Description
Engine coolant flow directly impacts operating temperature stability and component longevity—inadequate cooling creates hot spots that accelerate wear on gaskets, seals, and bearings. The Boyesen WPK-45O water pump cover and impeller upgrade increases flow rates across the entire RPM band, allowing your engine to maintain a consistent thermal baseline under sustained load or high-ambient conditions. This investment-cast aluminum assembly pays dividends in reliability and consistent performance tuning.
- Aluminum investment-cast construction
- Patented nautilus impeller design
- Increased flow all RPM ranges
- Hydrodynamic efficiency optimized
- Reduces peak operating temperatures
- Extends engine component life
- High-flow water pump kit
- Bolt-on installation
- OEM part replacement
- MPN: WPK-45O
- Color: Orange anodized finish









