{"product_id":"water-pump-impeller-kit-fits-yamaha-2-stroke-40hp-replaces-6f5-w0078-a0-00-679-w0078-a1-00","title":"Water Pump Impeller Kit – Fits Yamaha 2-Stroke 40HP (Replaces 6F5-W0078-A0-00, 679-W0078-A1-00)","description":"\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller Kit – Fits Yamaha 2-Stroke 40HP (Replaces 6F5-W0078-A0-00, 679-W0078-A1-00)\u003c\/strong\u003e is designed for Yamaha 2-stroke 40HP outboard engines produced from 1990–1997, including CV40 and C40 models. It contains all necessary components for a complete water pump service, ensuring your cooling system functions reliably.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for Yamaha OEM part numbers 6F5-W0078-A0-00 and 679-W0078-A1-00, as well as Sierra equivalents 18-3374, 18-3397, and 18-3398.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for direct OEM-replacement installation.\u003c\/li\u003e\n\u003cli\u003eFeatures a housing made from marine-grade alloy that matches original specifications.\u003c\/li\u003e\n\u003cli\u003eIncludes all essential gaskets, seals, and hardware for a full rebuild.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6F5-W0078-A0-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3374\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3397\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3398\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis kit is compatible with a range of Yamaha 40HP 2-stroke outboard models. Please verify your specific model and year before purchasing.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eCV40ELD\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1990\u003c\/td\u003e\n\u003ctd\u003e6F5-W0078-A0-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eCV40EL\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1990\u003c\/td\u003e\n\u003ctd\u003e6F5-W0078-A0-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40ELR\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1991–1997\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40MLH\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–1995\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40MSH\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1992–1997\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40PLR\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1992–1997\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40ESH\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40MSHU\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40MSHT\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40ELRU\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40PLRT\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40ELRQ\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1992\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40PLRU\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40ELRS\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40PLRQ\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1992\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40MSHV\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40MLHS\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40PLRR\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1993\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40PLRS\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40ELRT\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40MLHT\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40MSHR\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1993\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40MSHS\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40PLRV\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40MSHQ\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1992\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40ELRR\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1993\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40ELRV\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC40ESHV\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997\u003c\/td\u003e\n\u003ctd\u003e679-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eOutboard Water Pump Impeller Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM Replacement\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade alloy (specification matches OEM)\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Water Seal Damper 2 (663-44366-00-00\/663-44366-01-00)\u003c\/li\u003e\n\u003cli\u003e1 × Insert Cup (676-44322-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Impeller (6F5-44352-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Water Pump Outer Gasket (676-44315-A0-00\/676-44315-A1-00)\u003c\/li\u003e\n\u003cli\u003e1 × Wear Plate\/Cartridge Outer Plate (676-44323-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Water Pump Gasket\/Cartridge Gasket (676-44324-A0-00\/676-44324-A1-00)\u003c\/li\u003e\n\u003cli\u003e1 × Water Pump Gasket (679-44316-A0-00)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2\u003c\/span\u003e × Bolts (97095-08055-00)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2\u003c\/span\u003e × Bolts (97095-08045-00)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e4\u003c\/span\u003e × Washers (92990-08600-00)\u003c\/li\u003e\n\u003cli\u003e1 × Woodruff Key\/Impeller Key (90280-04M00-00)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the spark plug leads and battery for safety.\u003c\/li\u003e\n\u003cli\u003eUnbolt and carefully slide the lower unit (gearcase) off the outboard's driveshaft housing.\u003c\/li\u003e\n\u003cli\u003eLocate and unbolt the water pump housing cover. Take note of bolt positions.\u003c\/li\u003e\n\u003cli\u003eRemove the old impeller, gaskets, wear plate, and insert cup. Clean any debris or corrosion from the housing and mating surfaces.\u003c\/li\u003e\n\u003cli\u003eInstall the new gaskets, wear plate, and insert cup from the kit.\u003c\/li\u003e\n\u003cli\u003eSlide the new woodruff key onto the driveshaft and install the new impeller, turning the driveshaft clockwise to seat the vanes correctly.\u003c\/li\u003e\n\u003cli\u003eLightly grease the inside of the housing and the impeller with marine lubricant.\u003c\/li\u003e\n\u003cli\u003eReinstall the water pump housing and tighten the bolts to the manufacturer's specified torque.\u003c\/li\u003e\n\u003cli\u003eReattach the lower unit, ensuring the driveshaft, shift shaft, and water tube are correctly aligned.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery and spark plug leads. Start the engine and verify a strong, consistent water stream from the telltale outlet.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon signs include the engine overheating at idle or low speeds, a weak or intermittent water stream from the \"telltale\" outlet, or an impeller that is visibly cracked, brittle, or has missing vanes upon inspection.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace the water pump impeller?\u003c\/summary\u003e\u003cp\u003eFor preventative maintenance, we recommend replacing the impeller every 1–2 years or every 100–200 hours of use, whichever comes first. Replacement is especially important for boats operated frequently in saltwater or silty conditions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this kit fit a C40 model made after 1997?\u003c\/summary\u003e\u003cp\u003eNo, this particular kit is specified to fit Yamaha C40 models only from 1991 through 1997. It is not confirmed for models made in other years. Always verify your engine's model and year before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between OEM parts 6F5-W0078-A0-00 and 679-W0078-A1-00?\u003c\/summary\u003e\u003cp\u003ePart number 6F5-W0078-A0-00 was specified for the 1990 CV40 model, while 679-W0078-A1-00 was used for C40 models from 1991–1997. This aftermarket kit is engineered to serve as a direct, comprehensive replacement for both OEM part numbers.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit include the water pump housing?\u003c\/summary\u003e\u003cp\u003eNo, this is an impeller rebuild kit. It contains the essential service components like the impeller, wear plate, insert cup, gaskets, and hardware, but it does not include the upper or lower water pump housing assembly.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhy do some gaskets list two part numbers?\u003c\/summary\u003e\u003cp\u003eThe different part number suffixes (e.g., A0 vs. A1) typically reflect minor revisions or a change in supplier by the original manufacturer over the years. The components in our kit are designed to be fully compatible across all specified model years.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part or an aftermarket replacement?\u003c\/summary\u003e\u003cp\u003eThis listing is for a high-quality aftermarket replacement part, not an OEM component. It is built to meet or exceed OEM-level specifications using comparable materials and manufactured in an ISO 9002 certified facility, with batch inspections for quality assurance.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow fast is shipping and what does it cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly, with typical transit times of 5–15 days for most regions. Standard shipping is free on all orders. Expedited shipping options, if available for your location, will be presented at checkout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images and specifications against your original part before installation. If anything differs—even if your model appears compatible—do not purchase or install the part.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement part, not an original equipment manufacturer (OEM) component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is highly recommended for safety, proper function, and to prevent engine damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to strict OEM-level tolerances and rigorously tested for real-world performance and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — We offer free standard delivery to most regions worldwide, with typical transit times of just 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — By working directly with our manufacturing partners, we provide fair, transparent pricing without compromising on materials or quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723971924283,"sku":"SIE-22KY013","price":49.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Yamaha_40HP_2-Stroke_679-6F5-W0078-A0_-_JLM_MARINE-8289223.jpg?v=1763038830","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-kit-fits-yamaha-2-stroke-40hp-replaces-6f5-w0078-a0-00-679-w0078-a1-00","provider":"SeaSierra","version":"1.0","type":"link"}