Four Seasons 2573NK A/C Compressor and Component Kit - Front and Rear

Complete A/C Kit for GM SUVs

The Four Seasons 2573NK Complete A/C Kit is a direct-fit air conditioning service solution for select 1997-2000 Chevrolet Tahoe, 1997-2000 GMC Yukon, and 1999-2000 Cadillac Escalade models with an HT6 compressor. It combines the major A/C components needed for a full system refresh, including a new compressor, accumulator, orifice tube, expansion valve, oil, and O-rings.

Built for R134a systems, this Four Seasons Complete A/C Kit is organized for front and rear HVAC applications and uses PAG Oil /150. The 2573NK kit is a practical choice when replacing worn A/C components on a Chevrolet Tahoe, GMC Yukon, or Cadillac Escalade and restoring proper system operation.

Key Features

• Complete A/C compressor kit with new compressor
• Includes compressor oil: PAG Oil /150
• R134a refrigerant system application
• Orifice tube style: standard, .062 in. diameter
• Accumulator with female O-ring inlet and outlet fittings
• Gaskets and seals included
• Limited lifetime warranty
• Four Seasons part number 2573NK

Product Details

The Four Seasons Complete A/C Kit line is built to simplify major air conditioning repairs by grouping the core service parts needed for a compressor replacement. Part number 2573NK includes a new compressor, accumulator, orifice tube, expansion valve, oil, and O-rings, making it a focused solution for restoring refrigerant flow and system sealing in the factory-style R134a setup.

This kit cross-references part number 520183 for the same application. It is listed for 1997-2000 Chevrolet Tahoe, 1997-2000 GMC Yukon, and 1999-2000 Cadillac Escalade with HT6 compressor systems.

Common Problems This Kit Addresses

• Loss of cooling performance from a worn or failing compressor
• Restricted refrigerant flow caused by a clogged orifice tube
• Moisture or contamination in the A/C system after component failure
• Leaking seals or degraded O-rings in the refrigerant circuit
• Inconsistent A/C operation in front and rear HVAC systems

Installation Notes

Before installation, verify HT6 compressor fitment and confirm the vehicle uses R134a refrigerant. Replace the accumulator and related sealing components during service, and follow proper evacuation, flushing, and recharge procedures after the system is opened. Always match the oil type and charge amount to the vehicle and compressor requirements.

Fits 1997-2000 Chevrolet Tahoe, front and rear. Fits 1997-2000 GMC Yukon, front and rear. Fits 1999-2000 Cadillac Escalade, front and rear.

Quality Assurance

Four Seasons backs this kit with a limited lifetime warranty. The 2573NK is built as a complete A/C service package for confirmed applications, giving technicians and DIY installers the core components needed for a proper compressor replacement on select GM SUVs.