Four Seasons 57777 front A/C compressor for the 1991 Buick Regal and other vehicles compresses refrigerant and circulates it through the A/C system. This remanufactured Four Seasons AC compressor is a GM V5 unit with its clutch included.
- Remanufactured compressors are 100 percent tested for compressor function and noise level
- Pre-charged with 3 ounces of PAG oil for R134a or R1234yf applications
- Each compressor is individually vacuum and pressure tested to ensure no leaks
- O-rings and sealing washers for R12, R134a and R1234yf installs come with the compressor
- Clutch included, with a 12 V DC coil
Quick facts
- Part: Four Seasons 57777 A/C compressor
- Fits: 1991 Buick Regal and other vehicles
- Position: Front
- Condition: Remanufactured
Weak cooling, a noisy compressor or a clutch that does not engage can mean the compressor is wearing out. A low refrigerant charge, a blown fuse or a blocked orifice tube can leave you with weak cooling too, so find the cause before you buy. The system runs on a single compressor, and this listing is one unit.
Fits
This front A/C compressor is a direct-fit replacement for the 1991 Buick Regal, the 1990-1991 Oldsmobile Silhouette, the 1989-1991 Chevrolet Beretta and a wide range of other Buick, Chevrolet, Oldsmobile and Pontiac models. If your car is not named here, open the "Vehicles it fits" section and look up your exact model and year.
Specifications
Fit and size
- Position: front
- Quantity per vehicle: 1
- Mounting type: ear mount
- Outside pulley diameter: 4.500 in
- Pulley: 6 grooves, serpentine belt
Build and materials
- Condition: remanufactured
- Compressor type: GM V5
- Refrigerant type: R134a
- Compatible refrigerant oil: PAG 150
- Country of origin: Mexico
In the box
One remanufactured A/C compressor with its clutch and two O-rings (24615). Mounting hardware and the switch are not included; the old fasteners may not be reusable, so plan on new ones.
Installation notes
- This compressor has an R12 control valve. When retrofitting to R134a, control valve 38846 is recommended for optimum system performance.
Frequently Asked Questions
Is this the right AC compressor for the 1991 Buick Regal?
Yes. Four Seasons 57777 is a front A/C compressor listed for the 1991 Buick Regal. Open the "Vehicles it fits" section to check other years and models.
Does this AC compressor work in the 1990-1991 Oldsmobile Silhouette?
Yes. Four Seasons 57777 is listed for the 1990-1991 Oldsmobile Silhouette, and the Silhouette takes one compressor.
Are Four Seasons remanufactured AC compressors tested for leaks?
Yes. Each unit is individually vacuum and pressure tested to ensure no leaks, and function and noise level are tested on every compressor.
What refrigerant oil does the Four Seasons compressor need?
PAG 150 is the compatible refrigerant oil. The compressor arrives pre-charged with 3 ounces of PAG oil, and its refrigerant type is R134a.
Do I need new mounting bolts for this front A/C compressor?
Yes. Mounting hardware is not included, and the old bolts may not be reusable. The clutch and two O-rings are included; the switch is not.
