Four Seasons 9126NK A/C Compressor and Component Kit - Front and Rear

Complete A/C Kit for Express and Savana

Four Seasons 9126NK is a complete air conditioning kit with a new compressor for select Chevrolet Express and GMC Savana vans. It combines the major A/C service components needed for front and rear HVAC systems, making it a direct-fit solution for common compressor-related repairs.

The Four Seasons Complete A/C Kit line is built for full-system service, bringing together the compressor, accumulator, orifice tube, expansion valve, oil, and O-rings in one package for a more streamlined repair process.

Key Features

• Complete air conditioning kit with new compressor
• Includes compressor oil and O-rings
• Uses R134a refrigerant
• Expansion device type: orifice tubes
• Orifice tube diameter: 0.072 in., white standard style
• Receiver drier/accumulator dimensions: 3.500 in. diameter, 8.750 in. length
• P-nut fitting inlet and outlet on the accumulator
• Limited lifetime warranty

Detailed Description

Four Seasons 9126NK is a Four Seasons A/C compressor kit engineered for vehicles that use a front and rear HVAC layout. It includes a new compressor, accumulator, orifice tube, expansion valve, compressor oil, and O-rings, giving technicians the core parts needed to restore refrigerant flow and system operation. This part cross-references Monroe Shocks & Struts (e.g., 520357, MK1077) for the same application.

Compatible With Chevrolet Express 1500, Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 1500, GMC Savana 2500, and GMC Savana 3500 applications listed below. The 9126NK part number is also a useful reference when sourcing a complete A/C compressor replacement for 2003-2023 Chevrolet Express and GMC Savana vans.

What It Helps Address

• Loss of cooling from a worn or failed compressor
• Restricted refrigerant flow caused by a clogged orifice tube
• Moisture or contamination issues in the A/C system
• Improper system operation after compressor replacement
• Front and rear HVAC performance concerns in van applications

Installation Notes and Tips

• Verify compressor style and vehicle-specific fitment before installation.
• Replace the accumulator, orifice tube, expansion valve, and O-rings during A/C service to help support proper system sealing and flow.
• Use the specified R134a refrigerant and the included compressor oil type during reassembly.
• Inspect the system for contamination, leaks, and debris before charging.
• Confirm the accumulator dimensions and P-nut fittings match the original setup.

Quality Assurance

Four Seasons 9126NK is backed by a limited lifetime warranty. As a complete A/C kit, it provides the major service components needed for a full compressor replacement on select Chevrolet Express and GMC Savana models.

Vehicle Fitment

• Fits 2021-2023 Chevrolet Express 2500, front and rear.
• Fits 2021-2023 Chevrolet Express 3500, front and rear.
• Fits 2021-2023 GMC Savana 2500, front and rear.
• Fits 2021-2023 GMC Savana 3500, front and rear.
• Fits 2020 Chevrolet Express 2500, front and rear.
• Fits 2020 Chevrolet Express 3500, front and rear.
• Fits 2003-2020 Chevrolet Express 3500, front and rear.
• Fits 2017-2020 GMC Savana 2500, front and rear.
• Fits 2017-2020 GMC Savana 3500, front and rear.
• Fits 2003-2019 Chevrolet Express 2500, front and rear.
• Fits 2003-2017 GMC Savana 2500, front and rear.
• Fits 2003-2017 GMC Savana 3500, front and rear.
• Fits 2003-2014 Chevrolet Express 1500, front and rear.
• Fits 2003-2014 GMC Savana 1500, front and rear.