At DMG Motorsports, we present the Vertex Water Pump Rebuild Kit 821331 (680-1331) — a complete, race-proven solution for restoring your water pump to peak performance. Built by Vertex, a name trusted for decades of racing heritage and precision engineering, this kit takes the guesswork out of a full water pump rebuild by bundling every gasket, seal, bearing, and washer you need into one convenient package. Whether your ride is losing coolant, weeping at the water pump cover, or just due for preventative maintenance, this kit gets the job done right the first time. Fitting applications such as the KTM 450 SX-F (2007-2012) and 450 XC-F (2008-2009), it's engineered to meet or exceed OEM specifications so you can rebuild with confidence rather than replacing an entire pump assembly.

Unlike many bargain-bin kits, Vertex goes the extra mile by including the inner clutch cover gasket — a component frequently left out of competitor kits, forcing riders to source it separately. Everything arrives ready to install, precision-manufactured using quality materials that hold up to the heat, vibration, and pressure of high-performance off-road use. It's a smart, cost-effective way to extend the life of your machine's cooling system without paying dealer prices for a brand-new water pump.

Features:

• Complete kit includes every gasket, o-ring, mechanical seal, bearing, and seal needed to fully rebuild the water pump
• Inner clutch cover gasket included — a part often missing from other aftermarket kits
• Water pump cover gasket and all necessary washers included for a complete, leak-free rebuild
• Mechanical seal included, eliminating the need to source this critical component separately
• Constructed to meet or exceed OEM quality standards for reliable, long-lasting performance
• Fits KTM 450 SX-F (2007-2012) and 450 XC-F (2008-2009) models
• Backed by Vertex's reputation for precision-engineered gaskets and seals trusted by racers worldwide
• A cost-effective alternative to purchasing a full replacement water pump assembly

Fitment