311376 OMC PLUG FREESE

The OMC 311376 is a water jacket freeze plug used in Johnson/Evinrude Cobra and Stringer inboard sterndrive engines. This is a critical cooling system component that seals the water jacket cavity in the engine block, preventing coolant leakage during normal operation and protecting against freeze damage in cold climates. The freeze plug is an original equipment manufacturer part made to OEM specifications. Replacement is recommended if corrosion is detected or if engine coolant shows signs of contamination from a failed seal.