Four Seasons 1518NK A/C Compressor Kit

Complete A/C Kit for GM Compact Cars

Four Seasons 1518NK is a complete air conditioning kit with a new compressor for select GM applications using a V5 compressor and R134a refrigerant. It combines the major replacement components needed for a full A/C service, including the compressor, filter drier, expansion valve, PAG oil, and O-rings.

Compatible with 1994-1998 Buick Skylark, 1994-1998 Oldsmobile Achieva, and select Pontiac Grand Am, Chevrolet Corsica applications, this Four Seasons Complete A/C Kit is built for direct-fit service work. The 1518NK kit is organized for technicians replacing a worn compressor and related system components in one repair.

Key Features

• Four Seasons Complete A/C Kit, part number 1518NK
• Includes a new compressor, filter drier, expansion valve, PAG oil, and O-rings
• Uses PAG Oil /150 and R134a refrigerant
• TXV expansion device type
• Receiver drier/accumulator with male insert O-ring inlet and outlet fittings
• Limited lifetime warranty
• Cross-references Monroe Shocks & Struts 520208 and MK1169 for the same application

Product Details

This Four Seasons Complete A/C Kit is built around the 58980 compressor and supporting service components needed for a proper air conditioning repair. The kit includes the 33158 filter drier, 38906 expansion valve, 59003 oil, and O-rings, helping restore system function after compressor failure or contamination. The receiver drier/accumulator measures 3.000 inches in diameter and 6.500 inches in length, with 0.500-inch outlet fitting size.

Use 1518NK when servicing GM vehicles that call for a V5 compressor and expansion valve setup. Fits 1994-1998 Buick Skylark, 1994-1998 Oldsmobile Achieva, 1994-1998 Pontiac Grand Am, and 1994-1996 Chevrolet Corsica, with notes for R134a and expansion valve applications where listed. The part number 1518NK is a practical choice for restoring cooling performance in these model-specific HVAC systems.

Common Problems This Kit Addresses

• Loss of cabin cooling from compressor wear or internal failure
• Contaminated A/C system components after compressor damage
• Restricted refrigerant flow caused by a failing expansion valve
• Moisture-related system issues tied to an aged filter drier
• Leaking seals and O-rings in the air conditioning circuit

Installation Notes and Tips

Before installation, verify the vehicle uses a V5 compressor and the correct expansion valve configuration. Replace the filter drier during compressor service, evacuate the system, and recharge with the specified R134a refrigerant and PAG Oil /150. Confirm all fittings and O-rings are seated correctly to help prevent leaks after assembly.

Quality Assurance

Four Seasons backs this Complete A/C Kit with a limited lifetime warranty. The 1518NK kit is assembled for service-focused replacement on select Buick, Oldsmobile, Pontiac, and Chevrolet applications, with components matched to the listed HVAC configuration.