Four Seasons 40030SK A/C Compressor Replacement Service Kit

Four Seasons A/C Installer Kit for GM SUVs

Four Seasons 40030SK is an A/C compressor replacement service kit built for front-system repairs on select GM and Saab SUVs. It combines the core service parts needed for an R134a repair, including PAG 46 compressor oil, seals, and the accumulator assembly.

This Four Seasons A/C Installer Kit is a direct-fit service solution for 2003-2009 Chevrolet Trailblazer and GMC Envoy applications, along with related Trailblazer EXT, Envoy XL, Envoy XUV, Buick Rainier, Oldsmobile Bravada, and Saab 9-7x models listed below.

Key Features

• Part number 40030SK from Four Seasons A/C Installer Kits
• Includes accumulator, orifice tube kit, compressor oil, O-ring/gasket pack, and cap and valve kit
• Compressor oil included: PAG Oil / 46
• Built for R134a refrigerant systems
• Gaskets and seals included for service work
• Accumulator dimensions: 3.500 in. diameter, 8.000 in. length
• Accumulator inlet and outlet fittings: 0.750 in. P-nut style
• Limited lifetime warranty

Product Details

Four Seasons 40030SK is part of the A/C Installer Kits line, a service-focused product line for compressor replacement jobs. This kit is organized around the components commonly replaced during front A/C system service, with the accumulator, orifice tube kit, compressor oil, and sealing components included in one package. It is specified for R134a systems and uses PAG 46 oil, making it a practical match for vehicles that require this refrigerant and lubricant combination.

For fitment-based searches, this kit is commonly referenced for 2003-2009 Chevrolet Trailblazer and 2003-2009 GMC Envoy service applications. It also covers 2003-2006 Chevrolet Trailblazer EXT, 2003-2006 GMC Envoy XL, 2004-2005 GMC Envoy XUV, 2004 Buick Rainier, 2003 Oldsmobile Bravada, and 2005-2009 Saab 9-7x. This part cross-references Monroe Shocks & Struts (e.g., 551223, MUK40002) for the same application.

Common Repair Uses

• Replacing A/C compressor-related service components during front-system repair
• Restoring proper refrigerant flow after accumulator or orifice tube service
• Addressing leaks at seals, O-rings, or gasket interfaces
• Servicing an R134a system that requires PAG 46 oil
• Supporting A/C repair on Chevrolet Trailblazer and GMC Envoy platforms

Installation Notes

Verify the vehicle uses a front A/C system without rear A/C before ordering. Confirm accumulator fitting style, refrigerant type, and oil specification against the original system before installation. Replace the included sealing components during assembly, and follow the vehicle service procedure for evacuation, charging, and leak checking after repair.

Quality Assurance

Four Seasons 40030SK is backed by a limited lifetime warranty. The kit is built to service the listed GM and Saab applications with the specified R134a and PAG 46 requirements.