u003c\/p\u003e\u003cp\u003eSierra builds this kit to meet or exceed the quality of the original equipment diaphragms it replaces, using precision-built components engineered to hold up in the marine environment. Sierra supplies parts to OEM engine manufacturers and boat builders, and this diaphragm kit is manufactured to the same fit and function standard as the factory originals it is designed to replace.\u003c\/p\u003e\u003cp\u003eThis is a compact, lightweight kit intended for outboard owners and marine technicians performing a fuel pump rebuild on applicable Yamaha outboard motors. Because it supplies both diaphragms in one kit, it simplifies ordering and ensures both wear components are replaced together during service.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7799\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Fuel Pump Diaphragm Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e (1) 18-7842 Fuel Pump Diaphragm and (1) 18-7843 Fuel Pump Diaphragm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\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 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282244842\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Yamaha outboard motor fuel pumps.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7799 Fuel Pump Diaphragm Kit include?\u003c\/strong\u003e The kit includes two diaphragms: one 18-7842 Fuel Pump Diaphragm and one 18-7843 Fuel Pump Diaphragm, giving you both components needed for a fuel pump rebuild in one package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the 18-7799 kit fit?\u003c\/strong\u003e The Sierra 18-7799 Fuel Pump Diaphragm Kit is designed for Yamaha outboard motor fuel pumps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many diaphragms come in this kit?\u003c\/strong\u003e Two diaphragms are included, part numbers 18-7842 and 18-7843, both packaged together under Sierra part number 18-7799.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7799 kit genuine OEM or aftermarket?\u003c\/strong\u003e It is a Sierra aftermarket replacement kit engineered to meet or exceed the quality of the original equipment diaphragms it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-7799 fuel pump diaphragm kit weigh?\u003c\/strong\u003e The Sierra 18-7799 Fuel Pump Diaphragm Kit weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the diaphragm kit?\u003c\/strong\u003e The Sierra 18-7799 kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I order the individual diaphragms separately instead of the full kit?\u003c\/strong\u003e The Sierra 18-7799 kit packages both the 18-7842 and 18-7843 diaphragms together as a single fuel pump diaphragm kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-7799 kit?\u003c\/strong\u003e The UPC for the Sierra 18-7799 Fuel Pump Diaphragm Kit is 808282244842.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit come with gaskets or other fuel pump hardware?\u003c\/strong\u003e No, the Sierra 18-7799 kit contains only the two diaphragms, 18-7842 and 18-7843; no additional gaskets or hardware are included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace fuel pump diaphragms as a kit rather than one at a time?\u003c\/strong\u003e Since both diaphragms in a Yamaha outboard fuel pump wear together, the Sierra 18-7799 kit supplies both the 18-7842 and 18-7843 diaphragms at once so the entire wear set is replaced during a single rebuild.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388131035,"sku":"SIE-18-7799","price":29.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7799_lg__90357.1558130177.500.750.jpg?v=1785188173"},{"product_id":"sierra-18-7805-fuel-pump-kit-for-chrysler-force-outboard-motors-replaces-oem-f24747-1","title":"Sierra 18-7805 Fuel Pump Kit, Replaces F24747-1, for Force 5 HP, 7.5 HP, 9.9\/15 HP Outboards","description":"\u003cp\u003eThe Sierra 18-7805 Fuel Pump Kit is a direct-fit replacement fuel pump kit built for Force outboard motors, engineered to meet or exceed the quality of the original equipment part it replaces. This kit is designed as a precision-built assembly, giving boat owners a reliable way to restore proper fuel delivery on aging Force outboards without sourcing discontinued original parts. It is interchangeable with the Chrysler\/Force\/US Marine F24747-1 and GLM 40860 fuel pump kits, so it can be used as a drop-in replacement wherever those part numbers are called for.\u003c\/p\u003e\u003cp\u003eSierra recommends pairing this fuel pump kit with a 10 micron fuel filter, which helps protect sensitive fuel delivery components from contamination and is especially important on outboards that have moved to fuel-injected systems downstream. The kit ships as a single unit count and is covered by Sierra's limited warranty, giving buyers confidence that the replacement meets original equipment specifications.\u003c\/p\u003e\u003cp\u003eFitment is specific to certain Force outboard motor horsepower ratings and model years, so it is important to confirm your engine's HP and year before ordering, since fuel pump kits are not universal across the full Force outboard lineup.\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 18-7805\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\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\u003eUPC:\u003c\/strong\u003e 808282259921\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Fuel Filter Micron Rating:\u003c\/strong\u003e 10 microns\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited Warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e F24747-1, GLM 40860, CHRYSLER FORCE F2A24747-1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eForce 5 HP outboard motors, 1988-1996\u003c\/li\u003e\n\u003cli\u003eForce 7.5 HP outboard motors, 1985\u003c\/li\u003e\n\u003cli\u003eForce 9.9 HP and 15 HP outboard motors, 1984-1998\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eF24747-1\u003c\/li\u003e\n\u003cli\u003eGLM 40860\u003c\/li\u003e\n\u003cli\u003eCHRYSLER FORCE F2A24747-1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat outboard motors does the Sierra 18-7805 fuel pump kit fit?\u003c\/strong\u003e This kit fits Force 5 HP outboard motors from 1988-1996, Force 7.5 HP outboards from 1985, and Force 9.9 HP and 15 HP outboards from 1984-1998.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7805 kit interchangeable with the original Force fuel pump?\u003c\/strong\u003e Yes, the Sierra 18-7805 is designed to be interchangeable with the Chrysler\/Force\/US Marine F24747-1 and GLM 40860 fuel pump kits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-7805 include an equivalent to the OEM Chrysler Force part number?\u003c\/strong\u003e Yes, it corresponds to Chrysler Force OEM equivalent part number F2A24747-1 in addition to the F24747-1 and GLM 40860 cross references.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-7805 fuel pump kit weigh?\u003c\/strong\u003e The Sierra 18-7805 fuel pump kit weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the fuel pump kit?\u003c\/strong\u003e The kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat fuel filter should be used with this fuel pump kit?\u003c\/strong\u003e A 10 micron fuel filter is recommended alongside the 18-7805 to prevent damage to sensitive inboard and outboard fuel injection systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this fuel pump kit work on a Force 25 HP or 35 HP motor?\u003c\/strong\u003e No, the Sierra 18-7805 is fitted to Force 5 HP, 7.5 HP, and 9.9\/15 HP outboards; larger Force horsepower ratings use different fuel pump kit part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7805 an OEM part or aftermarket replacement?\u003c\/strong\u003e The 18-7805 is a Sierra-built replacement fuel pump kit engineered to meet or exceed the original equipment part it replaces, rather than a factory Chrysler\/Force part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the 18-7805 fuel pump kit?\u003c\/strong\u003e The kit ships as a single fuel pump kit unit, with a unit count of one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7805 covered by a warranty?\u003c\/strong\u003e Yes, this fuel pump kit is backed by Sierra's limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the model year matter when ordering this fuel pump kit?\u003c\/strong\u003e Yes, fitment for the 18-7805 depends on both horsepower and model year: 1988-1996 for the 5 HP, 1985 for the 7.5 HP, and 1984-1998 for the 9.9\/15 HP Force outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with this fuel pump kit?