Cometic Chevy Gen1 SB V8 .031in Fiber Oil Pan Gasket Kit-Left Side Dipstick-Thick & Thin Front SealsAFM 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 1969 1974,1976 1979 Avanti II Base 1977 Buick Century Base 1977 1979 Buick Century Custom 1978 1979 Buick Century Limited 1978 1979 Buick Century