Four Seasons 2461NK A/C Compressor and Component Kit

Complete A/C Kit for GM R4 Applications

Four Seasons 2461NK is a Complete A/C Kit built for select GM vehicles with an R4 compressor setup. It combines the major air conditioning service components needed for a full compressor replacement, including a new compressor, accumulator, orifice tube, oil, and O-rings.

Compatible With 1985-1988 Chevrolet Monte Carlo, 1985-1988 Oldsmobile Cutlass Supreme, 1985-1987 Buick Regal, 1986-1987 Chevrolet El Camino, 1985-1987 Oldsmobile Cutlass, 1985-1987 Oldsmobile Cutlass Salon, 1986-1987 Pontiac Grand Prix, and related applications listed below.

Key Features

• Four Seasons Complete A/C Kit, part number 2461NK
• Includes new compressor, accumulator, orifice tube, PAG oil, and O-rings
• Uses R134a refrigerant applications
• Compressor oil included: PAG Oil /150
• Orifice tube style: standard, white, 0.072 in. diameter
• Accumulator dimensions: 3.500 in. diameter, 9.000 in. length
• Female insert O-ring inlet and male insert O-ring outlet fittings on the accumulator
• Limited lifetime warranty

Product Details

The Four Seasons Complete A/C Kit line is built to simplify air conditioning service by grouping the core replacement parts needed for a proper repair. This 2461NK kit is configured for vehicles using an R4 compressor and includes the components specified for the application: 58228 new compressor, 33185 accumulator, 38623 orifice tube, 59003 oil, and O-rings. It is a direct-fit service solution for select Chevrolet Monte Carlo, Oldsmobile Cutlass Supreme, Buick Regal, Chevrolet El Camino, Oldsmobile Cutlass, Oldsmobile Cutlass Salon, and Pontiac Grand Prix models listed in the fitment data.

This part cross-references 520102 and MK1159 for the same application.

Common Repair Uses

• Replacing a worn or noisy A/C compressor
• Restoring cooling performance after compressor failure
• Addressing contamination in the air conditioning system
• Replacing a restricted or incorrect orifice tube
• Refreshing the accumulator during major A/C service

Installation Notes

Verify the vehicle’s compressor style, pulley diameter, and coil position before ordering. Fitment notes include R4 compressor applications, with some listings requiring a 5.0 in. or 5.5 in. pulley and a 9 o’clock coil position. The system should be evacuated, flushed as needed, and charged with the correct R134a refrigerant and PAG oil specification after installation. Replace all sealing surfaces and confirm the accumulator inlet and outlet fitting types match the vehicle.

Quality Assurance

Four Seasons 2461NK is backed by a limited lifetime warranty. The kit is assembled for application-specific service on confirmed GM fitments and uses the listed compressor oil type, expansion device, and sealing components for the repair.