Four Seasons 40022SK A/C Compressor Replacement Service Kit

Mercedes-Benz A/C Service Kit for Front System Repair

Restore front air conditioning service on select Mercedes-Benz SUVs and crossovers with the Four Seasons 40022SK A/C Installer Kit. This A/C compressor replacement service kit brings together the core components needed for a proper compressor-related repair, including PAG 46 compressor oil, a block-type expansion valve, and a filter drier for R134a systems.

Four Seasons A/C Installer Kits are built for service work on the HVAC system, and this kit is organized around the parts commonly replaced during compressor service on Mercedes-Benz GL-Class, ML-Class, and R-Class applications. The 40022SK is a practical choice when you need the right service components for a front A/C repair.

Key Features

• Part number 40022SK from Four Seasons A/C Installer Kits
• Includes compressor oil with PAG Oil / 46 specification
• Includes filter drier, expansion valve, O-ring/gasket pack, and cap and valve kit
• R134a refrigerant system application
• Block-type expansion device with insert O-ring inlet and outlet connections
• Receiver drier/accumulator dimensions: 1.77 in. diameter, 15.82 in. length
• Pad mount outlet fitting type with .437 in. outlet fitting size
• Limited lifetime warranty

Product Details

The Four Seasons 40022SK is an A/C compressor replacement service kit for Mercedes-Benz vehicles that use an R134a HVAC system. It includes the service parts typically addressed during compressor replacement, helping support a complete front-system repair on models such as the Mercedes-Benz GL350, GL450, GL500, GL550, R350, ML350, ML550, ML63 AMG, ML450, ML500, GL320, ML320, R320, R500, and R63 AMG. The kit is centered on the components needed for compressor service, including the expansion valve, filter drier, compressor oil, and sealing components.

This Four Seasons A/C Installer Kits product line is aimed at service-focused HVAC repairs where the technician needs matched replacement components for the compressor circuit. If you are searching for a Mercedes-Benz GL450 A/C compressor replacement service kit or a Mercedes-Benz ML350 front A/C service kit, part number 40022SK is the reference to use.

This part cross-references Monroe Shocks & Struts (e.g., 550812, MUK40010) for the same application.

Common Repair Uses

• Replacing worn A/C service components during compressor replacement
• Addressing restricted refrigerant flow caused by a failing expansion valve
• Restoring system dryness with a new filter drier
• Replacing aged O-rings and seals found during HVAC service
• Servicing front air conditioning on Mercedes-Benz GL-Class, ML-Class, and R-Class vehicles

Installation Notes and Tips

Before installation, verify the vehicle’s refrigerant type and system layout. This kit is specified for R134a applications and uses PAG Oil / 46. Confirm the expansion valve style, inlet and outlet connection type, and receiver drier dimensions against the original parts before assembly. Proper evacuation, leak checking, and refrigerant recharge procedures should be followed after service.

Fitment includes front kit applications for 2006-2012 Mercedes-Benz R350, 2007-2012 Mercedes-Benz GL450, 2008-2012 Mercedes-Benz GL500, 2008-2012 Mercedes-Benz GL550, 2007-2009 Mercedes-Benz GL320, 2007-2009 Mercedes-Benz R320, 2006-2007 Mercedes-Benz R500, and 2007 Mercedes-Benz R63 AMG. It also covers 2006-2011 Mercedes-Benz ML350, 2008-2011 Mercedes-Benz ML550, 2010-2011 Mercedes-Benz ML63 AMG, 2010 Mercedes-Benz ML450, 2006-2010 Mercedes-Benz ML500, and 2007-2009 Mercedes-Benz ML320.

Quality Assurance

Four Seasons backs this A/C service kit with a limited lifetime warranty. The 40022SK is built for service applications where correct component selection and system compatibility matter, making it a dependable reference for Mercedes-Benz A/C repair work.