311365 OMC GASKET PLATE TO CRANKCASE

OEM OMC 311365 is a plate to crankcase gasket that seals the mounting surface between engine base plates and the crankcase assembly. This critical seal prevents oil leakage and maintains pressure integrity in the lower end of Johnson Evinrude outboard powerheads. Used across multiple engine configurations and displacements. Part of routine powerhead rebuild kits. Replace if visible cracks, deterioration, or seepage appears at base mounting surfaces. Verify fitment against your specific model documentation.