\u003c\/strong\u003e The Sierra 18-7805 fuel pump kit carries UPC 808282259921.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388163803,"sku":"SIE-18-7805","price":9.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7805_lg__30528.1558130527.500.750.jpg?v=1785188889"},{"product_id":"sierra-18-7811-marine-fuel-pump-kit-replaces-mercury-89031a1-66599a1-for-mercury-mariner-outboards","title":"Sierra 18-7811 Fuel Pump Kit, Replaces Mercury Marine 89031A1, for Mercury\/Mariner Outboard Motors","description":"\u003cp\u003eThe Sierra 18-7811 Fuel Pump Kit is a replacement fuel pump rebuild kit designed for Mercury and Mariner outboard motors. It is built to restore proper fuel delivery on outboards using the original Mercury Marine 89031A1 fuel pump, giving boat owners a straightforward way to replace worn pump components without sourcing a full new pump assembly.\u003c\/p\u003e\u003cp\u003eThe kit includes the O-rings needed to properly seal the fuel pump during a rebuild, specifically O-Ring 18-7411 and O-Ring 18-7120. These sealing components are critical to preventing fuel leaks and maintaining consistent fuel pressure once the pump is reinstalled. Because fuel pump kits are fit specific, buyers should confirm part numbers against their existing pump before ordering to ensure proper fit.\u003c\/p\u003e\u003cp\u003eThis kit is intended as a direct equivalent to the OEM Mercury Marine 89031A1 fuel pump kit, and is cross-referenced to several other aftermarket part numbers for buyers searching by a different brand's catalog number. It ships as a single kit unit, making it a compact, low-cost solution for routine outboard fuel system maintenance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7811\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e O-Ring 18-7411, O-Ring 18-7120\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\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\u003eUnit Count:\u003c\/strong\u003e 1 kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999322968\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury outboard motors\u003c\/li\u003e\n\u003cli\u003eMariner outboard motors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 89031A1\u003c\/li\u003e\n\u003cli\u003eMercury 66599A1\u003c\/li\u003e\n\u003cli\u003eGLM 40350\u003c\/li\u003e\n\u003cli\u003eMallory 9-37756\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-7811 Fuel Pump Kit?\u003c\/strong\u003e The Sierra 18-7811 Fuel Pump Kit includes O-Ring 18-7411 and O-Ring 18-7120, the sealing components needed to rebuild a Mercury\/Mariner outboard fuel pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboard motors does the Sierra 18-7811 fit?\u003c\/strong\u003e This kit is designed for Mercury and Mariner outboard motors. Since fuel pump kits are fit specific, confirm the existing pump's part number before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-7811 replace the Mercury Marine 89031A1 fuel pump?\u003c\/strong\u003e Yes, the Sierra 18-7811 Fuel Pump Kit is a direct equivalent to the Mercury Marine 89031A1 fuel pump kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre there other part numbers that cross-reference to the Sierra 18-7811?\u003c\/strong\u003e The Sierra 18-7811 is interchangeable with Mercury 66599A1, GLM 40350, and Mallory 9-37756.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7811 Fuel Pump Kit weigh?\u003c\/strong\u003e The kit weighs 0.03 pounds, making it a lightweight, compact rebuild kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-7811 kit packaging?\u003c\/strong\u003e The Sierra 18-7811 Fuel Pump Kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7811 an OEM or aftermarket part?\u003c\/strong\u003e The Sierra 18-7811 is an aftermarket kit manufactured to match the specifications of the OEM Mercury Marine 89031A1 fuel pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many units come in one Sierra 18-7811 kit?\u003c\/strong\u003e Each Sierra 18-7811 Fuel Pump Kit is sold as a single kit containing one set of O-rings (18-7411 and 18-7120).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the Sierra 18-7811 kit stop fuel leaks from my outboard's fuel pump?\u003c\/strong\u003e Replacing worn O-rings with the ones in the 18-7811 kit, O-Ring 18-7411 and O-Ring 18-7120, is intended to restore a proper seal and address leaks caused by degraded pump gaskets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the Sierra 18-7811 kit on a Mariner outboard as well as a Mercury?\u003c\/strong\u003e Yes, the Sierra 18-7811 Fuel Pump Kit is designed to fit both Mercury and Mariner outboard motors that use the corresponding fuel pump.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388425947,"sku":"SIE-18-7811","price":10.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7811_lg__62074.1558130876.500.750.jpg?v=1785188631"},{"product_id":"fuel-pump-kit-for-mercury-outboard-replaces-55278a4-55278a3-sierra-18-7809","title":"Sierra 18-7809 Fuel Pump Kit for Mercury Outboard, Replaces 55278A4","description":"\u003cp\u003eThe Sierra 18-7809 Fuel Pump Kit is a replacement fuel pump built for Mercury Outboard engines, engineered to meet or exceed the specifications of the original equipment part it replaces. It functions as a direct equivalent to Mercury Marine OEM fuel pump 55278A4, giving boat owners a reliable way to restore correct fuel delivery without sourcing a factory-only part. The kit is constructed from aluminum and stainless steel for resistance to corrosion in the harsh marine environment, and it uses a bolted inlet connection paired with an FNPT outlet connection for a secure, leak-resistant fit. Operation is automatic and the pump is designed for tank-mount installation, matching the layout of the outboard fuel system it is intended to service.\u003c\/p\u003e\u003cp\u003eThis is a compact, precision-fit component at 0.39 x 0.39 x 0.39 inches and 0.02 pounds, so it installs into the existing fuel pump location without modification. Sierra manufactures this kit to the same standards it supplies to OEM engine builders and boat manufacturers, and the part is backed by Sierra's limited 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 18-7809\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Mercury Outboard Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum, Stainless 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 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e Bolted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Size:\u003c\/strong\u003e 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Size:\u003c\/strong\u003e 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Tank Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation Mode:\u003c\/strong\u003e Automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited Warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282259952\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine 55278A4\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7809 fuel pump kit replace?\u003c\/strong\u003e The 18-7809 kit is a direct equivalent to Mercury Marine OEM fuel pump 55278A4, built to meet or exceed the original part's specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the 18-7809 fuel pump kit fit?\u003c\/strong\u003e This fuel pump kit is designed for Mercury Outboard engines that originally used the Mercury Marine 55278A4 fuel pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-7809 made from?\u003c\/strong\u003e It is constructed from aluminum and stainless steel, chosen for corrosion resistance in marine use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-7809 fuel pump kit mounted?\u003c\/strong\u003e The pump uses a tank-mount design with a bolted inlet connection and an FNPT outlet connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the fuel pump operation manual or automatic?\u003c\/strong\u003e The Sierra 18-7809 fuel pump operates automatically once installed in the outboard's fuel system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-7809 fuel pump kit?\u003c\/strong\u003e It measures 0.39 x 0.39 x 0.39 inches, a compact size that fits the factory pump location without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7809 weigh?\u003c\/strong\u003e The kit weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this fuel pump genuine OEM or aftermarket?\u003c\/strong\u003e The Sierra 18-7809 is an aftermarket replacement engineered to meet or exceed the specifications of the Mercury Marine OEM part 55278A4 it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-7809 kit?