Four Seasons 4050R A/C Compressor and Component Kit

Four Seasons 4050R PAC-Kit Overview

Four Seasons 4050R is a PAC-Kit with a remanufactured A/C compressor for select GM and Pontiac applications using the A6 compressor platform. It is built for drivers restoring factory-style air conditioning performance on classic Chevrolet, Cadillac, and Pontiac vehicles.

The Four Seasons PAC-Kit w/ Reman Compressor line brings together the core A/C service components needed for a compressor replacement on supported vehicles. This kit is listed for applications such as the Chevrolet El Camino, Malibu, Monte Carlo, Caprice, Impala, Corvette, Monza, Cadillac DeVille and Fleetwood, plus Pontiac Firebird, Grand Prix, and Phoenix.

Key Features

• Part number 4050R remanufactured A/C compressor kit
• For vehicles equipped with the A6 compressor platform
• Application-specific fitment for select 1977-1983 GM cars
• Includes compressor-related service components referenced in the fitment notes
• Compatible with classic Chevrolet, Cadillac, and Pontiac HVAC systems

Fitment Details

• Fits 1983 Chevrolet El Camino, N/A
• Fits 1982 Chevrolet El Camino, N/A
• Fits 1982 Chevrolet Malibu, N/A
• Fits 1982 Chevrolet Monte Carlo, N/A
• Fits 1977-1981 Chevrolet Caprice, N/A
• Fits 1977-1981 Chevrolet El Camino, N/A
• Fits 1977-1981 Chevrolet Impala, N/A
• Fits 1977-1981 Chevrolet Malibu, N/A
• Fits 1977-1981 Chevrolet Monte Carlo, N/A
• Fits 1980-1981 Pontiac Firebird, N/A
• Fits 1978-1981 Pontiac Grand Prix, N/A
• Fits 1977-1979 Cadillac DeVille, N/A
• Fits 1978-1979 Chevrolet Corvette, N/A
• Fits 1977-1979 Chevrolet Monza, N/A
• Fits 1977-1979 Pontiac Phoenix, N/A
• Fits 1978 Cadillac Fleetwood, N/A
• Fits 1977-1978 Cadillac Fleetwood, N/A

What This Compressor Kit Helps Address

• Weak or inconsistent cabin cooling
• Noisy or worn A/C compressor operation
• Loss of refrigerant system performance after compressor failure
• Restoration work on original-style GM A/C systems
• Service needs on A6 compressor-equipped vehicles

Installation Notes

Verify compressor style, pulley diameter, and thread configuration before ordering. Fitment notes call out A6 compressor applications, including some vehicles with a 5-3/4 inch pulley, metric threads, and single-groove pulley setups. Follow proper A/C service procedures, including system flushing and oil management, before installing the replacement compressor.

Quality Assurance

Four Seasons is a recognized aftermarket HVAC brand, and the 4050R PAC-Kit is cataloged for direct application matching on the listed vehicles. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.