Boyesen Impeller Pump - Yamaha Yz 250 Wpi-32A

Designed to increase water flow and reduce hydraulic friction for a cooler, more constant temperatureLess horsepower loss during the late stages of a raceExtend engine lifeImpellers are designed to...

Designed to increase water flow and reduce hydraulic friction for a cooler, more constant temperatureLess horsepower loss during the late stages of a raceExtend engine lifeImpellers are designed to...

Designed to increase water flow and reduce hydraulic friction for a cooler, more constant temperatureLess horsepower loss during the late stages of a raceExtend engine lifeImpellers are designed to...

Look like a professional with the Factory Ignition CoverSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the highest grade...

Increased coolant flow at all rpm rangesPatented Nautilus-style impeller for hydrodynamic efficiency Yamaha -- YZ 125 -- (2009, 2014, 2005, 2008, 2016, 2012, 2019, 2020, 2023, 2021, 2022, 2015, 2013,...