This heater box seal set if for the engine bay side of the firewall for the heater boxes. This set is an all inclusive seal set. Not all of the seals / gaskets in the set will be used (depending on which year and weather or not your car has AC).
1963 1964 1965 Buick Riviera Carburetor Gasket & Heat Plate Baffle 401 425
1963 1964 1965 Buick Riviera Blower Motor with Air Conditioning vented 63 64 65
1963 1964 1965 Buick Riviera Heater Core NEW Copper Brass Direct Fit 63 64 65 GS
1963 1964 1965 Buick Riviera Heater Core & Seals Gaskets 63 64 65 GS Direct Fit
Aluminum Radiator For 1960-1965 Cadillac Deville Eldorado Fleetwood / 1960-1963 Cadillac Series 62/1961-1962 Oldsmobile Starfire Super 88/1960 1961 1962 1963 1964 1965
1963 1964 1965 1966 425 Buick Nailhead Valley Pan Gasket Push Rod 63 64 65 66