Four Seasons 5940NK A/C Compressor and Component Kit

Complete A/C Kit for Ford Trucks and Bronco

Restore factory air conditioning performance with the Four Seasons Complete A/C Kit, part number 5940NK. This kit combines a new compressor, accumulator, orifice tube, compressor oil, and O-rings for a direct repair on select Ford F-150, F-250, F-350, and Bronco applications with FS10 compressor systems.

Built for R134a refrigerant systems, this complete A/C compressor kit is organized around the core components needed for a proper service on 1990-1993 Ford truck and Bronco platforms. The Four Seasons Complete A/C Kit line is aimed at replacing worn A/C components together so the system can be serviced with matched parts.

Key Features

• Four Seasons part number 5940NK
• Complete air conditioning kit with new compressor
• Includes compressor oil and O-rings
• Uses an orifice tube expansion device
• Blue standard orifice tube with .067 in. diameter
• Accumulator features male insert O-ring inlet and outlet fittings
• Designed for R134a refrigerant systems
• Limited lifetime warranty

Detailed Product Overview

This A/C compressor kit includes 58122 new compressor, 33189 accumulator, 38621 orifice tube, 59007 oil, and O-rings. It is specified for Ford FS10 compressor applications and factory air systems, with fitment notes that vary by model year and build date. For 1991 Bronco applications, coverage is listed both before 7/91 and from 7/91; for 1991-1993 Ford F-150, F-250, and F-350 applications, the notes call for the blue orifice tube and factory air configuration. This part cross-references Four Seasons 5940NK for the same application.

Fits 1990-1993 Ford F-150, N/A. Fits 1990-1993 Ford F-250, N/A. Fits 1990-1993 Ford F-350, N/A. Fits 1991-1992 Ford Bronco, N/A.

What This Repair Can Address

• Weak or inconsistent cabin cooling
• Noisy or failing A/C compressor operation
• Restricted refrigerant flow from a worn orifice tube
• Moisture control issues related to an aging accumulator
• System service needs after compressor replacement

Installation Notes and Tips

Verify FS10 compressor application, factory air equipment, and the correct model-year notes before installation. Match the listed orifice tube color and refrigerant type, and replace the accumulator and O-rings during service to support a proper A/C repair. Confirm the vehicle’s build date on 1991 Bronco and 1991 Ford truck applications, since fitment changes by production timing.

Quality Assurance

Four Seasons backs this Complete A/C Kit, part number 5940NK, with a limited lifetime warranty.