HVAC Heater Control Valve for 1977, 1982-83, 1985-87 Buick Regal - Four Seasons

1977 Buick Regal Submodel: Coupe; Engine: 5.7L V8; 3 Outlets; Right Angle Hose Connection; w/ Threads;. Vacuum Closes Non-Bypass Heater Valve. 1977 Buick Regal Submodel: Sedan; Engine: 5.7L V8; 3 Outlets; Right Angle Hose Connection; w/ Threads;.