{"product_id":"water-pump-impeller-fits-yamaha-8-20-hp-2-4-stroke-outboards-replaces-63v-44352-01-00","title":"Water Pump Impeller – Fits Yamaha 8–20 HP 2 \u0026 4 Stroke Outboards (Replaces 63V-44352-01-00)","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\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis is a direct replacement \u003cstrong\u003eWater Pump Impeller – Fits Yamaha 8–20 HP 2 \u0026amp; 4 Stroke Outboards (Replaces 63V-44352-01-00)\u003c\/strong\u003e. It is designed for select Yamaha 2-Stroke 9.9–15 HP models (1996–2001) and Yamaha 4-Stroke 8–20 HP models, including T8, T9.9, F9.9, F15, and F20 (1998–2021). Its durable, 6-blade design ensures reliable cooling performance.\u003c\/p\u003e\n\u003cp\u003eThis part provides a direct interchange for Yamaha OEM part 63V-44352-01-00 (superseding 63V-44352-00-00) and aftermarket numbers including Sierra 18-3040, Mallory 9-45607, and GLM Marine 89619.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMethod: Direct Replacement\u003c\/li\u003e\n\u003cli\u003eMaterial: High-strength Rubber\/Neoprene\u003c\/li\u003e\n\u003cli\u003eBlades: 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\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        \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\u003e63V-44352-01-00\u003c\/td\u003e\n        \u003ctd\u003eCurrent OEM part\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e63V-44352-00-00\u003c\/td\u003e\n        \u003ctd\u003eSuperseded by 63V-44352-01-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3040\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMallory\u003c\/td\u003e\n        \u003ctd\u003e9-45607\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM Marine\u003c\/td\u003e\n        \u003ctd\u003e89619\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSEI Marine\u003c\/td\u003e\n        \u003ctd\u003e96-499-03E\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eRed Rhino\u003c\/td\u003e\n        \u003ctd\u003eYA-107\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCEF\u003c\/td\u003e\n        \u003ctd\u003e500363\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\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 engine's model, horsepower, and year range to ensure correct fitment. This impeller fits both 2-stroke and 4-stroke applications as 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\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1996–2001\u003c\/td\u003e\n        \u003ctd\u003e63V-44352-01-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 63V-44352-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1996–1998\u003c\/td\u003e\n        \u003ctd\u003e63V-44352-01-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 63V-44352-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eT8\u003c\/td\u003e\n        \u003ctd\u003e8\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2002–2009\u003c\/td\u003e\n        \u003ctd\u003e63V-44352-01-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 63V-44352-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eT9.9\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2005–2021\u003c\/td\u003e\n        \u003ctd\u003e63V-44352-01-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 63V-44352-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF9.9\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2005\u003c\/td\u003e\n        \u003ctd\u003e63V-44352-01-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 63V-44352-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF15\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1998–2021\u003c\/td\u003e\n        \u003ctd\u003e63V-44352-01-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 63V-44352-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF20\u003c\/td\u003e\n        \u003ctd\u003e20\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2006–2021\u003c\/td\u003e\n        \u003ctd\u003e63V-44352-01-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 63V-44352-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater Pump Impeller\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect Replacement\u003c\/dd\u003e\n  \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eRubber\/Neoprene\u003c\/dd\u003e\n  \u003cdt\u003eHeight\u003c\/dt\u003e\n\u003cdd\u003e14.22 mm (0.56 in)\u003c\/dd\u003e\n  \u003cdt\u003eOverall Diameter\u003c\/dt\u003e\n\u003cdd\u003e52.83 mm (2.08 in)\u003c\/dd\u003e\n  \u003cdt\u003eShaft Diameter\u003c\/dt\u003e\n\u003cdd\u003e13 mm (0.51 in)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e14 g (0.49 oz)\u003c\/dd\u003e\n  \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Water Pump Impeller (63V-44352-01-00)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and spark plug wires for safety.\u003c\/li\u003e\n  \u003cli\u003ePlace the outboard in neutral and remove the lower unit (gearcase) bolts.\u003c\/li\u003e\n  \u003cli\u003eCarefully lower and remove the gearcase, disconnecting the shift shaft if necessary.\u003c\/li\u003e\n  \u003cli\u003eLocate the water pump housing on top of the gearcase and remove its bolts.\u003c\/li\u003e\n  \u003cli\u003eSlide the housing up to expose the old impeller. Note the direction of the old blades.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller, key, and any gaskets from the driveshaft.\u003c\/li\u003e\n  \u003cli\u003eLightly grease the new impeller and install it onto the driveshaft, ensuring the blades are oriented correctly (typically clockwise).\u003c\/li\u003e\n  \u003cli\u003eReinstall the water pump housing, gaskets, and faceplate.\u003c\/li\u003e\n  \u003cli\u003eReattach the lower unit to the engine, aligning the driveshaft, water tube, and shift shaft.\u003c\/li\u003e\n  \u003cli\u003eOnce reassembled, test the engine in water to confirm proper water flow from the tell-tale outlet.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know this impeller fits my specific Yamaha outboard?\u003c\/summary\u003e\n  \u003cp\u003eThe best way to confirm fitment is to check your engine's model and serial number against the compatibility table provided. This impeller fits a wide range of Yamaha 2-stroke (9.9-15 HP) and 4-stroke (8-20 HP) models. Always verify your OEM part number (63V-44352-01-00 or 63V-44352-00-00) if possible.\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 signs include a weak or non-existent water stream from the \"tell-tale\" outlet, engine overheating alarms, and in severe cases, steam from the exhaust. Reduced cooling efficiency is the primary indicator.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should I replace my impeller?\u003c\/summary\u003e\n  \u003cp\u003eFor preventative maintenance, it is recommended to replace the impeller every 1-2 years or every 100-200 hours of use, whichever comes first. Usage in saltwater or sandy\/murky water may require more frequent changes.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs any special grease required for installation?\u003c\/summary\u003e\n  \u003cp\u003eYes, applying a thin layer of marine-grade grease or a soap-and-water solution to the inside of the pump housing and the impeller blades can ease installation and provide a good initial seal. Do not use petroleum-based grease, as it can damage the rubber.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I reuse the old water pump housing and gaskets?\u003c\/summary\u003e\n  \u003cp\u003eIt is highly recommended to inspect the water pump housing, wear plate, and gaskets for scoring, warping, or corrosion. For a complete and reliable repair, consider using a full water pump repair kit that includes these components, especially if they show signs of wear.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the main difference between this impeller and the OEM version?\u003c\/summary\u003e\n  \u003cp\u003eThis aftermarket impeller is engineered to meet or exceed OEM specifications for fit, material, and performance. The primary difference is the price point. It offers a cost-effective solution without compromising on the quality and durability required for reliable engine cooling.\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\u003c\/section\u003e\n\n\u003csection\u003e\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\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003eManufacturer-Direct Value — 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":50718272782651,"sku":"VX-V7UR-AGC7","price":11.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/VX-V7UR-AGC7.png?v=1762958789","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-fits-yamaha-8-20-hp-2-4-stroke-outboards-replaces-63v-44352-01-00","provider":"SeaSierra","version":"1.0","type":"link"}