Description
Engine heat is the silent killer of performance and reliability—especially under sustained racing conditions or aggressive driving. The Boyesen WPK-45AM water pump cover and impeller assembly solves this by increasing coolant flow across all RPM ranges, keeping your engine at a stable operating temperature and protecting critical components from thermal stress. This magnesium investment-cast upgrade is a straightforward bolt-on solution that extends engine life while maintaining the thermal stability your build demands.
- Magnesium investment-cast construction
- Patented nautilus impeller design
- High-flow hydrodynamic geometry
- Increased coolant flow all RPMs
- Reduced engine operating temperature
- Bolt-on installation
- MPN: WPK-45AM
- Improves thermal consistency
- Extended engine longevity