\u003c\/strong\u003e The kit includes the fuel pump as a complete assembly, listed by Sierra as the Fuel Pump Kit component set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat fuel type is the 18-7809 pump designed for?\u003c\/strong\u003e It is designed for gasoline fuel systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-7809 come with a warranty?\u003c\/strong\u003e Yes, the fuel pump kit is backed by Sierra's limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size are the inlet and outlet connections on the 18-7809?\u003c\/strong\u003e Both the inlet and outlet connections on this fuel pump kit measure 0.5 inches, with a bolted inlet and an FNPT outlet.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388458715,"sku":"SIE-18-7809","price":6.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7809_lg__68110.1558130757.500.750.jpg?v=1785188221"},{"product_id":"fuel-pump-kit-for-yamaha-115-300-hp-2-stroke-v-4-v-6-outboards-1984-2004-replaces-oem-6e5-24411-00-00-mpn-18-7788","title":"Sierra 18-7788 Fuel Pump Kit, Replaces 6E5-24411-00-00, for Yamaha V-4 and V-6 Outboards","description":"\u003cp\u003eThe Sierra 18-7788 Fuel Pump Kit is a mechanical fuel pump rebuild kit for Yamaha V-4 and V-6 outboard engines, engineered to restore the fuel pump diaphragm and gasket to factory sealing performance. Fuel pump diaphragms and gaskets harden and crack with age and exposure to modern fuels, leading to fuel leaks, rough idle, hesitation, or a pump that will not draw fuel at all. This kit replaces those wear items so the pump can rebuild pressure and deliver a steady fuel supply to the carburetors.\u003c\/p\u003e\u003cp\u003eKit 18-7788 contains two components: a rear gasket (18-7843) with an OEM equivalent number of 6E5-24411-00-00, and a top diaphragm (18-7842) with an OEM equivalent number of 6E5-24471-00-00. Both parts are sized and shaped to match the original Yamaha fuel pump assembly, so the pump housing seals correctly and pumps fuel without bypass leakage once reassembled. The kit uses a hose barb inlet and a barbed outlet connection sized for 0.5 inch fuel line, consistent with the tank-mounted, mechanically operated fuel pump design used on these outboards.\u003c\/p\u003e\u003cp\u003eThis kit is intended for technicians and boat owners rebuilding an existing Yamaha V-4 or V-6 outboard fuel pump rather than replacing the entire pump assembly, offering a lower-cost repair path when the pump body itself is still serviceable.\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 18-7788\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e Yamaha V-4 and V-6 outboard engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Gasket (Rear) 18-7843, Diaphragm (Top) 18-7842\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 6E5-24411-00-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent OEM Numbers:\u003c\/strong\u003e Gasket (Rear) 6E5-24411-00-00; Diaphragm (Top) 6E5-24471-00-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Tank Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation Mode:\u003c\/strong\u003e Mechanical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection:\u003c\/strong\u003e Hose Barb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection:\u003c\/strong\u003e Barb, 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 6.75 x 6 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282105785\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eYamaha V-4 and V-6 outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e6E5-24411-00-00\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7788 Fuel Pump Kit fit?\u003c\/strong\u003e The 18-7788 kit fits Yamaha V-4 and V-6 outboard engines that use this fuel pump design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in kit 18-7788?\u003c\/strong\u003e The kit contains a rear gasket (part 18-7843) and a top diaphragm (part 18-7842) for the fuel pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM number does the 18-7788 kit replace?\u003c\/strong\u003e It replaces OEM number 6E5-24411-00-00 on Yamaha V-4 and V-6 outboard fuel pumps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo the individual gasket and diaphragm have their own OEM numbers?\u003c\/strong\u003e Yes: the rear gasket 18-7843 corresponds to OEM 6E5-24411-00-00, and the top diaphragm 18-7842 corresponds to OEM 6E5-24471-00-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include a full replacement fuel pump?\u003c\/strong\u003e No, the 18-7788 kit is a rebuild kit containing the gasket and diaphragm only, not a complete fuel pump assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the outlet connection on the fuel pump this kit services?\u003c\/strong\u003e The fuel pump uses a barbed outlet connection sized at 0.5 inches, paired with a hose barb inlet.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the fuel pump this kit services mechanical or electric?\u003c\/strong\u003e It is a mechanically operated, tank-mounted fuel pump, consistent with the 18-7788 rebuild kit's fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-7788 kit packaging?\u003c\/strong\u003e Item dimensions for the 18-7788 kit are 6.75 x 6 x 1 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7788 Fuel Pump Kit weigh?\u003c\/strong\u003e The kit weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace the diaphragm and gasket in my Yamaha fuel pump?\u003c\/strong\u003e Fuel pump diaphragms and gaskets harden and crack over time, which can cause fuel leaks or a loss of pump pressure; the 18-7788 kit replaces both wear parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-7788 a genuine Yamaha part or an aftermarket equivalent?\u003c\/strong\u003e 18-7788 is a Sierra part manufactured as an equivalent to OEM number 6E5-24411-00-00 for Yamaha V-4 and V-6 outboards, not a Yamaha-branded part.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388491483,"sku":"SIE-18-7788","price":13.91,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7788_lg__88555.1558132509.500.750.jpg?v=1785188658"},{"product_id":"sierra-18-7812-marine-fuel-pump-kit-for-mercury-mariner-outboards-replaces-mercury-89031a2-66599a2","title":"Sierra 18-7812 Fuel Pump Kit, Replaces Mercury 89031A2, for Mercury\/Mariner Outboard Motors","description":"\u003cp\u003eThe Sierra 18-7812 Fuel Pump Kit is a replacement fuel pump kit built for Mercury and Mariner outboard motors. Each kit is manufactured with precision components and is designed to meet or exceed the performance of the original equipment part it replaces. The kit includes O-rings 18-7411 and 18-7120, giving you the sealing components needed alongside the fuel pump parts for a proper rebuild or replacement.\u003c\/p\u003e\u003cp\u003eThis kit is engineered as a direct interchange for several OEM and aftermarket part numbers, making it a straightforward option when your original Mercury or Mariner fuel pump needs service. Because fit is specific to certain outboard applications, confirm your existing part number against the cross-reference list below before ordering to ensure you get the correct kit for your motor.\u003c\/p\u003e\u003cp\u003eSierra builds this fuel pump kit using plastic components sized at 0.39 x 0.39 x 0.39 inches, and the completed kit weighs 0.04 pounds. It is sold as a single kit (1 count) intended for outboard motor fuel system service.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7812\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e O-Rings 18-7411 and 18-7120\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\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 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282259969\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury\/Mariner outboard motors using a fuel pump matching OEM part number 89031A2 or the cross-references listed below\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 40360\u003c\/li\u003e\n\u003cli\u003eMallory 9-37751\u003c\/li\u003e\n\u003cli\u003eMercury 89031A2\u003c\/li\u003e\n\u003cli\u003e66599A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-7812 Fuel Pump Kit used for?\u003c\/strong\u003e The Sierra 18-7812 is a fuel pump kit designed for Mercury and Mariner outboard motors, providing the parts needed to service or rebuild the outboard's fuel pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-7812 kit?\u003c\/strong\u003e The kit includes O-rings 18-7411 and 18-7120 along with the fuel pump kit components manufactured by Sierra.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-7812 cross-reference to a Mercury OEM part number?