Four Seasons 6618R A/C Compressor Kit - Front and Rear

Four Seasons 6618R PAC-Kit Overview

Four Seasons 6618R is a PAC-Kit with reman compressor for classic GM truck and SUV HVAC systems. It is built for front and rear air conditioning applications that use an A6 compressor, with fitment covering 1976-1984 Chevrolet and GMC models.

• Part number 6618R from Four Seasons
• PAC-Kit w/ Reman Compressor for A/C compressor replacement service
• Fits front and rear HVAC applications
• For systems using an A6 compressor
• Includes fitment for 5.12" diameter pulley, metric threads, and single-groove pulley configurations where listed
• Vehicle coverage includes Chevrolet C10 Suburban, K5 Blazer, GMC Jimmy, and related GMC/Chevrolet truck platforms

Product Details

The Four Seasons PAC-Kit line groups the compressor with related air conditioning service components for a more complete repair on older GM platforms. This 6618R kit is listed for 1976-1984 Chevrolet and GMC vehicles, including Chevrolet C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, K5 Blazer, and GMC Jimmy, along with GMC C1500 Suburban, C2500 Suburban, K1500 Suburban, and K2500 Suburban applications. The part number 6618R is also listed for G-series vans and related GMC models shown in the fitment data.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Restores cooling performance when the compressor is worn or no longer builds pressure
• Addresses noisy compressor operation in older A6-based A/C systems
• Helps correct weak cabin cooling caused by compressor failure
• Supports service on vehicles with metric-thread compressor connections
• Provides a direct replacement path for classic Chevrolet and GMC front and rear A/C setups

Installation Notes

Verify compressor style, pulley diameter, thread type, and pulley groove count before installation. Confirm the vehicle uses the listed A6 compressor configuration and match the fitment notes for the exact model year. System flushing and proper oil handling are important on older HVAC repairs, especially when replacing a failed compressor.

Quality Assurance

Four Seasons is a recognized HVAC parts brand with coverage focused on service-ready air conditioning components for automotive repair. Part 6618R is cataloged as a PAC-Kit with reman compressor for the listed Chevrolet and GMC applications.