Four Seasons 3734NK A/C Compressor and Component Kit - Front

Overview of Four Seasons Complete A/C Kit 3734NK

The Four Seasons Complete A/C Kit 3734NK is designed to restore the air conditioning system in select Chevrolet, GMC, and Saab vehicles. This comprehensive kit includes a new compressor and essential components to ensure reliable A/C performance in models like the Chevrolet Trailblazer and GMC Envoy.

• Includes new compressor (part 78561) and accumulator (part 83222)
• Compressor oil included for proper lubrication
• Standard black orifice tube with 0.072 inch diameter
• Receiver drier/accumulator with P-nut fittings and 3.5 inch diameter
• 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 78561) that comes pre-filled with the appropriate compressor oil to maintain optimal lubrication and performance. The kit also includes an accumulator (83222) and a standard black orifice tube (38638) with a 0.072 inch diameter, designed to regulate refrigerant flow efficiently. The receiver drier/accumulator measures 3.5 inches in diameter and 8 inches in length, equipped with 0.75 inch P-nut inlet and outlet fittings (19.05 mm) for secure connections. This kit is specifically engineered for R134a refrigerant systems, ensuring compatibility with the air conditioning setups in Chevrolet Trailblazer, GMC Envoy, Envoy XL, Envoy XUV, Trailblazer EXT, and Saab 9-7x models.

About the Four Seasons Complete A/C Kit Line

The Four Seasons Complete A/C Kit line provides a full set of components necessary for a comprehensive air conditioning system repair. By including a new compressor along with critical parts like the accumulator and orifice tube, these kits simplify the replacement process and help restore system efficiency. The Complete A/C Kit 3734NK is tailored to fit specific vehicle models, offering a matched set of parts that meet OEM specifications.

Common Applications and Problem Resolution

• Replaces worn or failed A/C compressors in Chevrolet Trailblazer and GMC Envoy models
• Addresses refrigerant flow issues caused by clogged orifice tubes
• Resolves moisture and contamination problems with a new receiver drier/accumulator
• Improves cooling performance in Saab 9-7x air conditioning systems
• Eliminates oil leaks and compressor failures by providing fresh compressor oil

Installation Notes and Tips

• Ensure system is properly evacuated before installation to prevent contamination
• Use the included compressor oil to maintain lubrication and avoid premature wear
• Verify compatibility with vehicle refrigerant type R134a prior to installation
• Replace all included seals and gaskets to ensure leak-free connections
• Follow manufacturer torque specifications for P-nut fittings on the receiver drier/accumulator

Quality Assurance and Warranty

The Four Seasons Complete A/C Kit 3734NK is backed by a limited lifetime warranty, providing assurance of its durability and performance. Each component is manufactured to meet or exceed industry standards, ensuring reliable operation in Chevrolet, GMC, and Saab vehicles. This warranty supports long-term use and helps protect your investment in air conditioning system repairs.