• Patented safeguard against overheating
• When overheating occurs, fail-safe automatically locks in the open position to permit maximum coolant flow
• Manufactured from high quality components to meet the demanding conditions of the automotive cooling system
• Maintains optimum engine performance temperatures

Includes gasket, fits 1939 to 1960 Champion, 1956 Golden Hawk, 1961 to 1966 All, 1963 to 1985 Avanti and Trucks, M5, M15 and M15A.