\u003c\/strong\u003e Yes, the Sierra 18-7812 is built to interchange with Mercury OEM part number 89031A2 as well as 66599A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre there other brand equivalents to the Sierra 18-7812?\u003c\/strong\u003e GLM 40360 and Mallory 9-37751 are listed as interchangeable part numbers alongside the Sierra 18-7812 fuel pump kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-7812 Fuel Pump Kit made from?\u003c\/strong\u003e This fuel pump kit is made of plastic components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7812 weigh?\u003c\/strong\u003e The Sierra 18-7812 Fuel Pump Kit weighs 0.04 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-7812 kit?\u003c\/strong\u003e The kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7812 a genuine Mercury part or aftermarket?\u003c\/strong\u003e The 18-7812 is a Sierra-manufactured aftermarket fuel pump kit engineered to meet or exceed the performance of the Mercury OEM part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if the Sierra 18-7812 fits my outboard?\u003c\/strong\u003e Because fit is specific, check your existing fuel pump part number against the Sierra 18-7812 cross-reference list, which includes Mercury 89031A2, 66599A2, GLM 40360, and Mallory 9-37751, before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fuel pump kits come in one order of the Sierra 18-7812?\u003c\/strong\u003e Each order of the Sierra 18-7812 contains one fuel pump kit (1 unit count).\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388524251,"sku":"SIE-18-7812","price":12.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7812_lg__40805.1558130934.500.750.jpg?v=1785188286"},{"product_id":"fuel-pump-diaphragm-kit-for-chrysler-force-outboards-replaces-oem-21-42990a7-21-857005a1-sierra-18-7817","title":"Sierra 18-7817 Fuel Pump Diaphragm Kit, Replaces OEM 21-857005A1, for Mercury Outboard","description":"\u003cp\u003eThe Sierra 18-7817 Fuel Pump Diaphragm Kit is a rebuild kit for the fuel pump on Mercury outboard engines. It is built to meet or exceed the performance of the original equipment part it replaces, giving boat owners a reliable way to restore fuel pump function without replacing the entire pump assembly.\u003c\/p\u003e\u003cp\u003eThe kit centers on a diaphragm designed as a direct equivalent to OEM part 21-857005A1, along with a fiber washer (part 18-4261, OE 19643) used during reassembly. Installing a fresh diaphragm and washer addresses common fuel pump issues such as loss of prime, fuel leakage, or inconsistent fuel delivery that develop as the original diaphragm material ages and hardens from repeated exposure to fuel and heat in the engine compartment.\u003c\/p\u003e\u003cp\u003eThe kit is compact and lightweight, packaged at 7 x 6 x 1 inches and weighing 0.04 pounds, and is intended for the rear position of the fuel pump assembly. Sierra sources its parts to the same specifications used by original equipment engine manufacturers and boat builders, so the 18-7817 kit is intended as a drop-in equivalent for the fuel pump diaphragm it replaces on applicable Mercury outboard engines.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7817\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999323019\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Diaphragm; Fiber Washer (Part 18-4261, OE 19643)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Rear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 7 x 6 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Mercury outboard engines.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e21-857005A1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7817 Fuel Pump Diaphragm Kit include?\u003c\/strong\u003e The 18-7817 kit includes a diaphragm and a fiber washer (part 18-4261, OE 19643) needed to rebuild the fuel pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-7817 replace?\u003c\/strong\u003e Sierra 18-7817 replaces OEM part 21-857005A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is this fuel pump kit for?\u003c\/strong\u003e This kit is designed for Mercury outboard engines that use the fuel pump diaphragm covered by OEM part 21-857005A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-7817 kit weigh?\u003c\/strong\u003e The Sierra 18-7817 Fuel Pump Diaphragm Kit weighs 0.04 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of this kit?\u003c\/strong\u003e The 18-7817 kit ships in a package measuring 7 x 6 x 1 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere does the diaphragm in this kit install on the fuel pump?\u003c\/strong\u003e The 18-7817 diaphragm is used in the rear position of the fuel pump assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7817 kit genuine OEM or aftermarket?\u003c\/strong\u003e It is a Sierra-manufactured replacement kit engineered to meet or exceed the original equipment part it replaces, rather than a part sourced directly from the engine manufacturer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit include a gasket or just the diaphragm?\u003c\/strong\u003e The 18-7817 kit includes the diaphragm along with a fiber washer (part 18-4261, OE 19643); it does not list a separate gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the fiber washer part number included in this kit?\u003c\/strong\u003e The fiber washer included with the 18-7817 diaphragm kit is Sierra part 18-4261, cross-referenced to OE number 19643.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit stop a Mercury outboard fuel pump from losing prime or leaking?\u003c\/strong\u003e Installing the diaphragm and washer from the 18-7817 kit addresses fuel pump issues like lost prime and leakage that result from a worn original diaphragm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-7817 the correct number to search for this fuel pump kit?\u003c\/strong\u003e Yes, 18-7817 is the manufacturer part number for this Sierra fuel pump diaphragm kit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388688091,"sku":"SIE-18-7817","price":21.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7817_lg__13480.1558131134.500.750.jpg?v=1785188347"},{"product_id":"sierra-18-7823-fuel-pump-kit-for-omc-evinrude-johnson-6-8-9-9-15-hp-outboards-1981-1992-replaces-omc-397839","title":"Sierra 18-7823 Fuel Pump Kit for Johnson\/Evinrude Outboards, Replaces OMC 393088","description":"\u003cp\u003eThe Sierra 18-7823 Fuel Pump Kit is a replacement fuel pump kit engineered for Johnson\/Evinrude (OMC\/BRP) outboard fuel systems. It is designed as a direct equivalent to the original OMC 393088 fuel pump, restoring proper fuel delivery on outboards that use this pump configuration. The kit features a machined exterior and is positioned as a front-mounted fuel pump component in the outboard's fuel system.\u003c\/p\u003e\u003cp\u003eSierra builds its fuel system parts to meet or exceed the specifications of the original equipment they replace, and Sierra supplies OEM engine manufacturers and boat builders with parts on a regular basis, which supports consistent fit and function when replacing a worn or failing OEM fuel pump. This kit is compact and lightweight, making it straightforward to install as part of routine outboard fuel system maintenance or 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 18-7823\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Fuel Pump Repair Kits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 393088\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 4.8 x 4.2 x 0.2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Front\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999977250\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude (OMC\/BRP) outboard fuel system application\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e393088\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7823 Fuel Pump Kit replace?\u003c\/strong\u003e This kit replaces OEM fuel pump 393088 on applicable Johnson\/Evinrude (OMC\/BRP) outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7823 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-7823 is a Sierra aftermarket fuel pump kit built to meet or exceed the specifications of the original OMC 393088 fuel pump it replaces, not a Johnson\/Evinrude branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards is the Sierra 18-7823 designed for?\u003c\/strong\u003e It is designed for Johnson\/Evinrude (OMC\/BRP) outboard fuel systems that originally used OEM fuel pump 393088.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-7823 Fuel Pump Kit weigh?