{"product_id":"water-pump-impeller-key-fits-yamaha-425hp-450hp-replaces-6gr-44352-00-6aw-44336-00-0","title":"Water Pump Impeller \u0026 Key – Fits Yamaha 425HP 450HP (Replaces 6GR-44352-00, 6AW-44336-00-0)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\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  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\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\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller \u0026amp; Key\u003c\/strong\u003e is designed for \u003cstrong\u003eYamaha 425HP and 450HP outboard motors\u003c\/strong\u003e. Engineered as a direct-fit aftermarket replacement, this impeller ensures reliable water circulation to keep your high-performance XF series engine running cool under demanding conditions.\u003c\/p\u003e\n\n\u003cp\u003eThis component directly replaces Yamaha OEM part numbers 6GR-44352-00-00 and 6GR-44352-00, offering full interchange compatibility for your service needs.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eComplete kit includes impeller and drive key for immediate installation\u003c\/li\u003e\n  \u003cli\u003eDesigned for high-output Yamaha XF 425 HP and XF 450 HP engines\u003c\/li\u003e\n  \u003cli\u003ePrecision-molded rubber construction for consistent water flow and durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\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\u003e6GR-44352-00-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6GR-44352-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6AW-44336-00-0\u003c\/td\u003e\n        \u003ctd\u003eRelated key\/pin reference\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\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\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\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\u003eXF\u003c\/td\u003e\n        \u003ctd\u003e425\u003c\/td\u003e\n        \u003ctd\u003e6GR-44352-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eXF\u003c\/td\u003e\n        \u003ctd\u003e450\u003c\/td\u003e\n        \u003ctd\u003e6GR-44352-00-00\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\n\u003cdl\u003e\n  \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n  \u003cdd\u003e6GR-44352\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eOutboard water pump impeller replacement\u003c\/dd\u003e\n  \u003cdt\u003eCompatible Engines\u003c\/dt\u003e\n  \u003cdd\u003eYamaha XF 425 HP, Yamaha XF 450 HP\u003c\/dd\u003e\n  \u003cdt\u003eKit Contents\u003c\/dt\u003e\n  \u003cdd\u003eImpeller with drive key\/pin\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eOutboard rubber impeller with key\/pin\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and ensure the engine is off and cool before beginning work.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit according to your engine's service manual.\u003c\/li\u003e\n  \u003cli\u003eAccess the water pump housing and remove the cover plate.\u003c\/li\u003e\n  \u003cli\u003eExtract the old impeller, noting the orientation of the blades.\u003c\/li\u003e\n  \u003cli\u003eInspect the pump housing and plate for scoring, corrosion, or debris; clean or replace as needed.\u003c\/li\u003e\n  \u003cli\u003eLubricate the new impeller with glycerin or soapy water—never petroleum-based lubricants.\u003c\/li\u003e\n  \u003cli\u003eInsert the drive key into the driveshaft slot.\u003c\/li\u003e\n  \u003cli\u003eInstall the new impeller onto the driveshaft, rotating blades in the correct direction.\u003c\/li\u003e\n  \u003cli\u003eReassemble the pump housing, ensuring all O-rings and gaskets are properly seated.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit, torque all fasteners to specification, and reconnect the battery.\u003c\/li\u003e\n  \u003cli\u003eRun a water test to confirm proper cooling system operation and check for leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know when to replace my impeller?\u003c\/summary\u003e\n  \u003cp\u003eReplace your impeller annually or every 200–300 operating hours, whichever comes first. Signs of failure include engine overheating, weak water stream from the tell-tale, or visible cracking and missing blades during inspection.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eWill this impeller fit both the 425 HP and 450 HP models?\u003c\/summary\u003e\n  \u003cp\u003eYes, this impeller is designed to fit both Yamaha XF 425 HP and XF 450 HP outboard engines using OEM part number 6GR-44352-00-00.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need to replace the drive key every time I change the impeller?\u003c\/summary\u003e\n  \u003cp\u003eIt is highly recommended. The drive key can wear or deform over time, and replacing it ensures reliable torque transfer and prevents slippage that could damage the new impeller.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eWhat type of lubricant should I use during installation?\u003c\/summary\u003e\n  \u003cp\u003eUse only glycerin, dishwashing liquid, or a water-based lubricant. Never use petroleum-based products, as they can swell and degrade the rubber impeller material.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eCan I install this myself, or do I need a professional?\u003c\/summary\u003e\n  \u003cp\u003eIf you have mechanical experience and the proper tools, installation is straightforward following your engine's service manual. For those unfamiliar with lower unit service, professional installation is recommended to ensure correct assembly and torque specifications.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eWhat causes impeller failure?\u003c\/summary\u003e\n  \u003cp\u003eCommon causes include running the engine dry, debris in the cooling system, prolonged idle time causing blade set, chemical degradation, and normal wear from continuous flexing during operation.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eVerify images\/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","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":51025914757435,"sku":"25IY048K","price":26.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/s-l1600_92ba866b-a23e-4af5-913f-9e99b1249391.jpg?v=1773149463","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-key-fits-yamaha-425hp-450hp-replaces-6gr-44352-00-6aw-44336-00-0","provider":"SeaSierra","version":"1.0","type":"link"}