Four Seasons 3984NK A/C Compressor and Component Kit

Overview of Four Seasons Complete A/C Kit 3984NK

The Four Seasons Complete A/C Kit 3984NK is designed to restore the air conditioning system in Chevrolet and GMC heavy-duty trucks. This kit includes a new compressor and essential components to ensure reliable cooling performance for Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500 models.

• Includes new compressor (part 78348) and accumulator (part 83211)
• Compressor oil included for proper lubrication
• Standard black orifice tube with 0.072 inch diameter
• Receiver drier/accumulator with P-nut fittings, 3.5 inch diameter and 8 inch length
• Compatible with R134a refrigerant systems
• Limited lifetime warranty for long-term reliability

Detailed Product Features and Specifications

This Complete A/C Kit from Four Seasons features a new compressor (part number 78348) that comes pre-filled with the correct type of compressor oil, ensuring optimal lubrication and performance. The kit includes an accumulator (part 83211) designed with P-nut inlet and outlet fittings, measuring 3.5 inches in diameter and 8 inches in length, which helps maintain system moisture control and refrigerant flow. The orifice tube included is a standard style, black in color, with a precise 0.072 inch diameter to regulate refrigerant flow effectively. This kit is engineered specifically for use with R134a refrigerant, matching the requirements of Chevrolet Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500 trucks.

About the Four Seasons Complete A/C Kit Product Line

The Complete A/C Kit product line by Four Seasons provides comprehensive solutions for air conditioning system repairs by including all necessary components in one package. This approach simplifies the replacement process by combining a new compressor with critical parts such as the accumulator and orifice tube, ensuring compatibility and reducing the risk of installation errors. The 3984NK kit is part of this line, tailored to meet the specific HVAC needs of select Chevrolet and GMC heavy-duty trucks.

Common Applications and Issues Addressed

• Replacement of a failing or seized A/C compressor
• Resolving low or no cooling performance in heavy-duty Chevrolet and GMC trucks
• Fixing refrigerant leaks related to worn or damaged accumulator or orifice tube
• Addressing moisture contamination in the A/C system
• Upgrading worn components to restore factory-level air conditioning efficiency

Installation Notes and Tips

• Ensure system is fully evacuated and flushed before installation to prevent contamination
• Use the included compressor oil to properly lubricate the new compressor
• Verify compatibility with R134a refrigerant systems prior to installation
• Replace all included components together to maintain system integrity and performance
• Follow manufacturer torque specifications for P-nut fittings on the accumulator

Quality Assurance and Warranty Information

The Four Seasons Complete A/C Kit 3984NK is backed by a limited lifetime warranty, providing assurance of its durability and performance. Each component is manufactured to meet or exceed OEM standards, ensuring reliable operation in Chevrolet Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500 vehicles. This warranty supports long-term use and helps protect your investment in the vehicle's air conditioning system.