\u003c\/strong\u003e The Sierra 18-7823 Fuel Pump Kit weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this fuel pump kit?\u003c\/strong\u003e The 18-7823 measures 4.8 x 4.2 x 0.2 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere does this fuel pump mount on the outboard?\u003c\/strong\u003e The Sierra 18-7823 is positioned as the front fuel pump in the outboard's fuel system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the exterior finish of the 18-7823 fuel pump?\u003c\/strong\u003e It has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7823 include a UPC for ordering and inventory purposes?\u003c\/strong\u003e Yes, the Sierra 18-7823 Fuel Pump Kit carries UPC 030999977250.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I cross-reference the 18-7823 using the original OMC part number?\u003c\/strong\u003e Yes, the Sierra 18-7823 cross-references directly to OMC fuel pump number 393088.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7823 sold as a complete fuel pump or a repair kit?\u003c\/strong\u003e The 18-7823 is sold as a fuel pump kit intended to replace OEM fuel pump 393088 on Johnson\/Evinrude outboards.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388720859,"sku":"SIE-18-7823","price":12.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7823_lg__53854.1558131432.500.750.jpg?v=1785188154"},{"product_id":"sierra-18-7815-carburetor-repair-kit-for-mercury-mariner-outboards-replaces-mercury-1399-5137","title":"Sierra 18-7815 Fuel Pump Kit for Mercury\/Mariner Outboard Motors, Replaces Mercury Marine 1399-5137","description":"\u003cp\u003eThe Sierra 18-7815 Fuel Pump Kit is a replacement fuel pump built for Mercury and Mariner outboard motors. It is engineered to meet the fuel delivery demands of high-horsepower outboard engines while standing up to the harsh marine environment, and it meets or exceeds the performance of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003eThe pump body is constructed of aluminum for corrosion resistance and durability in marine use. It uses a hose barb inlet connection and a 3\/8 NPT threaded outlet connection, along with quick connect fittings for a secure, leak-resistant hookup during installation. The kit is designed as a vehicle-specific fit for Mercury\/Mariner outboard motor applications and is offered as a direct equivalent to Mercury Marine part number 1399-5137.\u003c\/p\u003e\u003cp\u003eSierra supplies fuel pump kits and other engine components to OEM engine manufacturers and boat builders, and the 18-7815 is backed by Sierra's limited 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 18-7815\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Mercury\/Mariner Outboard Motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\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 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e Hose Barb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Size:\u003c\/strong\u003e 0.38 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e 3\/8 NPT threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Size:\u003c\/strong\u003e 0.38 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Quick connect fittings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282259976, 779421101923\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eMercury\/Mariner outboard motor.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eMercury Marine 1399-5137\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7815 fuel pump kit fit?\u003c\/strong\u003e The Sierra 18-7815 is designed as a vehicle-specific fit for Mercury and Mariner outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7815 a genuine Mercury Marine part?\u003c\/strong\u003e No, the 18-7815 is a Sierra-branded replacement fuel pump kit built to meet or exceed the performance of the original equipment part, and it is offered as an equivalent to Mercury Marine part number 1399-5137.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the OEM equivalent number for this fuel pump?\u003c\/strong\u003e The Sierra 18-7815 fuel pump kit corresponds to Mercury Marine part number 1399-5137.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-7815 fuel pump made of?\u003c\/strong\u003e The pump body is made of aluminum, chosen for corrosion resistance in the marine environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7815 weigh?\u003c\/strong\u003e The Sierra 18-7815 fuel pump kit weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-7815 fuel pump kit?\u003c\/strong\u003e The 18-7815 measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of inlet and outlet connections does the 18-7815 use?\u003c\/strong\u003e The Sierra 18-7815 has a hose barb inlet connection measuring 0.38 inches and a 3\/8 NPT threaded outlet connection also measuring 0.38 inches, with quick connect fittings for installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-7815 come with a warranty?\u003c\/strong\u003e Yes, the Sierra 18-7815 fuel pump kit is backed by Sierra's limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the Sierra 18-7815 kit?\u003c\/strong\u003e The kit includes one fuel pump, sold as a single unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7815 suitable for high-horsepower outboard engines?\u003c\/strong\u003e Yes, the 18-7815 is engineered to meet the fuel delivery demands of today's high-horsepower outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the Sierra 18-7815 compare to the original Mercury part?\u003c\/strong\u003e Sierra states the 18-7815 meets or exceeds the performance of the original equipment fuel pump it replaces, which is Mercury Marine part number 1399-5137.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988389245147,"sku":"SIE-18-7815","price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7815_lg__73784.1558131084.500.750.jpg?v=1785188426"},{"product_id":"sierra-18-7837-fuel-pump-diaphragm-for-yamaha-outboard-replaces-mercury-84262m-and-yamaha-677-24411","title":"Sierra 18-7837 Fuel Pump Diaphragm for Yamaha Outboard Motors, Type 677, Replaces Yamaha 677-24411-02-00","description":"\u003cp\u003eThe Sierra 18-7837 Fuel Pump Diaphragm is a replacement diaphragm for Yamaha outboard fuel pumps, built to meet or exceed the quality of the original equipment part it replaces. The diaphragm is the flexing rubber component inside the fuel pump body that draws fuel from the tank and pushes it toward the carburetor as the pump's actuating arm cycles; when it cracks, stretches, or loses its seal, the outboard can suffer from hard starting, poor fuel delivery, or a fuel leak at the pump housing. This diaphragm is made of rubber and is sized at 0.25 x 4 x 6.5 inches to fit into the pump housing correctly.\u003c\/p\u003e\u003cp\u003eSierra part 18-7837 is the correct diaphragm for Yamaha outboards using engine type 677 with serial numbers ML-677-316416 and up. Confirming the type code and serial number on the powerhead before ordering ensures the correct diaphragm is installed, since fuel pump diaphragms are fit-specific across Yamaha engine type codes and serial breaks.\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 18-7837\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel Pump Diaphragm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.25 x 4 x 6.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Tank Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e Hose Barb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Yamaha outboard engine type 677, serial ML-677-316416 and up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mercury 84262M, Yamaha 677-24411-02-00, Yamaha 677-24411-01-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999323118\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eYamaha outboard motors, engine type 677, serial number ML-677-316416 and up\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury 84262M\u003c\/li\u003e\n\u003cli\u003eYamaha 677-24411-02-00\u003c\/li\u003e\n\u003cli\u003eYamaha 677-24411-01-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7837 diaphragm fit?\u003c\/strong\u003e The Sierra 18-7837 is built for Yamaha outboard motors with engine type 677 and serial numbers ML-677-316416 and up. Check the powerhead's type code and serial number before ordering to confirm this is the correct diaphragm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7837 diaphragm interchangeable with OEM Yamaha or Mercury numbers?\u003c\/strong\u003e Yes, Sierra 18-7837 is a direct cross-reference for Yamaha 677-24411-02-00, Yamaha 677-24411-01-00, and Mercury 84262M.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-7837 diaphragm made of?