1963 Cadillac Series 60 Fleetwood. 1964 Cadillac Series 60 Fleetwood. Compatible Years: 1963 1964. Check Valve, Heater Valve. Vacuum Open Non-Bypass Heater Valve. Heater Valve. Type: Heater Valves. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.
