BOYESEN WATER PUMP COVER 98-04 YZ125, BOYESEN WPK31B Supercooler

Supercooler Water Pump Cover & Impeller Kit - Boyesen WPK-31B   Boyesen increases water flow so you get a cooler, more consistent temperature and less horsepower loss during the late stages of a race. Cooler running temperature prolongs engine life. Tough powder-coated finish. BLACK FINISH   Part No. 05-058.BK (oro2u.com)