\u003c\/strong\u003e It is made of rubber, the flexible material needed to seal and pump fuel as the pump arm actuates inside the fuel pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-7837 diaphragm?\u003c\/strong\u003e The Sierra 18-7837 measures 0.25 x 4 x 6.5 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7837 diaphragm weigh?\u003c\/strong\u003e The Sierra 18-7837 fuel pump diaphragm weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this diaphragm fit any Yamaha outboard fuel pump?\u003c\/strong\u003e No. The Sierra 18-7837 is fit-specific to Yamaha engine type 677 with serial numbers ML-677-316416 and up; other type codes and serial ranges use different Sierra diaphragm part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-7837 diaphragm installed?\u003c\/strong\u003e It installs inside the fuel pump housing in place of the worn factory diaphragm, seating against the pump body so the pump arm can flex it to draw and push fuel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-7837 a genuine Yamaha part or an aftermarket replacement?\u003c\/strong\u003e It is an aftermarket replacement diaphragm manufactured by Sierra to meet or exceed the quality of the original Yamaha equipment it replaces, sold under Sierra's own part number 18-7837.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate the fuel pump diaphragm needs replacing?\u003c\/strong\u003e A worn or cracked diaphragm like the one the Sierra 18-7837 replaces typically causes hard starting, weak fuel delivery, or a fuel leak at the pump housing on affected Yamaha outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the Sierra 18-7837?\u003c\/strong\u003e The order includes one Sierra 18-7837 fuel pump diaphragm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I confirm 18-7837 is the right diaphragm for my Yamaha before ordering?\u003c\/strong\u003e Check the engine type code stamped on the powerhead and its serial number; Sierra 18-7837 applies specifically to type 677 with serial ML-677-316416 and up.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988389277915,"sku":"SIE-18-7837","price":9.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7837_lg__25510.1558131896.500.750.jpg?v=1785188155"},{"product_id":"marine-fuel-pump-kit-for-johnson-evinrude-25-55-hp-outboards-replaces-oem-398514-395867-1976-1989-non-vro-sierra-18-7821","title":"Sierra 18-7821 Fuel Pump Kit for Johnson\/Evinrude Outboard Motors, Replaces 398514, 395867","description":"\u003cp\u003eThe Sierra 18-7821 Fuel Pump Kit is a replacement fuel pump kit engineered for Johnson\/Evinrude outboard motors. It is built to meet or exceed the original equipment part it replaces, giving boat owners a reliable way to restore proper fuel delivery without sourcing an increasingly hard-to-find OEM pump. The kit is constructed of plastic components and is designed as a tank-mount fuel pump with threaded inlet and outlet connections, making it suited for direct replacement on compatible outboard fuel systems.\u003c\/p\u003e\u003cp\u003eThis kit ships as one complete fuel pump kit per package, sized at 0.39 x 0.39 x 0.39 inches and weighing 0.06 pounds. It is intended for use with Johnson\/Evinrude outboard motors, so boat owners should confirm their engine's existing pump part number against the cross-reference numbers below before ordering to ensure a correct fit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7821\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\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\u003eMounting Type:\u003c\/strong\u003e Tank Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Size:\u003c\/strong\u003e 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999977236\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for use with Johnson\/Evinrude outboard motors. Check your engine's existing pump part number to confirm compatibility before ordering.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e398514\u003c\/li\u003e\n\u003cli\u003e395867\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7821 Fuel Pump Kit fit?\u003c\/strong\u003e The Sierra 18-7821 Fuel Pump Kit is designed for use with Johnson\/Evinrude outboard motors. Confirm your engine's existing fuel pump part number against the cross-reference list before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-7821 replace?\u003c\/strong\u003e The 18-7821 replaces OEM numbers 398514 and 395867.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the box?\u003c\/strong\u003e One complete Sierra 18-7821 Fuel Pump Kit is included per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the fuel pump kit made of?\u003c\/strong\u003e The 18-7821 fuel pump kit is made of plastic.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7821 weigh?\u003c\/strong\u003e It weighs 0.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-7821 fuel pump kit?\u003c\/strong\u003e The kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7821 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-7821 is a Sierra aftermarket fuel pump kit built to meet or exceed the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of connections does this fuel pump kit use?\u003c\/strong\u003e The 18-7821 uses threaded inlet and outlet connections, with an NPT connector type and a 0.75 inch outlet connection size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-7821 fuel pump mounted?\u003c\/strong\u003e It uses a tank mount installation type.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7821 differ from Sierra's 18-7820 or 18-7822 fuel pump kits?\u003c\/strong\u003e Yes, the 18-7820, 18-7821, and 18-7822 are separate Sierra fuel pump kits with different OEM cross-reference numbers, so the correct part number must be matched to your engine rather than assumed interchangeable.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fuel pumps come in the 18-7821 kit?\u003c\/strong\u003e The kit includes one fuel pump kit per package, listed as a unit count of 1.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988389408987,"sku":"SIE-18-7821","price":27.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7821_lg__35371.1558131304.500.750.jpg?v=1785188253"},{"product_id":"marine-fuel-pump-kit-for-mercury-outboard-replaces-mercury-42909a3-42909a4-sierra-18-7818-1","title":"Sierra Fuel Pump Kit 18-7818-1 for Mercury 115 HP 4 Cyl Outboards, Replaces 42909A3, 42909A4","description":"\u003cp\u003eThe Sierra Fuel Pump Kit 18-7818-1 is a direct-fit replacement fuel pump kit built for Mercury 115 HP (4 cylinder) outboards with engine serial number B209468 and up. It restores reliable fuel delivery from tank to carburetor on applicable Mercury 4-cylinder powerheads, giving you an OE-specification alternative to the original Mercury Marine fuel pump kit at the point where age or wear causes weak fuel pressure, hard starting, or rough running.\u003c\/p\u003e\u003cp\u003eThe kit is built with a metal body and uses hose barb connections, with a hose barb inlet fitting and a barb-style outlet fitting, each sized at 1.27 centimeters, for compatible fuel line hookup. It is designed for gasoline fuel systems. Sierra parts in this line are noted as meeting OE specification, so installers can expect the same fit, form, and function as the original Mercury Marine components it replaces.\u003c\/p\u003e\u003cp\u003eBecause this kit is application-specific to the 115 HP 4-cylinder Mercury outboard with the stated serial number cutoff, confirm your engine's HP rating and serial number against the listed range before ordering to ensure correct fitment.\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 18-7818-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Mercury 115 HP (4 Cylinder) outboards, engine serial number B209468 and up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e Mercury Marine 42909A3, 42909A4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\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 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e Hose Barb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Size:\u003c\/strong\u003e 1.27 centimeters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e Barb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Size:\u003c\/strong\u003e 1.27 centimeters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury 115 HP (4 Cylinder) outboards, engine serial number B209468 and up\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 42909A3\u003c\/li\u003e\n\u003cli\u003eMercury Marine 42909A4\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7818-1 fuel pump kit fit?