Four Seasons 20256SK A/C Compressor Replacement Service Kit

Four Seasons 20256SK A/C Installer Kit

The Four Seasons 20256SK A/C Compressor Replacement Service Kit is built for front A/C service on select GM full-size trucks and SUVs with R134a systems. It combines the core replacement parts needed for a compressor service job, including PAG 46 oil, seals, and system service components in one package.

Four Seasons A/C Installer Kits are organized for repair work that calls for matched service parts rather than individual pieces. This kit is centered on compressor replacement service for vehicles such as the Chevrolet Silverado, Tahoe, and GMC Yukon, with fitment that also covers Cadillac Escalade applications.

Key Features

• Part number: 20256SK
• Includes accumulator, orifice tube kit, compressor oil, O-ring/gasket pack, and cap and valve kit
• Compressor oil included: PAG Oil / 46
• Gaskets and seals included
• Refrigerant type: R134a
• Receiver drier/accumulator uses P-nut inlet and outlet fittings
• Limited lifetime warranty

Detailed Description

This Four Seasons 20256SK service kit is intended for A/C compressor replacement work where the system needs the supporting components replaced at the same time. The included accumulator measures 3.250 inches in diameter and 8.000 inches in length, with P-nut style fittings for the inlet and outlet. The kit also includes the compressor oil specified for R134a systems, along with the sealing components needed for reassembly.

Compatible vehicle coverage includes 2006-2010 Cadillac Escalade, 2006-2010 Chevrolet Silverado and Suburban applications, 2006-2010 GMC Sierra and Yukon applications, and related Avalanche, Tahoe, and Escalade ESV/EXT fitments. This part cross-references Monroe Shocks & Struts (e.g., 551157, MUK20033) for the same application.

What This Kit Helps Address

• Compressor replacement service on R134a A/C systems
• Leaking or worn O-rings and gaskets at service points
• Accumulator replacement during HVAC repair
• Orifice tube service during compressor work
• System reassembly after A/C component replacement

Installation Notes and Tips

Verify the vehicle’s year, make, model, and rear A/C configuration before ordering. Fitment varies by application, including front-kit and rear-A/C notes on certain Cadillac, Chevrolet, and GMC models. Confirm the accumulator fitting style and the orifice tube specification before installation, and follow standard evacuation, oil balancing, and recharge procedures for R134a service.

Quality Assurance

Four Seasons backs this kit with a limited lifetime warranty. The 20256SK is built as an A/C service kit for compressor replacement work on supported Cadillac, Chevrolet, and GMC applications.