OMC Manifold End Plate Gasket | Barr OMC47-311130End gasket for OMC 225 HP & 245 HP marine engines with log style exhaust manifolds. Barr OMC end plate gasket For OMC 225 HP and 245 HP marine engines with log style exhaust manifolds from 1968-1972 Not for use between elbow and manifold - use P/N 311131 Replaces OMC 311130