Boyesen Supercooler Water Pump Cover & Impeller Kit - Magnesium Upgrade for 2004-2009 Honda CRF250X - Improves Engine Cooling for Off-Road & Motocross Racing

By increasing the coolant passage size, creating a high-flow impeller, and smoothing all interior surfaces to reduce friction, the Supercooler pumps out more coolant at a faster rate than your stock water pump. The Boyesen cover looks great but it keeps things simple too since it has the same footprint as your stock unit.

High efficiency water pump and cover for increased engine cooling

Investment cast from aluminum alloy for lightweight strength

Same footprint as stock parts for bolt-on installation without special gaskets or fitment

High-flow impeller moves more coolant than stock parts

Less cavitation on impeller means better efficiency and longer impeller shaft life