Circulate refrigerant through your classic GM's A/C system with the Four Seasons Remanufactured A/C Compressor 57223, a GM R4 unit that drops in across a wide run of 1975-1978 General Motors cars and trucks — including the Buick Century, Chevrolet C10 and Camaro, GMC Jimmy, Oldsmobile Cutlass, and Pontiac Firebird (engine listed as All). See the Buyer's Guide tab for the full application list.
- 100% tested: every remanufactured compressor is checked so function and noise level meet or exceed OE specifications.
- Pre-charged: ships with 3 ounces of PAG oil for R134a or R1234yf applications.
- Leak-checked: individually vacuum and pressure tested to confirm no leaks.
- Install-ready: comes with the R12/R134A/1234yf O-rings and sealing washers (O-ring 24619, qty 2) and an included clutch.
This GM R4 compressor uses a 12-volt clutch coil at the 12 o'clock position, a single-groove V-belt pulley (5.000 in outside diameter, 0.500 in belt width), a case-mount design, and a spade connector. The compatible refrigerant is R134A with PAG 150 oil. A switch is not included, and mounting hardware is not included — consult the vehicle service information for the correct fasteners. Sold individually. Signs the original compressor may need replacing include no cold air, a noisy or seized clutch, or refrigerant leaks; diagnose the cause before replacing.
Manufacturer part number 57223.
