Products PWC- Yamaha500 CC 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 Connecting Rod Kit 296-01000-501 / 010-501 Screw, Pan Head 98580-05016 Piston Kit 09-781-03 Ignition Coil 62L-85570-00