{"product_id":"vertex-821904-water-pump-rebuild-kit-honda-trx450r-moto-house-mx","title":"Vertex Water Pump Rebuild Kit 821904 — Honda TRX450R \/ TRX450ER 2006-2014","description":"\u003ch1\u003e\u003cstrong\u003eVertex Water Pump Rebuild Kit 821904 — Honda TRX450R \/ TRX450ER 2006-2014\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eKeep your high-performance sport quad operating at its ideal thermal baseline with the premium \u003cstrong\u003eVertex Water Pump Rebuild Kit 821904\u003c\/strong\u003e. High-RPM track sessions, desert racing, and deep trail mud place tremendous stress on your machine's cooling components, degrading factory mechanical seals over time. This targeted overhaul package supplies an immediate, leak-free solution to refresh your internal fluid barriers, blocking loss of pressure and preventing engine oil contamination before it sidelines your weekend.\u003c\/p\u003e\n\u003cp\u003eEvery structural piece contained in this professional-grade kit is manufactured to meet or exceed strict OEM specifications for dimensional accuracy and component lifespan. Equipped with high-pressure mechanical seals, precision-ground bearings, application-specific gaskets, and durable rubber O-rings, this kit completely resolves weak sealing points inside the water pump housing. Overhauling the entire assembly at once delivers total peace of mind, protecting your race-bred four-stroke powerplant from catastrophic overheating failure.\u003c\/p\u003e\n\u003ch3\u003eTop Features: Vertex Water Pump Rebuild Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-In-One Assembly Pack:\u003c\/strong\u003e Contains every required gasket, specialized O-ring, precision bearing, mechanical face seal, shaft snap ring, and copper drain washer for a total rebuild.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Durability Mechanical Seals:\u003c\/strong\u003e Engineered to withstand harsh engine coolant chemical additives and extreme cooling pressures without dripping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision OEM Tolerances:\u003c\/strong\u003e Drop-in component dimensions match factory specs flawlessly, ensuring a straightforward installation process and a reliable seal interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankcase Contamination Defense:\u003c\/strong\u003e Prevents engine coolant from cutting past worn seals and mixing into your transmission or engine oil reservoirs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003ePlease review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eFitment List\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; margin-top: 15px; margin-bottom: 15px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eVehicle Brand\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eVehicle Model \u0026amp; Sub-Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2006-2009, 2012-2014\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eHonda\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eTRX450ER Electric Start\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2006-2009\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eHonda\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eTRX450R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the main signs that indicate my Honda TRX450R water pump is failing?\u003c\/strong\u003e\u003cbr\u003eA: Keep a close eye on the weep hole located underneath the water pump cover area. If you see persistent drips of engine coolant or engine oil coming out, it means your inner mechanical or oil seals have failed and need a quick rebuild before the fluids cross-contaminate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this water pump rebuild kit include a replacement impeller or shaft?\u003c\/strong\u003e\u003cbr\u003eA: No, this kit includes all the structural sealing elements, gaskets, bearings, and retention rings needed for an overhaul. Always inspect your factory impeller shaft closely for grooving where the old seal rode; if it's smooth, it's ready to use with this kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I always change out the copper wash gaskets during a water pump service?\u003c\/strong\u003e\u003cbr\u003eA: Copper washers are specialized crush gaskets. They are built to deform slightly when torqued down to establish a complete fluid barrier. Reusing an old copper washer means it cannot take a fresh sealing shape, often leading to annoying drops or weeping.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e When installing the new mechanical water pump seal into the right crankcase cover of your TRX450R, never press down on the inner carbon seal ring or spring assembly. Use a dedicated seal driver tool or a socket that matches the outer metal casing ring exactly. Applying force improperly will crack the delicate mechanical carbon face, destroying the seal before you even put the engine back together.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Pairings:\u003c\/strong\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/honda-trx450r-fourtrax-performance-motocross-sport-quads-atv-moto-house-mx\"\u003eHonda TRX450R Performance Parts \u0026amp; Upgrades\u003c\/a\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/premium-motorcycle-chemicals-brake-fluid-bike-wash-coolant-chain-lubes\"\u003ePremium Motorcycle Chemicals \u0026amp; Engine Fluids\u003c\/a\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/mx-off-road-motorcycle-tools\"\u003eMX \u0026amp; Off-Road Maintenance Tools\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eAt Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMoto-House MX – Choice of Champions\u003c\/strong\u003e – Clermont \/ Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Vertex","offers":[{"title":"Default Title","offer_id":45717190508627,"sku":"821904","price":59.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/5f87-5de7e94e9794b.jpg?v=1781837446","url":"https:\/\/motohousemx.com\/products\/vertex-821904-water-pump-rebuild-kit-honda-trx450r-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}