Four Seasons 2791N A/C Compressor and Component Kit

Four Seasons PAC-Kit w/ New Compressor 2791N

Four Seasons 2791N is an A/C compressor kit for select GM full-size cars and wagons equipped with the R4 compressor. It is built for direct replacement service on applications such as Buick LeSabre, Chevrolet Caprice, and Pontiac Parisienne models from the mid-1980s through 1990.

The PAC-Kit w/ New Compressor line groups the core A/C service components needed for compressor replacement on supported vehicles, helping streamline repair planning for older R4-based HVAC systems.

Key Features

• Four Seasons A/C Compressor Kit for R4 compressor applications
• Fits select 1984-1990 Buick, Chevrolet, Oldsmobile, and Pontiac vehicles
• Application-specific coverage for Buick LeSabre, Chevrolet Caprice, Pontiac Safari, and related models
• Includes fitment notes for pulley, switch, coil, and thread configurations where required
• Part number 2791N for catalog and service reference

Detailed Description

Four Seasons 2791N is an HVAC A/C compressor kit intended for vehicles listed in the fitment data with an R4 compressor. Coverage includes 1984-1990 Buick LeSabre, 1985 Buick Regal, 1984-1990 Chevrolet Caprice, 1985 Chevrolet Impala, 1984-1985 Oldsmobile 98, 1984-1985 Oldsmobile Custom Cruiser, 1984-1985 Oldsmobile Delta 88, 1985 Oldsmobile Delta 88, 1984-1985 Pontiac Parisienne, and 1987-1989 Pontiac Safari applications. Use the fitment notes to confirm pulley diameter, switch style, coil position, and thread configuration before ordering. This part cross-references no additional part numbers in the provided data.

What It Helps Address

• Loss of A/C compressor function on R4-equipped GM vehicles
• Noisy or failing compressor operation
• Reduced cabin cooling performance
• Service replacement on older Buick LeSabre and Chevrolet Caprice platforms
• Fitment matching for Pontiac Parisienne and Safari R4 systems

Installation Notes and Tips

Verify the existing compressor style against the listed notes before installation. Confirm pulley diameter, switch presence, coil orientation, and thread type where specified for your vehicle. Flush the system, replace the accumulator and orifice tube as listed in the fitment notes, and charge the system with the correct oil and refrigerant specifications for the vehicle.

Quality Assurance

Four Seasons is a recognized HVAC parts brand with cataloged application coverage for service replacement. Part number 2791N is listed with detailed vehicle-specific fitment data to support accurate ordering for compatible Buick, Chevrolet, Oldsmobile, and Pontiac applications.