Oil Drain Plug Gasket - 65270 Chevrolet C10 C20 75-79, Camaro 67-79, Dodge Challenger 70-74 Fits 1/2, M12 Fitment Information: Cadillac Calais 1966-1975 Cadillac Commercial Chassis 1975-1975 Cadillac DeVille 1966-1975 Cadillac Eldorado 1966-1975 Cadillac…