Boyesen Supercooler Water Pump Kit (Black) WPK-38DB - Yamaha YZ450F / YZ450FX / WR450F 2023-2026

Product Description

Keep your engine temperatures under control with the Boyesen Supercooler Water Pump Kit. Designed for hard-riding motocross and off-road racers, this investment-cast aluminum water pump cover and impeller combo is specifically engineered to enhance the performance of your dirt bike's cooling system.

The high-flow, hydrodynamic design has been thoroughly tested to flow significantly more coolant than standard setups. By utilizing a nautilus-style impeller, this kit increases coolant flow across all RPM ranges, allowing your engine to run cooler at a more constant temperature. This improved hydrodynamic efficiency not only prevents overheating during grueling motos but also ultimately extends engine life.

Top Features: Boyesen Supercooler

• Includes a precision investment-cast aluminum water pump cover and matching impeller.
• High-flow nautilus-style impeller maximizes hydrodynamic efficiency to flow more coolant.
• Reduces engine temperatures across all RPM ranges for consistent power delivery.
• Durable black powder-coated finish protects against wear and debris.
• Proudly made in the USA.

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

Fitment List

Frequently Asked Questions

Q: Does this kit include both the cover and the impeller?
A: Yes, the Boyesen Supercooler kit includes both the investment-cast aluminum water pump cover and the nautilus-style impeller.

Q: Will this help my bike if it boils over on slow trails?
A: Yes, the hydrodynamic design increases coolant flow at all RPM ranges, which significantly helps reduce running temperatures and prevent boil-overs during slow, technical riding.

Expert Pro-Tip: When installing your new water pump kit, take the opportunity to completely flush your cooling system and refill it with fresh, high-quality motorcycle coolant. Make sure to bleed the cooling system thoroughly according to your service manual to remove any trapped air pockets before riding.

Recommended Pairings:

• Yamaha YZ450F Performance Parts & Upgrades
• Yamaha 4-Stroke Performance Parts & Accessories
• Premium Motorcycle Chemicals & Coolant

About Moto-House MX

At 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 machines. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

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