Four Seasons 3995R A/C Compressor and Component Kit

Four Seasons 3995R A/C Compressor Kit

Restore cabin cooling on compatible GM and Pontiac vehicles with the Four Seasons PAC-Kit w/ Reman Compressor, part number 3995R. This A/C compressor kit is built for R4 compressor applications and includes fitment-specific notes for switch-equipped systems, pulley variations, metric-thread setups, and orifice-tube configurations.

Key Features

• Four Seasons PAC-Kit w/ Reman Compressor for R4 compressor applications
• Part number 3995R for direct catalog identification
• Fits a wide range of 1977-1987 Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models
• Application notes cover compressor switch, pulley diameter, metric threads, and orifice tube requirements
• Used on classic A/C systems including Chevrolet Impala, Pontiac T1000, and Oldsmobile Cutlass Supreme

Detailed Description

Four Seasons 3995R is an A/C compressor kit for older vehicle HVAC systems that use the R4 compressor platform. The PAC-Kit w/ Reman Compressor designation identifies a remanufactured compressor application with vehicle-specific notes to help match the correct system configuration. Compatible With 1977-1987 Buick LeSabre, Regal, Riviera, Century, Skylark, and related GM platforms, as well as Chevrolet Impala, Caprice, Camaro, Corvette, Malibu, Monte Carlo, and Pontiac Bonneville, Grand Prix, Firebird, and LeMans applications.

This part cross-references common compressor kit applications for the same vehicle platforms. Use the fitment notes to confirm switch style, pulley diameter, metric-thread compressor details, and related HVAC components before ordering.

What It Is Used For

• Replacing a worn or failed A/C compressor in R4-equipped systems
• Addressing loss of cooling performance in classic GM HVAC systems
• Correcting compressor noise, seizure, or clutch-related compressor failure
• Restoring refrigerant circulation in vehicles with aging A/C hardware
• Matching vehicle-specific compressor configurations on older Buick, Chevrolet, Oldsmobile, Cadillac, and Pontiac models

Installation Notes and Tips

Verify the compressor style and system notes against your original unit before installation. Confirm whether your vehicle uses a compressor with switch, a 4-5/8 inch or 5 inch pulley, metric threads, or an orifice-tube setup. For best results, inspect the rest of the A/C system for contamination or wear before installing the replacement compressor.

Quality Assurance

Four Seasons supplies HVAC replacement parts for automotive applications, and this remanufactured compressor kit is cataloged for specific OE-style fitment on listed vehicles. Part number 3995R is identified for direct application matching across the supported GM and Pontiac platforms.