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 Gasket - Upper Casing 6K8-45113-00 Top End Gasket Kit 6K8-W0001-TG Forward Gear Set 43-828072A2 / 43-878087A2 Cylinder sleeve 496-44403-00