Four Seasons 6550N A/C Compressor Kit

Four Seasons PAC-Kit w/ New Compressor 6550N

Four Seasons 6550N is an A/C compressor kit for select 1975 Chevrolet truck applications with an R4 compressor, metric threads, and a compressor switch. It is built for 1975 Chevrolet C10, C20, C30, K10, and K20 models that match the listed configuration.

Key Features

• Four Seasons PAC-Kit w/ New Compressor line
• Direct-fit A/C compressor kit for listed 1975 Chevrolet truck applications
• For vehicles with R4 compressor setup
• For compressor systems with metric threads
• For compressor systems with a switch
• Part number 6550N for application matching and catalog lookup

Application Details

This Four Seasons compressor kit is specified for 1975 Chevrolet C10, 1975 Chevrolet C20, 1975 Chevrolet C30, 1975 Chevrolet K10, and 1975 Chevrolet K20 models with the noted R4 compressor configuration. The PAC-Kit w/ New Compressor line is aimed at restoring A/C compressor function on these classic Chevrolet trucks when the existing compressor assembly no longer performs correctly. Part number 6550N is the reference to use when verifying the correct HVAC compressor kit for your vehicle.

What It Helps Address

• Loss of A/C compressor operation
• Weak or inconsistent cabin cooling
• Noisy compressor operation
• Compressor failure on R4-equipped Chevrolet C10, C20, C30, K10, or K20 trucks
• Service replacement needs for metric-thread compressor systems

Installation Notes

Confirm the vehicle uses an R4 compressor, metric threads, and a compressor switch before ordering. Match the listed notes to the existing HVAC system on your 1975 Chevrolet C10, C20, C30, K10, or K20. Follow standard A/C service procedures, including system evacuation, flushing where required, and correct oil handling for the replacement compressor kit.

Quality Assurance

Four Seasons is a recognized HVAC parts brand, and the PAC-Kit w/ New Compressor product line is cataloged for application-specific replacement use. Verify fitment by year, make, model, and compressor configuration before installation.