Shop by Brand Yamaha OutboardGasket/Gasket Kit Back Lower Unit Gasket Kit 66T-W0001-20 Viewer:784 OEM No.: 66T-W0001-20 For YAMAHA outboard 40 HP You May Also Be Interested In Gasket, Upper Casing 6G5-45113-A0-00/6G5-45113-A1-00 Gasket, Float Chamber 66M-14384-00-00 Coil Ignition 6F6-85530-01-00 Crankshaft 6G5-11411-00-00/6G5-11411-01-00