The Vacuum Actuator is used to open and close the various air distribution blend doors throughout the A/C and Heat System.
Actuator Single Port w/Brkt Adjust/Modify 1969-78 Ford/Mercury Models [23-5598]
Actuator Single Port Offset 1968-78 Chevy, Oldsmobile & Pontiac [23-5918]
Actuator Single Port Fresh Air 1973-82 Chevy Trucks (GM#1996500) [23-5937]
Actuator Single Port w/Wire 1959-62 Buick/Cadillac/Olds/Pontiac [23-5901]
Actuator Single Port w/Studs 1-1/4" Centerline 1957 Oldsmobile Models [23-5961]
Actuator Single Port w/Stud in Arm 1967-72 Chevy/GMC Truck [23-5928]