Four Seasons 20100SK A/C Compressor Replacement Service Kit

Four Seasons A/C Installer Kit for R134a Service

The Four Seasons 20100SK A/C Installer Kit is built for R134a service on select GM vehicles with an orifice tube expansion system. It combines the core replacement parts needed during compressor service, including an accumulator, orifice tube, PAG oil, O-ring/gasket pack, and cap and valve kit.

Four Seasons A/C Installer Kits are organized for compressor replacement work, helping streamline the parts needed for a proper HVAC service on vehicles such as the Buick Regal, Chevrolet Lumina, and Oldsmobile Cutlass Supreme.

Key Features

• Part number: 20100SK
• Includes accumulator, orifice tube, compressor oil, O-ring/gasket pack, and cap and valve kit
• Uses PAG Oil /150
• Designed for R134a refrigerant systems
• Standard white orifice tube with 0.072 in. diameter
• Accumulator dimensions: 3.500 in. diameter and 8.000 in. length
• Female O-ring inlet and male insert O-ring outlet fittings
• Limited lifetime warranty

Product Details

This Four Seasons A/C Compressor Replacement Service Kit is intended for vehicles using an orifice tube expansion device. The included accumulator and orifice tube support a complete compressor service on confirmed applications, while the supplied PAG oil and sealing components address the parts commonly replaced during HVAC repair. The 20100SK is a direct-fit service kit for select 1994-1997 Buick Regal, Chevrolet Lumina, Oldsmobile Cutlass, and Oldsmobile Cutlass Supreme applications, along with additional Buick, Chevrolet, Oldsmobile, and Pontiac models listed in the fitment data.

This part cross-references Monroe Shocks & Struts (e.g., 550898, MUK20187) for the same application.

What It Helps Address

• Compressor replacement service on R134a A/C systems
• Loss of cooling performance after HVAC component failure
• Leaking or worn accumulator and sealing components
• Restricted refrigerant flow from a worn or incorrect orifice tube
• Service needs on vehicles with an orifice tube expansion device

Installation Notes and Tips

Verify the vehicle uses R134a refrigerant and an orifice tube system before installation. Match the accumulator inlet and outlet fitting styles to the original parts, and replace the O-rings and gaskets during service to maintain sealing integrity. Always follow the vehicle service procedure for oil balancing and refrigerant recovery, evacuation, and recharge.

Fits 1994-1997 Buick Regal, N/A; Fits 1994-1996 Buick Century, N/A; Fits 1994-1997 Chevrolet Lumina, N/A; Fits 1995-1997 Chevrolet Monte Carlo, N/A; Fits 1994-1996 Oldsmobile Cutlass Ciera, N/A; Fits 1994-1997 Oldsmobile Cutlass Supreme, N/A; Fits 1994-1994 Oldsmobile Cutlass Cruiser, N/A; Fits 1994-1997 Oldsmobile Cutlass, N/A; Fits 1994-1996 Pontiac Grand Prix, N/A.

Quality Assurance

Four Seasons backs this A/C service kit with a limited lifetime warranty.