Vacuum Closes Non-Bypass Heater Valve. Heater Valve. 1980 Chevrolet Impala Engine: 5.7L V8 DIESEL;. 1980 Chevrolet Impala Engine: 5.7L V8 GAS; 5/8 In. Hose x 3/4 In. 1981 Chevrolet Impala Engine: 5.7L V8 DIESEL;.
74853 Four Seasons HVAC Heater Control Valve Coolant Heater Valve
FOUR SEASONS HVAC Heater Core Fits 1992-1999 Oldsmobile 88
FOUR SEASONS HVAC Heater Core Fits 1990 GMC K2500
FOUR SEASONS HVAC Heater Core Fits 1987 GMC R1500
FOUR SEASONS HVAC Heater Core Fits 1975-1978 GMC P35
FOUR SEASONS HVAC Heater Core Fits 1987-1989 GMC R2500