{"product_id":"water-pump-impeller-repair-kit-fits-yamaha-f50a-4-stroke-50hp-replaces-6bg-w0078-01","title":"Water Pump Impeller Repair Kit – Fits Yamaha F50A 4-Stroke 50HP (Replaces 6BG-W0078-01)","description":"\u003csection\u003e\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 aftermarket \u003cstrong\u003eWater Pump Impeller Repair Kit – Fits Yamaha F50A 4-Stroke 50HP (Replaces 6BG-W0078-01)\u003c\/strong\u003e provides the essential components to restore your outboard’s cooling system. It is designed specifically for Yamaha F50A 4-Stroke 50HP models from 1991–2007 and also fits select E40X, 40X (2-Stroke), and F30A\/F40B 4-Stroke models.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Yamaha part numbers 6BG-W0078-00-00 and 6BG-W0078-01-00, as well as aftermarket equivalent HJ YHJB-6BG, ensuring a precise fit and reliable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls as a direct OEM-equivalent replacement.\u003c\/li\u003e\n\u003cli\u003eManufactured in an ISO9002 certified facility to meet OEM specifications.\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\u003e6BG-W0078-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6BG-W0078-01-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAftermarket\u003c\/td\u003e\n        \u003ctd\u003eHJ YHJB-6BG\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 engines, please verify your model and year range to ensure correct fitment. This kit is primarily for the F50A series but may fit other models listed.\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\u003eF50A\u003c\/td\u003e\n        \u003ctd\u003e50\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1991–2007\u003c\/td\u003e\n        \u003ctd\u003e6BG-W0078-01-00\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 OEM replacement\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eManufactured to OEM specifications in an ISO9002 certified factory\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cp\u003eThe standard repair kit includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Impeller (6H4-44352-02)\u003c\/li\u003e\n\u003cli\u003e1 x Water Pump Repair Kit (6BG-W0078-00-00)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen purchased as part of the complete Yamaha Maintenance Kit for F50A (1991–2007), the following additional items are also included:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2 x Drain Gaskets (90430-08020)\u003c\/li\u003e\n\u003cli\u003e4 x Anodes (PAF4-04070003)\u003c\/li\u003e\n\u003cli\u003e4 x Spark Plugs (NGKDPR6EB-9)\u003c\/li\u003e\n\u003cli\u003e1 x Anode (62Y-11325-00A)\u003c\/li\u003e\n\u003cli\u003e1 x Anode (67C-45251-00A)\u003c\/li\u003e\n\u003cli\u003e1 x Anode (67C-45371-00A)\u003c\/li\u003e\n\u003cli\u003e1 x Anode (688-45251-01A)\u003c\/li\u003e\n\u003cli\u003e1 x Anode (6E0-45251-11A)\u003c\/li\u003e\n\u003cli\u003e1 x Cotter Pin (91490-30025)\u003c\/li\u003e\n\u003cli\u003e1 x Fuel Filter VST (6BG-13915-00)\u003c\/li\u003e\n\u003cli\u003e1 x Fuel Filter (6C5-24251-00)\u003c\/li\u003e\n\u003cli\u003e1 x Fuel Filter (6D8-WS24A-00)\u003c\/li\u003e\n\u003cli\u003e1 x Gasket (PAF15-07010022)\u003c\/li\u003e\n\u003cli\u003e1 x Oil Filter (5GH-13440-60)\u003c\/li\u003e\n\u003cli\u003e1 x O-Ring (PAGB\/T3452.1-32.5X1.8)\u003c\/li\u003e\n\u003cli\u003e1 x Thermostat (PAF15-07000031)\u003c\/li\u003e\n\u003cli\u003e1 x Washer (PAF15-04000003)\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 for safety.\u003c\/li\u003e\n  \u003cli\u003eUnbolt and carefully lower the lower unit from the engine's midsection.\u003c\/li\u003e\n  \u003cli\u003eWith the lower unit on a workbench, remove the water pump housing bolts and lift the housing.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller, wear plate, gaskets, and seals. Note their orientation.\u003c\/li\u003e\n  \u003cli\u003eThoroughly clean all mating surfaces, removing any old gasket material or corrosion.\u003c\/li\u003e\n  \u003cli\u003eInstall the new components from the kit in the reverse order of removal.\u003c\/li\u003e\n  \u003cli\u003eSeat the new impeller key correctly and rotate the driveshaft to align the impeller vanes.\u003c\/li\u003e\n  \u003cli\u003eReassemble the housing and torque bolts to the manufacturer-specified values.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit, reconnect controls, and secure it.\u003c\/li\u003e\n  \u003cli\u003eTest the engine in water to confirm a steady stream from the tell-tale, indicating proper function.\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 engine model?\u003c\/summary\u003e\n  \u003cp\u003eThis kit is designed for the Yamaha models listed in the compatibility table. Please cross-reference your engine's model, horsepower, and year range with the table. For confirmation, check the OEM part number stamped on your existing components against the numbers in the Part Number Matrix.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs of a failing water pump impeller?\u003c\/summary\u003e\n  \u003cp\u003eKey symptoms include the engine overheating at idle or low speeds, a weak or inconsistent water stream from the tell-tale (water outlet), or a brittle or cracked appearance on the existing impeller vanes upon inspection.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should I replace the water pump impeller?\u003c\/summary\u003e\n  \u003cp\u003eFor preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of operation, depending on usage conditions (e.g., saltwater vs. freshwater).\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between an OEM and an aftermarket kit?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. The parts are manufactured in an ISO 9002 certified facility and batch-inspected for consistency and quality, offering a reliable alternative at a better value.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are your shipping speeds and costs?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most orders, with expedited options available at checkout where applicable.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is your warranty and return policy?\u003c\/summary\u003e\n  \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, 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\n\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. 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\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723966386491,"sku":"23KY097","price":39.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23KY0971_797dbe16-15d8-420f-aab4-982f405a841d.jpg?v=1763038628","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-repair-kit-fits-yamaha-f50a-4-stroke-50hp-replaces-6bg-w0078-01","provider":"SeaSierra","version":"1.0","type":"link"}