Upgrade the cooling system on select Husqvarna and KTM motorcycles with the Boyesen WPK-45AB Water Pump Cover and Impeller Kit. This black kit combines a durable two-piece cast aluminum cover with Boyesen’s patented Nautilus-style impeller to help improve coolant circulation and hydrodynamic efficiency throughout the engine’s operating range. The design supports consistent cooling performance during demanding riding conditions.
The Boyesen WPK-45AB also provides convenient oil filter access, allowing easier filter changes without unnecessary removal of surrounding components. Its application-specific construction is designed for a secure fit on compatible 450 and 501 models, making it a practical replacement or performance-focused upgrade for maintenance, trail riding, motocross, and off-road use.
Fitment: Fits 2017 Husqvarna FX 450; 2016–2017 Husqvarna FC 450; 2017 Husqvarna FE 450; 2017 Husqvarna FE 501; 2017 KTM 500 EXC-F; 2016–2017 KTM 450 SX-F; and 2016–2017 KTM 450 XC-F. Verify the motorcycle model and year before installation to ensure compatibility. Manufacturer part number: WPK-45AB. Vendor part number: 59-8625AB.
Features:
- 2-piece cast aluminum construction for durability and reliable service
- Oil filter access for hassle-free filter changes
- Increased coolant flow across a broad range of engine speeds
- Patented Nautilus-style impeller for improved hydrodynamic efficiency
- Black finish with application-specific fitment for select Husqvarna and KTM motorcycles
Fitment:
2016 Husqvarna FC 450
2016 KTM 450 SX-F
2016 KTM 450 XC-F
2017 Husqvarna FC 450
2017 Husqvarna FE 450
2017 Husqvarna FE 501
2017 Husqvarna FS450
2017 Husqvarna FX 450
2017 KTM 450 SX-F
2017 KTM 450 XC-F
2017 KTM 500 EXC-F
2018 Husqvarna FC 450
2018 Husqvarna FE 450
2018 Husqvarna FE 501
2018 Husqvarna FS450
2018 Husqvarna FX 450
2018 KTM 450 SX-F
2018 KTM 450 XC-F
2018 KTM 500 EXC-F
2019 Husqvarna FC 450
2019 Husqvarna FE 450
2019 Husqvarna FE 501
2019 Husqvarna FS450
2019 Husqvarna FX 450
2019 KTM 450 SX-F
2019 KTM 450 XC-F
2019 KTM 500 EXC-F
2020 Husqvarna FC 450
2020 Husqvarna FE 450
2020 Husqvarna FE 501
2020 Husqvarna FE 501S
2020 Husqvarna FS450
2020 Husqvarna FX 450
2020 KTM 450 SX-F
2020 KTM 450 XC-F
2020 KTM 500 EXC-F
2020 KTM 500 XCF-W
2021 Gas-Gas EX 450F
2021 Gas-Gas MC 450F
2021 Husqvarna FC 450
2021 Husqvarna FE 450
2021 Husqvarna FE 501
2021 Husqvarna FE 501S
2021 Husqvarna FS450
2021 Husqvarna FX 450
2021 KTM 450 SMR 4-Stroke
2021 KTM 450 SX-F
2021 KTM 450 XC-F
2021 KTM 500 EXC-F
2021 KTM 500 XCF-W
2022 Gas-Gas EX 450F
2022 Gas-Gas MC 450F
2022 Husqvarna FC 450
2022 Husqvarna FE 450
2022 Husqvarna FE 501
2022 Husqvarna FE 501S
2022 Husqvarna FS450
2022 Husqvarna FX 450
2022 KTM 450 SX-F
2022 KTM 450 XC-F
2022 KTM 500 EXC-F
2022 KTM 500 XCF-W
2023 Gas-Gas EX 450F
2023 Gas-Gas MC 450F
2023 Husqvarna FC 450
2023 Husqvarna FE 450
2023 Husqvarna FE 501S
2023 Husqvarna FS450
2023 Husqvarna FX 450
2023 KTM 450 SX-F
2023 KTM 450 XC-F
2023 KTM 450 XCF-W
2023 KTM 500 EXC-F
2023 KTM 500 XCF-W
2024 Gas-Gas EX 450F
2024 Gas-Gas MC 450F
2024 Husqvarna FC 450
2024 Husqvarna FE 450
2024 Husqvarna FS450
2024 Husqvarna FX 450
2024 KTM 450 SX-F
2024 KTM 450 XC-F
2024 KTM 500 EXC-F
2024 KTM 500 XCF-W
2025 Gas-Gas MC 450F
2025 Husqvarna FC 450
2025 Husqvarna FX 450
2025 KTM 450 SX-F
2025 KTM 450 XC-F