Products PWC- YamahaGasket / O-Ring / Shim Back Gasket - Upper Casing 6K8-45113-00 Item number: 6K8-45113-00 Fit on models: 1989 Yamaha WR500F CRANKSHAFT - PISTON You May Also Be Interested In Gasket - Exhaust Pipe 66V-14613-00 Gasket - Exhaust Pipe 66E-14623-00 Piston Kit 09-650-01 Throttle Cable 512-059-973 / 05-138-43