HVAC Heater Control Valve for 1973-1975, 1979-1981 Buick Century - Four Seasons

Vacuum Closes Non-Bypass Heater Valve. Heater Valve. Type: Heater Valves. 1973 Buick Century Submodel: Coupe; Engine: 5.7L V8;. 1973 Buick Century Submodel: Coupe; Engine: 7.5L V8;. 1973 Buick Century Submodel: Sedan; Engine: 5.7L V8;.