Four Seasons 6399R A/C Compressor Kit - Front

Four Seasons 6399R A/C Compressor Kit

The Four Seasons PAC-Kit with Reman Compressor is built for classic GM HVAC service where the original A6 compressor setup is still in place. This A/C compressor kit supports direct-fit repair work on select Buick, Chevrolet, Cadillac, Oldsmobile, Pontiac, and GMC applications with factory air or expansion-valve systems.

Key Features

• Four Seasons PAC-Kit w/ Reman Compressor for A/C compressor replacement
• Designed for vehicles using an A6 compressor configuration
• Includes a remanufactured compressor with 5.12" diameter pulley, metric threads, and single-groove pulley
• Application-specific coverage for front-mounted and N/A-position HVAC layouts
• Part number 6399R for catalog lookup and service matching

Detailed Description

Four Seasons 6399R is an A/C compressor kit for older GM vehicles that require an A6-style compressor service solution. It is listed for 1963-1970 applications across Buick LeSabre, Buick Riviera, Buick Skylark, Chevrolet Bel Air, Chevrolet Caprice, Chevrolet Corvette, Chevrolet El Camino, Chevrolet Impala, Chevrolet Malibu, Oldsmobile Cutlass, Oldsmobile Cutlass Supreme, Oldsmobile 98, Pontiac Firebird, and GMC G15/G1500, G25/G2500, and G35/G3500 vans. The fitment data includes factory air and expansion-valve configurations where specified, making this a focused choice for classic A/C compressor replacement on the exact vehicles shown.

This part cross-references 57098 and 33215 for the same application.

What It Helps Address

• Loss of cabin cooling from a worn or failed A/C compressor
• Noisy compressor operation in an A6-equipped HVAC system
• Low refrigerant circulation caused by compressor wear
• Service replacement on classic GM factory air systems
• Repair work on vehicles with expansion-valve A/C layouts

Installation Notes and Tips

Verify compressor style, pulley diameter, thread type, and pulley groove count before installation. Match the vehicle’s listed notes, including factory air or expansion-valve requirements, and confirm front or N/A position details against the application. For best results, follow standard A/C service procedures for flushing, oil selection, and system evacuation before returning the vehicle to service.

Quality Assurance

Four Seasons supplies this PAC-Kit with a remanufactured compressor for service-focused HVAC repair on the listed classic GM applications. Part number 6399R is cataloged for direct application matching on the vehicles shown above.