This is a new plastic brake booster sleeve. Goes on the back of the booster between the fire wall and booster. Fits Buick / Chevrolet / Oldsmobile / Cadillac / Corvair / Corvette / Olds / GTO / Camaro / SS / Z/28 / RS / GS / Yenko / GSX / Grand Sport / Trans Am / Formula / Sting Ray / Nova / Chevelle / 442 / Cutlass / W-30 / W-31/ F-85 / Hurst Olds / Bonneville / Catalina / Firebird / Grand Prix / Tempest / Impala / Wildcat / Skylark / Century / Riviera / Malibu / El Camino / Sprint / Impala / Truck / GMC / Tempest / Lemans / Firebird from 1964 / 1965 / 1966 / 1967 / 1968 / 1969 / 1970 / 1971 / 1972 / 1973 / 1974 / 1975 / 1976 / 1977 / 1978 / 1979 / 1980 and 1981.
