Description
Engine temperature stability directly impacts performance and longevity—especially under sustained high-RPM operation. The BOYESEN WPK-37AB water pump cover and impeller assembly increases coolant flow across the entire RPM band, keeping combustion temperatures regulated and reducing thermal stress on critical engine components. The patented nautilus-style impeller design optimizes hydrodynamic efficiency, delivering superior cooling capacity compared to OEM units.
- Aluminum investment-cast construction
- Patented nautilus impeller design
- High-flow hydrodynamic engineering
- Increased coolant circulation all RPMs
- Improved thermal stability
- Extended engine lifespan
- Direct bolt-on installation
- MPN: WPK-37AB
- Black finish
- OEM-compatible fitment









