Four Seasons 20325SK A/C Compressor Replacement Service Kit

Four Seasons A/C Installer Kit for Malibu and LaCrosse

Four Seasons 20325SK is an A/C compressor replacement service kit built for select Chevrolet Malibu and Buick LaCrosse applications. It combines the core service components needed when replacing an air conditioning compressor, with PAG 46 oil that is compatible with R1234yf and R134a refrigerant systems.

Part of the Four Seasons A/C Installer Kits line, this service kit is focused on helping restore proper A/C operation with application-specific components for the 2016-2024 Chevrolet Malibu and 2017-2019 Buick LaCrosse.

Key Features

• Four Seasons part number 20325SK
• A/C compressor replacement service kit for HVAC service work
• Includes compressor oil, expansion valve, and desiccant bag kit
• PAG 46 oil formulation compatible with R1234yf and R134a refrigerants
• Block-type expansion device
• Expansion valve inlet and outlet use sealing washer connections
• Includes gasket or seal components
• Limited lifetime warranty

Product Details

This kit is engineered for compressor replacement service on vehicles that use a block-type expansion device and sealing washer connections at the expansion valve. The included PAG 46 oil supports service on systems using either R1234yf or R134a refrigerant, and the desiccant bag kit helps address moisture control during A/C repair. Four Seasons backs the 20325SK with more than 50 years of mobile A/C experience and product testing focused on long-term operation.

This part cross-references Monroe Shocks & Struts (e.g., MUK20402, PK1400) for the same application.

Vehicle Fitment

• Fits 2016-2024 Chevrolet Malibu, N/A; includes: desiccant bag kit, expansion valve, compressor oil, necessary O-rings and gaskets, cap and valve kit; A/C Installer Kits
• Fits 2017-2019 Buick LaCrosse, N/A; includes: desiccant bag kit, expansion valve, compressor oil, necessary O-rings and gaskets, cap and valve kit; A/C Installer Kits

Common Problems This Kit Helps Address

• Compressor replacement service on a leaking or worn A/C system
• Moisture contamination in the refrigerant circuit
• Improper refrigerant oil type during compressor service
• Expansion valve service needs during A/C repair
• Seal and gasket replacement during HVAC maintenance

Installation Notes

Verify refrigerant type and system requirements before service. Confirm the vehicle uses the correct expansion valve style and sealing washer connections before installation. Replace the compressor oil with the specified PAG 46 oil and follow the vehicle service procedure for evacuation, charging, and leak checking after repair. For best results, inspect the A/C system for contamination before installing the new components.

Quality Assurance

Four Seasons engineers and tests its products for dependable operation, drawing on more than 50 years of mobile A/C experience. Part number 20325SK is covered by a limited lifetime warranty.