Shop by Brand Yamaha OutboardGasket/Gasket Kit Back Gasket 66T-14959-00 Viewer:859 OEM No.: 66T-14959-00 For YAMAHA outboard 40 HP You May Also Be Interested In Gasket 6E5-14198-A2-00 Gasket, Upper Casing 676-45113-00 Shim 663-45577-01-30 Impeller 47-803631T/803631T