\u003c\/strong\u003e The Sierra 18-7818-1 fuel pump kit fits Mercury 115 HP outboards with a 4-cylinder engine, specifically units with engine serial number B209468 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-7818-1 a direct replacement for the Mercury OEM fuel pump kit?\u003c\/strong\u003e Yes, 18-7818-1 replaces Mercury Marine OEM fuel pump kits 42909A3 and 42909A4 and is built to meet OE specification for fit and function.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this kit cross-reference?\u003c\/strong\u003e This Sierra kit crosses over to Mercury Marine part numbers 42909A3 and 42909A4.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my Mercury 115 HP outboard uses this fuel pump kit?\u003c\/strong\u003e Check your engine's serial number: the 18-7818-1 kit applies to Mercury 115 HP 4-cylinder outboards with engine serial number B209468 or higher.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-7818-1 fuel pump kit made of?\u003c\/strong\u003e The fuel pump kit body is made of metal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size are the inlet and outlet connections on this fuel pump kit?\u003c\/strong\u003e Both the inlet (hose barb) and outlet (barb) connections on the 18-7818-1 kit measure 1.27 centimeters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7818-1 fuel pump kit weigh?\u003c\/strong\u003e The kit weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat fuel type is this fuel pump kit designed for?\u003c\/strong\u003e The 18-7818-1 fuel pump kit is designed for gasoline fuel systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the fuel pump kit?\u003c\/strong\u003e The kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this fuel pump kit fit a 6-cylinder Mercury outboard?\u003c\/strong\u003e No, the 18-7818-1 kit is designated specifically for the Mercury 115 HP 4-cylinder outboard application listed, not other cylinder configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra fuel pump kit meet OE specifications?\u003c\/strong\u003e Yes, the 18-7818-1 kit is noted as meeting OE specification, matching the performance of the original Mercury Marine parts it replaces.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988389507291,"sku":"SIE-18-7818-1","price":15.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__18749.1753840687.500.750.jpg?v=1785188867"},{"product_id":"fuel-pump-repair-kit-for-johnson-evinrude-outboard-replaces-393088-fits-4-6-hp-4-stroke-2003-2006","title":"EMP Fuel Pump Repair Kit 1399-01604, Replaces Johnson Evinrude 393088, for OMC\/BRP Outboard Motors","description":"\u003cp\u003eThis EMP fuel pump repair kit restores a Johnson\/Evinrude (OMC\/BRP) outboard fuel pump to proper working order without the cost of a full pump replacement. It is built as a direct cross-reference to OEM number 393088, so it drops into the fuel system to renew a worn or leaking pump using the original mounting and flow specifications. The kit is intended for boat owners and marine technicians performing routine fuel system maintenance or troubleshooting a fuel pump that is losing pressure, leaking, or causing hard starting and rough running.\u003c\/p\u003e\u003cp\u003eBecause it is a repair kit rather than a full assembly, it lets you rebuild the existing fuel pump housing in place, which keeps downtime and cost lower than sourcing a complete replacement pump. It is a lightweight, compact kit sized for straightforward installation as part of standard outboard fuel system servicing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e EMP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 1399-01604\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 840080452593\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.054 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel Pump Repair Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 393088\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eDesigned for Johnson\/Evinrude (OMC\/BRP) outboard motor fuel systems\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e393088\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the EMP fuel pump repair kit 1399-01604 include?\u003c\/strong\u003e The EMP 1399-01604 is a fuel pump repair kit for Johnson\/Evinrude (OMC\/BRP) outboard motors, sold as a kit to rebuild an existing fuel pump housing rather than a complete pump assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this kit a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e EMP 1399-01604 is an aftermarket repair kit manufactured to cross-reference OEM number 393088, not an original Johnson\/Evinrude branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does this kit replace?\u003c\/strong\u003e This kit replaces OEM number 393088, used in Johnson\/Evinrude (OMC\/BRP) outboard fuel pumps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the EMP 1399-01604 fuel pump repair kit weigh?\u003c\/strong\u003e It weighs 0.054 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit fit my outboard motor?\u003c\/strong\u003e EMP 1399-01604 is intended for Johnson\/Evinrude (OMC\/BRP) outboard fuel systems that originally used OEM part 393088; confirm your existing fuel pump uses that number before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to replace the whole fuel pump, or can I use this kit to repair it?\u003c\/strong\u003e This kit is designed to repair the existing fuel pump housing in place, so a full pump replacement is not necessary if the housing itself is still serviceable.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate I need a fuel pump repair kit like this one?\u003c\/strong\u003e Signs such as fuel leaks at the pump, loss of fuel pressure, hard starting, or rough running can point to a worn fuel pump that this repair kit is designed to address.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs installation of the 1399-01604 kit something I can do myself?\u003c\/strong\u003e The kit is sized for standard outboard fuel pump servicing and is intended to be installed into the existing fuel pump housing as part of routine maintenance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this product?\u003c\/strong\u003e The EMP fuel pump repair kit 1399-01604 has UPC 840080452593.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit come with a full fuel pump body?\u003c\/strong\u003e No, EMP 1399-01604 is a repair kit for rebuilding an existing fuel pump housing, not a complete fuel pump assembly.\u003c\/p\u003e","brand":"EMP","offers":[{"title":"Default Title","offer_id":48991280398555,"sku":"EMP-1399-01604","price":12.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/EMP_1399-01604_BRP_Fuel_Pump_Repair_Kit__01812.1722353438.500.750.jpg?v=1785329105"},{"product_id":"fuel-pump-repair-kit-21-42990a7-for-mercury-mariner-35-275-hp-square-pump-outboards-replaces-18-7817","title":"Engineered Marine Products Fuel Pump Repair Kit 1399-39020, Replaces 21-42990A7 18-7817, Mercury Mariner Square Pump Outboards","description":"\u003cp\u003eThis fuel pump repair kit from Engineered Marine Products is built to restore the fuel delivery system on Mercury Mariner outboards equipped with the square-style fuel pump. Rather than replacing the entire pump assembly, this kit supplies the wear components needed to bring a tired or leaking pump back to proper working condition, saving the cost of a full pump replacement. The kit is constructed from plastic and rubber components engineered to withstand continuous exposure to fuel and the vibration and heat found in an outboard engine compartment. Included in the kit is a fuel pump with filter, giving the installer the core parts needed to complete the rebuild in one job rather than sourcing individual pieces separately. Engineered Marine Products backs this kit with a 1 year manufacturer warranty, reflecting confidence in the materials and fit. This kit is intended for Mercury Mariner outboards using the square fuel pump design across a wide horsepower range, from smaller kickers up through larger offshore-rated outboards. Boat owners and marine technicians use kits like this one when a fuel pump is showing signs of reduced fuel pressure, hard starting, or a visible fuel leak at the pump diaphragm. Because the part restores original pump function using the manufacturer's specified components, it is a straightforward, cost-effective way to keep an outboard's fuel system reliable without replacing the whole pump housing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Engineered Marine Products\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 1399-39020\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Fuel Pump With Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic, Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 840080472386\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 1 year\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 21-42990A7, 18-7817\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Horsepower Range:\u003c\/strong\u003e 35, 40, 45, 50, 55, 60, 65, 75, 80, 90, 100, 115, 125, 135, 150, 175, 200, and 275 horsepower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Pump Type:\u003c\/strong\u003e Square fuel pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Type:\u003c\/strong\u003e Boat\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits Mercury Mariner outboards that use the square-style fuel pump, spanning 35 through 275 horsepower models.