Four Seasons 10620SK A/C Compressor Replacement Service Kit

Four Seasons 10620SK A/C Service Kit

Four Seasons 10620SK is an A/C compressor replacement service kit for R134a systems. It combines the core service parts needed for front A/C repair on select Buick, Pontiac, and Oldsmobile applications, including the filter drier, expansion valve, compressor oil, O-ring/gasket pack, and cap and valve kit.

Built under the Four Seasons A/C Installer Kits line, this kit is organized for compressor replacement service work where the system needs matched sealing and metering components. The included PAG Oil / 46 and sealing-washer style expansion valve connections support service on vehicles using a block-type expansion device.

Key Features

• Part number 10620SK
• Four Seasons A/C Installer Kits product line
• Includes filter drier, expansion valve, compressor oil, O-ring/gasket pack, and cap and valve kit
• Compressor oil included: PAG Oil / 46
• Refrigerant type: R134a
• Expansion device type: block type
• Gaskets and seals included
• Limited lifetime warranty

Vehicle Fitment

• Fits 2002-2005 Buick Rendezvous, front kit.
• Fits 2001-2005 Pontiac Aztek, front kit.
• Fits 2001-2005 Pontiac Montana, front kit.
• Fits 2002-2004 Oldsmobile Silhouette, front kit.
• Fits 2001 Oldsmobile Silhouette, front kit; drier with pad mount.

This part cross-references Monroe Shocks & Struts (e.g., 550688, MUK10112) for the same application.

What It Helps Address

• Compressor replacement service on an R134a A/C system
• Loss of cooling after a compressor failure
• Leaking seals or O-rings at service connections
• Restricted refrigerant flow through the expansion valve
• Moisture contamination in the A/C circuit after repair

Installation Notes

Verify the vehicle’s A/C system uses R134a refrigerant and a block-type expansion device before installation. Match the pad-mount drier and sealing-washer connections to the original system layout, and replace the included sealing components during compressor service. Evacuate and recharge the system according to factory procedures after repairs are complete.

Quality Assurance

Four Seasons backs this kit with a limited lifetime warranty. The 10620SK service kit is assembled for direct compressor replacement work on the listed Buick Rendezvous, Pontiac Aztek, Pontiac Montana, and Oldsmobile Silhouette applications.