This is a very nice heater core. This is a copper brass construction heater core. These copper brass versions are very hard to find. The inlet is 5/8" and the outlet is 3/4". 1963, 1964, 1965, 1966, 1967, 1968, 1969, and 1970 Riviera models.
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 Box Seals Gaskets Weatherstrip 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
