Cometic Chevrolet 348/409 W-Series Big Block V8 .059 Fiber Intake Manifold 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 1961 1965 Chevrolet Bel Air Base 1961 1965 Chevrolet Biscayne Base 1961 Chevrolet Brookwood Base 1961 1965 Chevrolet Impala Base 1964 1965 Chevrolet