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 - Valve Seat 61X-14613-A0 / 61X-14613-A1 Gasket - Cylinder Head 6R7-11181-A1 Battery CB16CL-B / CB16CLB / YT16CLS Throttle Cable 415-044-400 / 05-140-11