Four Seasons 3966N A/C Compressor and Component Kit - Front

Four Seasons 3966N A/C Compressor Kit

Four Seasons 3966N is a PAC-Kit with a new compressor for select 1984 Chevrolet S10, Chevrolet S10 Blazer, GMC S15, and GMC S15 Jimmy applications. It is built for vehicles using an R4 compressor and is listed with the related service components needed for this application.

Key Features

• Brand: Four Seasons
• Brand line: PAC-Kit w/ New Compressor
• Part number: 3966N
• Category: HVAC A/C compressor kit
• Application-specific fitment for 1984 Chevrolet S10 and 1984 GMC S15 platforms
• Fits 1984 Chevrolet S10, N/A
• Fits 1984 Chevrolet S10 Blazer, front
• Fits 1984 GMC S15, N/A
• Fits 1984 GMC S15 Jimmy, front

Product Details

The Four Seasons PAC-Kit line is organized around complete A/C service for a specific vehicle application, combining a new compressor with the related components identified for the system. For this listing, 3966N is matched to 1984 Chevrolet S10 and Chevrolet S10 Blazer, as well as 1984 GMC S15 and GMC S15 Jimmy models equipped with an R4 compressor. Use this part number when searching for a Four Seasons 3966N A/C compressor kit for 1984 Chevrolet S10 or GMC S15 HVAC repair.

Common A/C Problems Addressed

• Loss of cabin cooling from compressor failure
• Noisy or seized A/C compressor operation
• Refrigerant circulation problems in the HVAC system
• System contamination after compressor wear
• Restoration of A/C function on R4-equipped trucks and SUVs

Installation Notes and Tips

Verify the vehicle uses an R4 compressor before ordering. Match the listed fitment exactly: 1984 Chevrolet S10, 1984 Chevrolet S10 Blazer, 1984 GMC S15, or 1984 GMC S15 Jimmy. Confirm the compressor position and system configuration against the vehicle’s existing HVAC setup, and follow standard A/C service procedures for evacuation, flushing, oil handling, and component replacement.

Quality Assurance

Four Seasons is a recognized HVAC parts brand with application-specific cataloging for compressor replacement. Part number 3966N is listed for direct vehicle-specific use on the applications shown above.