Four Seasons 3984NK A/C Compressor and Component Kit

Complete A/C Kit for Silverado and Sierra

Four Seasons 3984NK is a complete air conditioning kit with a new compressor for select 2002-2004 Chevrolet Silverado HD and GMC Sierra HD trucks. It is built around R134a service and includes the core components needed for a compressor replacement on the listed applications.

The Four Seasons Complete A/C Kit line brings together matched HVAC components for a more direct repair path. This kit includes compressor oil, an accumulator, an orifice tube, and O-rings, along with the new compressor, to support a full A/C system refresh on the correct truck configuration.

Key Features

• Part number 3984NK from Four Seasons Complete A/C Kit
• Complete air conditioning kit with new compressor
• Includes compressor oil and O-rings
• Uses an orifice tube expansion device
• R134a refrigerant type
• Limited lifetime warranty
• Compatible with select Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 applications

Detailed Product Overview

Four Seasons 3984NK is configured for trucks using a 13 mm orifice tube setup and a receiver drier/accumulator with P-nut fittings. The kit includes compressor 78348, accumulator 83211, orifice tube 38638, oil 59007, and O-rings. The orifice tube is black, standard style, with a 0.072 in diameter, and the accumulator measures 3.500 in diameter and 8.000 in length.

Fits 2002 Chevrolet Silverado 2500 HD, N/A; 2002 Chevrolet Silverado 3500, N/A; 2002 GMC Sierra 2500 HD, N/A; 2002 GMC Sierra 3500, N/A; 2003 Chevrolet Silverado 2500 HD, N/A; 2003 Chevrolet Silverado 3500, N/A; 2003 GMC Sierra 2500 HD, N/A; 2003 GMC Sierra 3500, N/A; 2004 Chevrolet Silverado 2500 HD, N/A; 2004 Chevrolet Silverado 3500, N/A; 2004 GMC Sierra 2500 HD, N/A; 2004 GMC Sierra 3500, N/A. This part cross-references Four Seasons 3984NK for the same application.

Common Repair Uses

• Restores cooling performance after compressor failure
• Addresses weak or inconsistent cabin air temperature
• Replaces worn accumulator and orifice tube components during A/C service
• Supports repair of contaminated or low-performing R134a systems
• Helps correct noise or seizure issues tied to the compressor assembly

Installation Notes and Tips

Verify compressor style, orifice tube diameter, and accumulator fitting orientation before ordering. This kit is listed for trucks with 10S17F or 10S20F compressor configurations, with application notes that vary by model year and equipment package. Always flush the system as needed, replace the accumulator during compressor service, and evacuate and recharge the system to the correct R134a specification after installation.

Quality Assurance

Four Seasons 3984NK is backed by a limited lifetime warranty. The kit is assembled for the listed Chevrolet Silverado HD and GMC Sierra HD applications to support a complete A/C compressor replacement using the specified components and refrigerant type.