BOYESEN Water Pump Impeller for YAMAHA WRF 250, YZF 250 and FANTIC XEF 250, XXF 250 2019-2026

BOYESEN offers this water pump repair kit for YAMAHA WRF 250, YZF 250 and FANTIC XEF 250, XXF 250 2019-2026. 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?

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-37C

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 YAM-91 · SAMCO YAM-92BLUE

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
FANTIC XEF 250 2024
FANTIC XEF 250 2023
FANTIC XEF 250 2022
FANTIC XXF 250 2024
FANTIC XXF 250 2023
FANTIC XXF 250 2022
YAMAHA WRF 250 2024
YAMAHA WRF 250 2023
YAMAHA WRF 250 2022
YAMAHA WRF 250 2021
YAMAHA WRF 250 2020
YAMAHA YZF 250 2026
YAMAHA YZF 250 2025
YAMAHA YZF 250 2024
YAMAHA YZF 250 2023
YAMAHA YZF 250 2022
YAMAHA YZF 250 2021
YAMAHA YZF 250 2020
YAMAHA YZF 250 2019