Receiver Drier for Old Air Products SuperKool Condenser Assembly Fits the following Old Air Products SuperKool Condenser Assemblies: 51-3569DS and 21-3569 PS for 1969 Chevelle 51-3471DS and 21-3471PS for 1970-72 Chevelle 51-7379DS and 51-7379PS for 1973-79 Ford Truck 51-7211 for 1967-72 Chevrolet