BOYESEN SuperCooler - Water Pump Cover + Impeller (WPK-38DM)
Replace the original cover with this Boyesen SuperCooler magnesium kit to optimize coolant circulation on your dirt bike. Designed as a high-flow hydraulic assembly, this cover and its impeller improve fluid passage around the pump, contributing to more consistent engine temperature management during long off-road sessions.
- Kit contents: pump cover, gasket, impeller, screw kit.
- Material: magnesium housing — lightweight and durable structure.
- Usage: intended for dirt bikes and compatible with the relevant pump covers.
This kit is aimed at riders looking to enhance the cooling circuit without altering the engine architecture. Installation is a direct replacement of the original cover; the gasket and necessary screws are included for a clean fit. It does not modify the electronics or mapping, as it directly affects the hydraulic flow of the pump.
Common compatibilities: YAMAHA YZ 450 F (2026), WR 450 F (2026), YZ 450 FX (2024). Check your cover reference before ordering. Manufacturer reference: WPK-38DM.
