Boyesen Supercooler Water Pump Kit Yamaha Yz250 99-22, Yz250X 16-22 Blue Socks Stainless steel springs to resist

Stainless steel springs to resist corrosion

WR 400F 99-00

When Rick Johnson wanted to do some riding

KTM 450 SX-F 2009-2010

If you need something that is not so vented

Boyesen Supercooler Water Pump Kit Yamaha Yz250 99-22, Yz250X 16-22 Blue Socks Stainless steel springs to resistThe Boyesen SuperCooler water pump kit is an aluminium investment cast water pump cover and impeller combo; specifically designed to enhance the performance of your engines cooling system. This high flow, hydrodynamic water pump kit has been tested and designed to flow more coolant. By increasing the flow, the engine will run cooler at a more constant temperature. Investment cast aluminium construction Increase coolant flow at all RPM ranges Patented