2003-2015 for Yamaha WR 450 F BOYESEN Impeller/Waterpump Cover Magnesium WPK-38M Wide entry aperture for convenience

Wide entry aperture for convenience with a hook-and-loop upper closure with TPU flap to allow a wide range of calf fitment adjustment and support

This kit can save hundreds of dollars in engine repairs

Active View™ Technology - Automatically Change Beam Patterns Based On Vehicle Speed

Wider than other trail riding and racing tires

Show Quality Chrome

2003-2015 for Yamaha WR 450 F BOYESEN Impeller/Waterpump Cover Magnesium WPK-38M Wide entry aperture for convenienceManufacturer: Boyesen MPN: WPK 38M Title: Supercooler Kit Size: Option: Color: Magnesium Cast aluminum construction. Increased coolant flow in all RPM ranges. Patented nautilus style impeller for hydrodynamic efficiency.