The BOYESEN WPK-38CL Blue Water Pump Cover & Impeller Kit is designed for select Yamaha motorcycles. Its two-piece cast aluminum construction provides a durable replacement water pump cover and impeller assembly, while the oil filter access supports hassle-free filter changes.
The patented Nautilus-style impeller is designed for hydrodynamic efficiency and increased coolant flow across all RPM ranges. This kit fits the 2014–2018 Yamaha YZ450F, 2016–2018 Yamaha YZ450FX, and 2016–2017 Yamaha WR450F, as specified by the manufacturer.
Manufacturer part number: WPK-38CL. Vendor part number: 59-8630L.
Features:
- Construction: Two-piece cast aluminum construction.
- Oil Filter Access: Provides access for hassle-free oil filter changes.
- Coolant Flow: Designed to increase coolant flow at all RPM ranges.
- Impeller Design: Patented Nautilus-style impeller for hydrodynamic efficiency.
- Fitment: Fits 2016–2018 Yamaha YZ450FX, 2014–2018 Yamaha YZ450F, and 2016–2017 Yamaha WR450F.
Fitment:
2014 Yamaha YZ450F
2015 Yamaha YZ450F
2016 Yamaha WR450F
2016 Yamaha YZ450F
2016 Yamaha YZ450FX
2017 Yamaha WR450F
2017 Yamaha YZ450F
2017 Yamaha YZ450FX
2018 Yamaha WR450F
2018 Yamaha YZ450F
2018 Yamaha YZ450FX
2019 Yamaha WR450F
2019 Yamaha YZ450F
2019 Yamaha YZ450FX
2020 Yamaha WR450F
2020 Yamaha YZ450F
2020 Yamaha YZ450FX
2021 Yamaha WR450F
2021 Yamaha YZ450F
2021 Yamaha YZ450FX
2022 Yamaha WR450F
2022 Yamaha YZ450F
2022 Yamaha YZ450FX
2023 Yamaha WR450F
2023 Yamaha YZ450FX