Vertex Water Pump Rebuild Kit 821904 — Honda TRX450R / TRX450ER 2006-2014

Vertex Water Pump Rebuild Kit 821904 — Honda TRX450R / TRX450ER 2006-2014

Product Description

Keep your high-performance sport quad operating at its ideal thermal baseline with the premium Vertex Water Pump Rebuild Kit 821904. 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.

Every 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.

Top Features: Vertex Water Pump Rebuild Kit

• All-In-One Assembly Pack: Contains every required gasket, specialized O-ring, precision bearing, mechanical face seal, shaft snap ring, and copper drain washer for a total rebuild.
• High-Durability Mechanical Seals: Engineered to withstand harsh engine coolant chemical additives and extreme cooling pressures without dripping.
• Precision OEM Tolerances: Drop-in component dimensions match factory specs flawlessly, ensuring a straightforward installation process and a reliable seal interface.
• Crankcase Contamination Defense: Prevents engine coolant from cutting past worn seals and mixing into your transmission or engine oil reservoirs.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
2006-2009, 2012-2014	Honda	TRX450ER Electric Start
2006-2009	Honda	TRX450R

Frequently Asked Questions

Q: What are the main signs that indicate my Honda TRX450R water pump is failing?
A: 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.

Q: Does this water pump rebuild kit include a replacement impeller or shaft?
A: 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.

Q: Why should I always change out the copper wash gaskets during a water pump service?
A: 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.

Expert Pro-Tip: 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.

Recommended Pairings:
o Honda TRX450R Performance Parts & Upgrades
o Premium Motorcycle Chemicals & Engine Fluids
o MX & Off-Road Maintenance Tools

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