Gasket seals between exhaust manifold & cylinder head on OMC 4 cylinder 3.0L marine engines. Exhaust Manifold To Head Gasket | BRP 3853256 Exhaust manifold to head gasket For OMC GM 3.0L 4 cylinder HO engines from 1991 thru 1993 and standard GM 3.0L 4 cylinder engines 1994 thru current production Replaces 914518 Original OMC