Four Seasons 1810NK A/C Compressor and Component Kit - Front

Complete A/C Kit for Classic GM Trucks

Restore cabin cooling with the Four Seasons Complete A/C Kit, Part Number 1810NK. This complete air conditioning kit includes the major components needed for an R134a retrofit or replacement on select Chevrolet and GMC applications, with fitment covering classic C10, K10, C1500, K1500, and related models.

Four Seasons Complete A/C Kit 1810NK is built around a new compressor and matched service components, making it a practical choice for Chevrolet C10 and GMC K1500 owners replacing worn HVAC parts on R4 compressor systems.

Key Features

• Complete air conditioning kit with new compressor
• Includes compressor oil: PAG Oil /150
• Uses R134a refrigerant type
• Expansion device type: orifice tube
• Orifice tube: white, standard style, 0.072 in. diameter
• Receiver drier/accumulator with female O-ring inlet and outlet fittings
• Kit includes compressor, accumulator, orifice tube, oil, and O-rings
• Limited lifetime warranty

Product Details

This Four Seasons Complete A/C Kit is a direct-fit service solution for vehicles listed with R4 compressor setups. The kit centers on compressor replacement and includes the matched accumulator and orifice tube needed to service the system correctly for R134a use. The accumulator measures 3.500 inches in diameter and 9.000 inches in length, with 0.750-inch female O-ring inlet and outlet fittings.

Compatible With select 1976-1984 Chevrolet and GMC trucks and SUVs, including Chevrolet C10, K10, C20, K20, C30, K5 Blazer, and GMC C1500, K1500, C2500, K2500, and K3500 applications. Fits 1984 Chevrolet C10, 1984 GMC K1500, and other listed R4 compressor configurations across the covered model years.

This part cross-references Four Seasons 1810NK for the same application.

Common Problems This Kit Can Address

• Weak or inconsistent A/C cooling from a worn compressor
• Contaminated or aging compressor oil in the system
• Restricted refrigerant flow from a failing orifice tube
• Moisture control issues caused by an old accumulator
• Leaks at aged O-ring sealing points during A/C service

Installation Notes and Tips

Verify compressor style, switch configuration, pulley details, and system layout before ordering. This kit is listed for vehicles with R4 compressor applications and specific notes such as compressor with switch or without switch, plus accumulator or drier tank configurations. Replace the accumulator and orifice tube during compressor service, evacuate the system, and charge with the specified R134a refrigerant and PAG Oil /150.

Quality Assurance

Four Seasons backs this Complete A/C Kit with a limited lifetime warranty. The matched components and application-specific fitment help support a proper repair on covered Chevrolet and GMC models.