Mercruiser Stern Drive Carburetor Mounting Gasket | Sierra 18-0354 Holley 2 barrel carburetor base mounting gasket fits Mercruiser Ford 302 CID marine engines. Fits Mercruiser 888 Ford 302 cu. in. marine engines from 1971-1977 Replaces Mercury 27-60715 Replaces Mallory 9-61006