Shop by Brand Mercury OutboardGasket/Gasket Kit Back Gasket Kit 27-78028A78 Viewer:103 OEM No.: 27-78028A78 For Mercury outboard 35, 40 HP You May Also Be Interested In Power Head Gasket Set 27-803663A01/803663A01 Gasket 27-161582/161582 Piston Ring 386280/0386280 0.030 Propeller 175190/0175190