{"product_id":"water-pump-impeller-kit-fits-yamaha-6hp-8hp-replaces-6e5-44311","title":"Water Pump Impeller Kit – Fits Yamaha 6HP \/ 8HP (Replaces 6E5-44311)","description":"\u003csection\u003e\n\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\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\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller Kit – Fits Yamaha 6HP \/ 8HP Outboard Motors (Replaces 6E5-44311)\u003c\/strong\u003e provides all necessary components to restore your engine's cooling system. It is designed for Yamaha 2-Stroke 6HP and 8HP models from 1986 and newer (including C, M, MSH, CMH, CWH, MBK), and select 4-Stroke 115HP and 130HP models.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct interchange for Yamaha part numbers 6E5-44311, 6E5-W0078-A1-00, 6N0-W0078-A0-00, 6E5-W0078-01-00, and 6E5-W0078-02, as well as Sierra 18-3460 and Mercury\/Mariner 11656T\/11656M.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for direct-fit installation.\u003c\/li\u003e\n\u003cli\u003eManufactured in an ISO9002 certified facility to meet OEM specifications.\u003c\/li\u003e\n\u003cli\u003eIncludes key components like the impeller, housing, gaskets, and hardware.\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\u003e6E5-44311\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6E5-W0078-A1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6N0-W0078-A0-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6E5-W0078-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6E5-W0078-02\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3460\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e11656T\/11656M\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\u003eFor Yamaha owners, please verify your specific model and year against the compatible series listed. This kit is primarily for 2-stroke 6\/8 HP models but fits some 4-stroke engines as well.\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        \u003cth\u003eNotes\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\u003e6HP\/C\/MSH\/CMH\/CWH\/MBK\u003c\/td\u003e\n        \u003ctd\u003e6\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2007–and newer\u003c\/td\u003e\n        \u003ctd\u003e6E5-W0078-A1-00\u003c\/td\u003e\n        \u003ctd\u003e\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\u003eWater Pump Impeller Repair Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eVaries by manufacturer\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eManufactured to OEM specifications in ISO9002 certified factory (JLM Marine)\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Impeller (6E5-44352-01)\u003c\/li\u003e\n\u003cli\u003e1 x Wear Plate (6E5-44323-00)\u003c\/li\u003e\n\u003cli\u003e1 x Gasket (6E5-44315-A0)\u003c\/li\u003e\n\u003cli\u003e1 x Cartridge Insert (6E5-44322-40) \u003cspan style=\"color:#d0021b;\"\u003e(1\" shaft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e1 x O-ring (93210-86M38)\u003c\/li\u003e\n\u003cli\u003e1 x O-ring (93210-37M67)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e4 x\u003c\/span\u003e Bolts (97080-08045)\u003c\/li\u003e\n\u003cli\u003e1 x Dowel Pin (93606-12019)\u003c\/li\u003e\n\u003cli\u003e1 x Woodruff Key (90280-04M05)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery and remove the engine cover.\u003c\/li\u003e\n\u003cli\u003eShift the outboard into neutral and remove the lower unit mounting bolts.\u003c\/li\u003e\n\u003cli\u003eCarefully lower and separate the lower unit from the upper casing.\u003c\/li\u003e\n\u003cli\u003eLocate and unbolt the water pump housing.\u003c\/li\u003e\n\u003cli\u003eRemove the old impeller, gasket, wear plate, and O-rings. Note their orientation.\u003c\/li\u003e\n\u003cli\u003eClean all mating surfaces thoroughly, removing any old gasket material.\u003c\/li\u003e\n\u003cli\u003eInstall the new wear plate, gasket, and Woodruff key on the driveshaft.\u003c\/li\u003e\n\u003cli\u003eSlide the new impeller onto the shaft, rotating it clockwise to seat the vanes correctly.\u003c\/li\u003e\n\u003cli\u003eInstall the new cartridge insert and O-rings in the housing.\u003c\/li\u003e\n\u003cli\u003eReassemble the pump housing and tighten bolts to the manufacturer's torque specifications.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit, ensuring the water tube and drive shaft are aligned.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery and test the engine using a water supply (\"muffs\") to verify proper water flow from the tell-tale outlet.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if this kit fits my specific Yamaha engine?\u003c\/summary\u003e\n  \u003cp\u003eThe best way to ensure compatibility is to match your engine's model and year to the ranges listed in the Engine \u0026amp; Model Compatibility table. You can also compare the OEM part number stamped on your existing water pump components to the interchanges listed in our Part Number Matrix.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing water pump impeller?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include a weak or non-existent water stream from the \"tell-tale\" outlet, engine overheating alarms, and reduced engine performance. It is crucial to address these signs immediately to prevent severe engine damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should the water pump impeller be replaced?\u003c\/summary\u003e\n  \u003cp\u003eFor preventative maintenance, most manufacturers recommend replacing the impeller every 1-2 years or every 100-200 hours of operation, whichever comes first. Usage in saltwater or sandy\/murky water may require more frequent inspections and replacements.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eThis kit is listed as similar to others but with a different cartridge. Why?\u003c\/summary\u003e\n  \u003cp\u003eThis kit contains a cartridge insert (6E5-44322-40) specifically for a 1\" shaft. While many components overlap with other Yamaha kits like 6N6-W0078-02, the cartridge is the key difference. Always verify your shaft diameter or original part numbers before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\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 OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718264262971,"sku":"23KY096","price":63.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Yamaha_6_-_8_HP_6E5-44311_-_JLM_MARINE-8288986.jpg?v=1762958464","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-kit-fits-yamaha-6hp-8hp-replaces-6e5-44311","provider":"SeaSierra","version":"1.0","type":"link"}