Four Seasons 6494R A/C Compressor Kit - Front and Rear

Four Seasons PAC-Kit A/C Compressor Kit

Restore air conditioning performance on classic Chevrolet and GMC trucks and SUVs with the Four Seasons 6494R PAC-Kit w/ Reman Compressor. This A/C compressor kit is built for 1973-1975 applications using an A6 compressor setup, including fitments for Chevrolet Blazer, C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, K5 Blazer, and GMC Jimmy.

The Four Seasons PAC-Kit line combines the remanufactured compressor with matched HVAC service components for a more complete repair path. Part number 6494R is listed for front and rear applications and is specified for vehicles with metric threads; 1975 models also note a 5.12-inch pulley and single-groove pulley configuration.

Key Features

• Four Seasons PAC-Kit w/ Reman Compressor for A/C service
• Fits 1973-1975 Chevrolet and GMC truck and SUV applications with A6 compressor systems
• Application-specific coverage for Chevrolet Blazer, C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, K5 Blazer, and GMC Jimmy
• Front and rear fitment listed in the catalog data
• Part number 6494R for accurate ordering and catalog lookup

Detailed Description

Four Seasons 6494R is an A/C compressor kit for classic GM platforms that use the A6 compressor design. It is cataloged for 1973-1974 Chevrolet Blazer, C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, and GMC Jimmy models with metric threads and switch-equipped compressor applications, plus 1975 Chevrolet C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, K5 Blazer, and GMC Jimmy models with a 5.12-inch pulley and single-groove pulley specification. If you are servicing a 1973-1975 Chevrolet Blazer or GMC Jimmy A/C system, 6494R provides a direct-fit catalog match for the listed configurations.

This part cross-references common catalog references for the same application, including 57098 and 33204.

Common Problems This Kit Addresses

• Weak or inconsistent cabin cooling from a worn A/C compressor
• Noisy compressor operation in an aging A6 system
• Loss of refrigerant pressure due to compressor wear
• Fitment issues when replacing a compressor on metric-thread GM HVAC systems
• Service delays when sourcing matched components for a classic Chevrolet or GMC A/C repair

Installation Notes and Tips

Verify the existing compressor style, pulley configuration, and thread type before ordering. Match the vehicle year, make, model, and HVAC configuration exactly to the catalog notes, especially on 1975 applications with the 5.12-inch pulley and single-groove pulley callout. Flush the system and replace related service parts as required by the repair procedure, then charge the system to the vehicle specification.

Quality Assurance

Four Seasons supplies HVAC replacement parts for automotive air conditioning service, and this PAC-Kit is cataloged for specific GM truck and SUV applications to support accurate fitment selection. Part number 6494R should be matched to the listed vehicle and compressor details before installation.