{"product_id":"water-pump-impeller-repair-kit-fits-yamaha-outboard-4-5-hp-replaces-68d-wg078-00-00-6e0-w0078-a2-00","title":"Water Pump Impeller Repair Kit – Fits Yamaha Outboard 4-5 HP (Replaces 68D-WG078-00-00, 6E0-W0078-A2-00)","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 complete \u003cstrong\u003eWater Pump Impeller Repair Kit – Fits Yamaha Outboard 4-5 HP\u003c\/strong\u003e provides everything needed for a full water pump service. It is designed for specific Yamaha 4-5 HP 2-Stroke (1984–2002) and F4 4-Stroke (1999–2008) outboards, as well as select Mariner 4-5 HP 2-Stroke models with serial numbers 6E0 and 6E3.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for Yamaha OEM part numbers 68D-WG078-00-00, 6E0-W0078-00, 6E0-W0078-A2-00, 6E0-W0078-A3-00, 6E0-W0078-A4-00, and 6E0-W0078-A5-00. It also interchanges with MARKGOO 68D-WG078-00-00.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Mounts within the lower unit's internal engine water pump assembly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Features a marine-grade metal alloy housing and a high-performance neoprene rubber impeller for corrosion resistance and longevity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Service:\u003c\/strong\u003e Includes a new housing, impeller, wear plates, gaskets, and hardware for a comprehensive overhaul.\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 suppliers.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\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\u003e68D-WG078-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6E0-W0078-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6E0-W0078-A2-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6E0-W0078-A3-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6E0-W0078-A4-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6E0-W0078-A5-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMARKGOO\u003c\/td\u003e\n        \u003ctd\u003e68D-WG078-00-00\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 applications, this kit covers specific 4 HP and 5 HP two-stroke models from 1984 to 2002 and F4 four-stroke models from 1999 to 2008.\u003c\/p\u003e\n\u003cp\u003eFor Mariner outboards, fitment is specific to 4 HP and 5 HP two-stroke models designated with serial numbers beginning in 6E0 or 6E3.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Models\"\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\u003e-\u003c\/td\u003e\n        \u003ctd\u003e4\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984–1999\u003c\/td\u003e\n        \u003ctd\u003e68D-WG078-00-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e-\u003c\/td\u003e\n        \u003ctd\u003e5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984–2002\u003c\/td\u003e\n        \u003ctd\u003e68D-WG078-00-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF4\u003c\/td\u003e\n        \u003ctd\u003e4\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1999–2001\u003c\/td\u003e\n        \u003ctd\u003e68D-WG078-00-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF4\u003c\/td\u003e\n        \u003ctd\u003e4\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2002–2008\u003c\/td\u003e\n        \u003ctd\u003e68D-WG078-00-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMariner\u003c\/td\u003e\n        \u003ctd\u003e4A(6E0)\u003c\/td\u003e\n        \u003ctd\u003e4\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e68D-WG078-00-00\u003c\/td\u003e\n        \u003ctd\u003eOnly with Serial Number 6E0\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMariner\u003c\/td\u003e\n        \u003ctd\u003e5C(6E3)\u003c\/td\u003e\n        \u003ctd\u003e5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e68D-WG078-00-00\u003c\/td\u003e\n        \u003ctd\u003eOnly with Serial Number 6E3\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMariner\u003c\/td\u003e\n        \u003ctd\u003e-\u003c\/td\u003e\n        \u003ctd\u003e4\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e68D-WG078-00-00\u003c\/td\u003e\n        \u003ctd\u003eModel 96325T with Serial Number 6E0\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMariner\u003c\/td\u003e\n        \u003ctd\u003e-\u003c\/td\u003e\n        \u003ctd\u003e5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e68D-WG078-00-00\u003c\/td\u003e\n        \u003ctd\u003eModel 96325M with Serial Number 6E3\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 with Housing\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eInternal\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade metal alloy\u003c\/dd\u003e\n  \u003cdt\u003ePackage Dimensions\u003c\/dt\u003e\n\u003cdd\u003e114 × 81 × 59 mm (4.49 × 3.19 × 2.32 inches)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e164 g (5.8 ounces)\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eInternal engine water pump assembly\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eHigh performance neoprene rubber\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 Water Pump Impeller (6E0-44352-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Water Pump Housing (68D-G4311-01-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Cartridge Insert (6E0-44322-02-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Outer Plate (6E0-44323-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Gasket, Water Pump (68D-G4315-A0-00)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Dowel Pin (93604-18080-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Water Damper Seal (67D-44366-00-00)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e4 x\u003c\/span\u003e Bolt (97095-06045-00)\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\u003eDrain the gearcase oil from the lower unit.\u003c\/li\u003e\n    \u003cli\u003eRemove the mounting bolts securing the lower unit (gearcase) to the engine's midsection and carefully lower it.\u003c\/li\u003e\n    \u003cli\u003eUnbolt and remove the old water pump housing to access the impeller and wear plates.\u003c\/li\u003e\n    \u003cli\u003eClean all mating surfaces thoroughly, removing any old gasket material or sealant.\u003c\/li\u003e\n    \u003cli\u003eInstall the new components from the kit in the reverse order of disassembly. Ensure the impeller vanes are oriented correctly (typically bent counter-clockwise).\u003c\/li\u003e\n    \u003cli\u003eApply a light marine-grade grease to the new gaskets and bolts.\u003c\/li\u003e\n    \u003cli\u003eRe-install the water pump housing, torquing bolts to manufacturer specifications.\u003c\/li\u003e\n    \u003cli\u003eRe-attach the lower unit, refill with fresh gear oil, and reconnect the battery.\u003c\/li\u003e\n    \u003cli\u003eStart the engine using a water source (flushing muffs) and verify a strong, steady stream of water 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 confirm this kit fits my engine?\u003c\/summary\u003e\n  \u003cp\u003eCheck your engine’s model, horsepower, and year against the compatibility table. For Mariner models, you must also verify your engine’s serial number matches the listed prefixes (6E0 or 6E3).\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 the engine overheating at idle or low speeds, a weak or non-existent water stream from the \"tell-tale\" outlet, or a brittle or cracked impeller found during inspection.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should the water pump kit be replaced?\u003c\/summary\u003e\n  \u003cp\u003eAs a preventative maintenance item, it is best practice to replace the water pump impeller and gaskets every 1-2 years or every 100-200 hours of operation, especially if used in saltwater.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhy buy a full kit instead of just the impeller?\u003c\/summary\u003e\n  \u003cp\u003eA full kit ensures all wear components are replaced simultaneously. The housing, wear plates, and seals degrade over time, and replacing only the impeller can lead to premature failure and inefficient cooling.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I install this kit myself?\u003c\/summary\u003e\n  \u003cp\u003eIf you have mechanical experience and the correct tools, this is a manageable DIY job. However, due to the importance of the cooling system, professional installation is recommended to ensure safety and performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow does an aftermarket part compare to OEM?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials, manufactured in an ISO 9002 facility, and batch-inspected for consistency and quality.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the shipping speed and cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, and expedited options will appear at checkout if available for your region.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n  \u003cp\u003eThis part is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, contact support with your order details. Returns are accepted within our standard window, provided the item is unused and in its 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 before purchase. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement component, not an OEM part.\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 rigorously tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — We offer free standard delivery to most regions, with typical transit times of 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 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":50723969171771,"sku":"XR17KY004","price":39.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/XR17KY004.png?v=1763038750","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-repair-kit-fits-yamaha-outboard-4-5-hp-replaces-68d-wg078-00-00-6e0-w0078-a2-00","provider":"SeaSierra","version":"1.0","type":"link"}