Four Seasons 4189NK A/C Compressor and Component Kit - Front and Rear

Reliable A/C Compressor Kit for Buick, Chevrolet, Pontiac, and Saturn

The Four Seasons Complete A/C Kit 4189NK offers a comprehensive solution for restoring air conditioning performance in select Buick Montana, Chevrolet Uplander, Pontiac Montana, Relay, Terraza, and Saturn models. Designed to replace worn components, this kit includes everything needed for a professional-grade A/C system repair.

• Includes new compressor (part 78499), filter drier (83237), and expansion valve (39151)
• Compressor oil included for proper lubrication and system longevity
• Block type expansion device with sealing washer inlet and outlet valves
• Receiver drier with 1.75-inch diameter and 10-inch length, featuring pad mount inlet and outlet fittings
• Compatible with R134a refrigerant systems
• Limited lifetime warranty for added confidence

About the Four Seasons Complete A/C Kit Line

The Complete A/C Kit line from Four Seasons is engineered to provide a full replacement solution for automotive air conditioning systems. This kit includes a new compressor along with essential components such as the filter drier and expansion valve, ensuring compatibility and optimal performance. The inclusion of compressor oil and properly matched fittings simplifies installation and helps maintain system integrity.

Detailed Product Description

The Four Seasons 4189NK kit is tailored for HVAC systems requiring a full compressor replacement and related components. The new compressor (part 78499) comes pre-filled with the correct type of compressor oil, ensuring proper lubrication from the start. The block type expansion device uses sealing washers on both inlet and outlet valves to prevent leaks and maintain system pressure. The receiver drier measures 1.75 inches in diameter and 10 inches in length, with pad mount fittings on both inlet and outlet sides, designed to fit securely within the vehicle’s A/C system. This kit is specifically designed for vehicles using R134a refrigerant, including Buick Montana, Chevrolet Uplander, Pontiac Relay, Terraza, and Saturn models, providing a precise fit and reliable operation.

Common Applications and Issues Addressed

• Restores cooling performance in Buick Montana and Chevrolet Uplander A/C systems
• Replaces failing or noisy compressors in Pontiac Relay and Terraza models
• Eliminates refrigerant leaks caused by worn expansion valves or receiver driers
• Addresses compressor oil contamination or depletion
• Prevents system blockages with a new filter drier included

Installation Notes and Tips

• Ensure system is evacuated and flushed before installation to remove contaminants
• Verify compatibility with vehicle refrigerant type R134a prior to installation
• Use included compressor oil to maintain proper lubrication levels
• Replace all included components together to ensure system integrity and performance
• Check sealing washers on expansion valve inlet and outlet for proper fit to prevent leaks

Quality Assurance and Warranty

Four Seasons backs the Complete A/C Kit 4189NK with a limited lifetime warranty, reflecting confidence in the durability and reliability of the components. Each kit undergoes quality checks to meet OEM standards, ensuring that the replacement compressor and associated parts perform consistently in Buick, Chevrolet, Pontiac, and Saturn vehicles.