The Athena P400485600213 Top End Gasket Kit is designed to provide reliable sealing performance during top-end engine service on select Yamaha 450 models. This kit is supplied without a valve cover gasket and is intended for applications where the existing valve cover gasket is serviceable or a separate replacement is being used. Athena manufactures its gaskets in state-of-the-art, computer-controlled facilities using carefully selected materials for consistent quality and dependable fitment.
Built to meet or exceed OEM specifications, this top-end gasket kit helps restore proper sealing between engine components and supports reliable performance after rebuild or maintenance work. Athena is an established gasket manufacturer and supplies original-equipment gaskets to a significant number of European manufacturers. Verify the application and gasket requirements before installation, and follow the motorcycle manufacturer’s service procedures for torque specifications, tightening sequence, surface preparation, and replacement of related fasteners or seals.
The Athena manufacturer and vendor part number is P400485600213. This kit fits the 2020 Yamaha YZ450F; 2021 Yamaha YZ450F, YZ450FX, and WR450F; 2022 Yamaha YZ450F, YZ450FX, and WR450F; and 2023 Yamaha YZ450FX and WR450F. It is a direct-fit service component for the listed Yamaha applications, subject to model-year configuration and engine compatibility.
Features:
- Quality Manufacturing: Produced in state-of-the-art, computer-controlled facilities for consistent gasket construction.
- Premium Materials: Gaskets are made from high-quality materials selected for dependable sealing performance.
- OEM-Level Standards: Athena gasket sets meet or exceed applicable OEM specifications.
- Application: Top-end gasket kit supplied without a valve cover gasket.
- Fitment: Fits 2020 Yamaha YZ450F; 2021 Yamaha YZ450F, YZ450FX, and WR450F; 2022 Yamaha YZ450F, YZ450FX, and WR450F; and 2023 Yamaha YZ450FX and WR450F.
- Part Number: Athena manufacturer and vendor part number P400485600213.
Fitment:
2020 Yamaha YZ450F
2021 Yamaha WR450F
2021 Yamaha YZ450F
2021 Yamaha YZ450FX
2022 Yamaha WR450F
2022 Yamaha YZ450F
2022 Yamaha YZ450FX
2023 Yamaha WR450F
2023 Yamaha YZ450FX