- New
BOYESEN Water Pump Impeller for KAWASAKI KX 450, KX 450 X, KXF 450 2024-2027
€110.90
Tax Included
The kit that rebuilds the water pump, the part that circulates coolant through the engine.
BOYESEN offers this water pump repair kit for KAWASAKI KX 450, KX 450 X, KXF 450 2024-2027. The water pump moves coolant between the engine and radiators. Its shaft turns constantly and its seals wear: coolant eventually leaks, often from the small weep hole under the pump.
Why rebuild the water pump?
The benefits:
- Stop a coolant leak.
- Prevent engine overheating.
- Much cheaper than a complete pump.
Why choose BOYESEN?
The Boyesen SuperCooler pump replaces the stock plastic impeller with a patented aluminium one, claimed by the brand to be 25 % more efficient.
When should you replace the water pump on your KAWASAKI KX 450?
Check the weep hole under the pump and the coolant level regularly. A pump bearing with play quickly wears new seals, so replace them together.
Specifications and fitting tips
- Increases water flow and reduces hydraulic friction for a cooler, more consistent temperature
- Reduces power loss in the final stages of a race
- Manufacturer part number: WPI-18
Cross-Mania tip: Drain the system before working on it, refill with fresh coolant and bleed the air.
Also needed with this part
- Coolant : LIQUI MOLY 1 L · TWIN AIR
- Radiator hoses : SAMCO KAW-94 · SAMCO KAW-93
Compatibility
Check the exact model and year of your bike in the list below before ordering.
Fits:
KAWASAKI KX 450 2026
KAWASAKI KX 450 2025
KAWASAKI KX 450 2024
KAWASAKI KX 450 X 2024
KAWASAKI KXF 450 2027
WPI-18
Specific References
Click on your bike to see all compatible parts.
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The kit that rebuilds the water pump, the part that circulates coolant through the engine.
BOYESEN Water Pump Impeller for KAWASAKI KX 450, KX 450 X, KXF 450 2024-2027
€110.90
Tax Included