Four Seasons 40003SK A/C Compressor Replacement Service Kit

Four Seasons A/C Service Kit for Front and Rear Systems

The Four Seasons 40003SK A/C Installer Kit is built for HVAC service work on select GM and Saturn platforms with front and rear air conditioning systems. It includes the core replacement components needed for an R134a compressor service, along with PAG 46 compressor oil and sealing components for a complete repair path.

Compatible with 2008-2012 Buick Enclave, 2009-2012 Chevrolet Traverse, 2007-2012 GMC Acadia, and 2007-2010 Saturn Outlook, this kit supports A/C compressor replacement service on vehicles that use a block-type expansion device and sealing-washer inlet and outlet connections.

Key Features

• Four Seasons A/C Installer Kits product line
• Part number 40003SK
• Includes compressor oil with PAG Oil / 46 specification
• Includes dessicant bag kit, expansion valve, rear expansion valve, O-ring/gasket pack, and cap and valve kit
• Designed for R134a refrigerant systems
• Block-type expansion device configuration
• Expansion valve inlet and outlet use sealing washer connections
• Gaskets and seals included
• Limited lifetime warranty

Detailed Description

Four Seasons 40003SK is an A/C compressor replacement service kit for vehicles equipped with front and rear HVAC systems. It is organized around the components commonly replaced during compressor service, including the expansion valve hardware, dessicant bag kit, compressor oil, and sealing components. The kit is specified for R134a refrigerant applications and uses PAG 46 oil, making it a practical choice for service on the Buick Enclave, Chevrolet Traverse, GMC Acadia, and Saturn Outlook.

This part cross-references 550461 and MUK40029 for the same application. If you are searching for a Four Seasons 40003SK A/C service kit for 2007-2012 GMC Acadia or a compressor replacement service kit for 2008-2012 Buick Enclave, this listing matches the confirmed vehicle coverage and service configuration.

What This Kit Helps Address

• Compressor replacement service on R134a A/C systems
• Replacement of worn expansion valve components
• Service needs related to contaminated or depleted compressor oil
• Sealing issues at O-ring, gasket, or washer connection points
• Moisture control concerns in the A/C system through dessicant bag replacement

Installation Notes and Tips

Verify refrigerant type, oil specification, and expansion device style before installation. This kit is specified for R134a systems with PAG 46 oil and a block-type expansion device. Confirm sealing-washer inlet and outlet connections during service, and replace all accessible seals and gaskets during compressor replacement to help maintain system integrity.

For fitment, use the confirmed vehicle coverage: Fits 2008-2012 Buick Enclave, N/A; Fits 2009-2012 Chevrolet Traverse, N/A; Fits 2007-2012 GMC Acadia, N/A; Fits 2007-2010 Saturn Outlook, N/A.

Quality Assurance

Four Seasons backs this kit with a limited lifetime warranty. The 40003SK is part of the Four Seasons A/C Installer Kits line, built for service-focused HVAC repairs using the specified compressor oil, seals, and expansion components.