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Upgrade the cooling performance of your Yamaha YZ250F or WR250F with the Boyesen WPK-37B Supercooler Water Pump Cover and Impeller Kit.
Built with an investment-cast aluminum cover and a patented nautilus-style impeller, this premium water pump kit improves coolant flow at all RPM ranges, ensuring your engine runs cooler and maintains a stable temperature.
The Boyesen Supercooler Kit is designed for durability and efficiency, extending your engine’s life while providing a sleek black powder-coated finish that resists wear and tear.
It's the ultimate solution for off-road riders looking to enhance engine reliability and performance.
Item Specifics:
- Product Name: Cover and Impeller Kit
- Type: Water Pump
- Model: Supercooler
- Color/Finish: Powder-Coated / Black
- Material: Aluminum
- Units: Kit
- Riding Style: Off-Road
- Weight: 0.37 lbs
- Dimensions:
- Height: 2.55 inches
- Length: 5.7 inches
- Width: 4.64 inches
 
Features:
- High-flow, hydrodynamic design for increased coolant flow at all RPMs.
- Investment-cast aluminum for superior strength and durability.
- Engine runs cooler and maintains a stable temperature under all conditions.
- Patented nautilus-style impeller for maximum hydrodynamic efficiency.
- Magnesium powder-coated finish resists wear, scratches, and corrosion.
- Helps extend engine life and improve overall performance.
Fitment Table:
| Year | Make | Model | 
|---|---|---|
| 2001 | Yamaha | YZ 250 F | 
| 2002 | Yamaha | YZ 250 F | 
| 2003 | Yamaha | YZ 250 F | 
| 2004 | Yamaha | YZ 250 F | 
| 2005 | Yamaha | YZ 250 F | 
| 2006 | Yamaha | YZ 250 F | 
| 2007 | Yamaha | YZ 250 F | 
| 2008 | Yamaha | YZ 250 F | 
| 2009 | Yamaha | YZ 250 F | 
| 2010 | Yamaha | YZ 250 F | 
| 2011 | Yamaha | YZ 250 F | 
| 2012 | Yamaha | YZ 250 F | 
| 2013 | Yamaha | YZ 250 F | 
| 2001 | Yamaha | WR 250 F | 
| 2002 | Yamaha | WR 250 F | 
| 2003 | Yamaha | WR 250 F | 
| 2004 | Yamaha | WR 250 F | 
| 2005 | Yamaha | WR 250 F | 
| 2006 | Yamaha | WR 250 F | 
| 2007 | Yamaha | WR 250 F | 
| 2008 | Yamaha | WR 250 F | 
| 2009 | Yamaha | WR 250 F | 
| 2010 | Yamaha | WR 250 F | 
| 2011 | Yamaha | WR 250 F | 
| 2012 | Yamaha | WR 250 F | 
| 2013 | Yamaha | WR 250 F | 
Enhance your Yamaha YZ250F or WR250F with the Boyesen WPK-37B Supercooler Water Pump Kit. Designed for riders who demand better performance and engine reliability, this kit is a must-have upgrade. Order today to keep your engine cooler and running stronger!
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