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 - Muffler Damper 66E-14749-00 Gasket - Muffler Damper 6K8-14739-00 Piston 13001-3731 Wear Plate 32435