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003e21-42990A7, 18-7817\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the 1399-39020 fuel pump kit include?\u003c\/strong\u003e The 1399-39020 kit from Engineered Marine Products includes a fuel pump with filter, giving you the core components needed to rebuild the pump in one job.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboards does this fuel pump kit fit?\u003c\/strong\u003e This kit fits Mercury Mariner outboards that use the square-style fuel pump, covering models from 35 up to 275 horsepower.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 1399-39020 replace OEM part 18-7817?\u003c\/strong\u003e Yes, part 1399-39020 is a direct replacement for OEM number 18-7817 as well as 21-42990A7.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this kit compatible with 21-42990A7?\u003c\/strong\u003e Yes, the Engineered Marine Products kit 1399-39020 replaces OEM number 21-42990A7.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the fuel pump kit made from?\u003c\/strong\u003e The 1399-39020 fuel pump repair kit is made from plastic and rubber components designed to handle continuous fuel exposure and engine compartment heat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the fuel pump kit weigh?\u003c\/strong\u003e The 1399-39020 fuel pump repair kit weighs 0.04 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine or aftermarket fuel pump kit?\u003c\/strong\u003e This is an aftermarket kit manufactured by Engineered Marine Products, built to replace the OEM square fuel pump on compatible Mercury Mariner outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit come with a warranty?\u003c\/strong\u003e Yes, the 1399-39020 fuel pump kit is backed by a 1 year manufacturer warranty from Engineered Marine Products.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this kit to fix a leaking fuel pump?\u003c\/strong\u003e Yes, this kit is designed for rebuilding a Mercury Mariner square fuel pump that is leaking or losing fuel pressure, using the included pump and filter components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat horsepower engines can use the 1399-39020 kit?\u003c\/strong\u003e The 1399-39020 kit is compatible with square-pump Mercury Mariner outboards ranging from 35 to 275 horsepower.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to replace the whole fuel pump assembly or just this kit?\u003c\/strong\u003e The 1399-39020 kit lets you rebuild the existing square fuel pump on your Mercury Mariner outboard rather than purchasing an entirely new pump assembly.\u003c\/p\u003e","brand":"EMP","offers":[{"title":"Default Title","offer_id":48991280693467,"sku":"EMP-1399-39020","price":96.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/EMP_1399-39020_Mercury_Fuel_Pump_Repair_Kit__52981.1722518117.500.750.jpg?v=1785188788"},{"product_id":"fuel-pump-repair-kit-18-7818-1-for-mercury-115-hp-4-cylinder-outboards-serial-b209468-up","title":"EMP Fuel Pump Repair Kit 1399-39030, Replaces Mercury 18-7818-1, Fits 115 HP 4-Cylinder Outboards Serial B209468 \u0026 Up","description":"\u003cp\u003eThe EMP Fuel Pump Repair Kit 1399-39030 is a replacement fuel pump rebuild kit for Mercury 115 HP 4-cylinder outboard engines, serial number B209468 and up. It is built as a direct equivalent to the Mercury Quicksilver fuel pump kit 18-7818-1, giving outboard owners and marine repair shops a way to restore fuel pump function on qualifying engines without sourcing the original manufacturer part. Fuel pump diaphragms and internal components wear over time from constant flexing and exposure to ethanol-blended fuel, leading to low fuel pressure, hard starting, stalling at idle, or a rich\/lean running condition. This kit is intended to service the fuel pump on the applicable Mercury 115 HP 4-cylinder powerhead so the pump can be rebuilt in place rather than replaced as a complete assembly.\u003c\/p\u003e\u003cp\u003eBecause fitment on outboard fuel pumps is tied to the engine's serial number range, confirm the engine falls within serial number B209468 and up before ordering, as earlier serial numbers may use a different fuel pump kit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e EMP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 1399-39030\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Mercury Outboard Fuel Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e Mercury 115 HP, 4 Cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Number Range:\u003c\/strong\u003e B209468 and up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.033 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 840080472164\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury 115 HP, 4 Cylinder outboard, serial number B209468 and up\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e18-7818-1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engine does the EMP 1399-39030 fuel pump kit fit?\u003c\/strong\u003e It fits Mercury 115 HP, 4-cylinder outboard engines with serial number B209468 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 1399-39030 replace the Mercury 18-7818-1 fuel pump kit?\u003c\/strong\u003e Yes, EMP 1399-39030 is a direct replacement for Mercury Quicksilver fuel pump kit 18-7818-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this fuel pump kit weigh?\u003c\/strong\u003e The EMP fuel pump repair kit 1399-39030 weighs 0.033 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my engine's serial number qualifies for this kit?\u003c\/strong\u003e Check the serial number plate on the Mercury 115 HP 4-cylinder powerhead; this kit, 1399-39030, applies to serial number B209468 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this an OEM Mercury part or an aftermarket replacement?\u003c\/strong\u003e EMP 1399-39030 is an aftermarket fuel pump repair kit manufactured as a functional replacement for Mercury part 18-7818-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate I need to rebuild my outboard's fuel pump?\u003c\/strong\u003e Hard starting, stalling at idle, and low fuel pressure on a Mercury 115 HP 4-cylinder outboard commonly point to a worn fuel pump that this repair kit, 1399-39030, is designed to service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this kit on a 6-cylinder Mercury outboard?\u003c\/strong\u003e No, EMP 1399-39030 is specified for the 115 HP 4-cylinder Mercury outboard, not 6-cylinder engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this product?\u003c\/strong\u003e The EMP Fuel Pump Repair Kit 1399-39030 has UPC 840080472164.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit work on engines with a serial number below B209468?\u003c\/strong\u003e This is not confirmed; 1399-39030 is specified for serial number B209468 and up, so an engine below that range may require a different fuel pump kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat part number should I reference when ordering this kit?\u003c\/strong\u003e Order using EMP part number 1399-39030, which cross-references to Mercury 18-7818-1.\u003c\/p\u003e","brand":"EMP","offers":[{"title":"Default Title","offer_id":48991280890075,"sku":"EMP-1399-39030","price":13.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/EMP_1399-39030_Mercury_Mariner_Fuel_Pump_rebuild_kit__38287.1722346417.500.750.jpg?v=1785329105"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/collections\/EMP_1399-39030_Mercury_Mariner_Fuel_Pump_rebuild_kit__38287.1722346417.500.750.jpg?v=1785356550","url":"https:\/\/www.goodvibesmarina.com\/collections\/gvcat-engine-parts-systems-fuel-system-fuel-pumps-fuel-pump-repair-kits-diaphragms.oembed","provider":"Good Vibes Marina","version":"1.0","type":"link"}