Cometic Chevy Mark-IV Big Block V8 .047in Fiber Intake Mani Gasket SetAFM is a chemically blown, compounded nitrile synthetic rubber bonded to an aluminum core with temperature resistance of over 250F. AFM material has an 85 percent recovery while maintaining strong torque retention. AFM does not require gasket sealers or re torque. This Part Fits: Year Make Model Submodel 1965 1975 Chevrolet Bel Air Base 1965 1972 Chevrolet Biscayne Base 1973 1974 Chevrolet Blazer Base 1969 1972 Chevrolet Brookwood Base 1978 1980