Four Seasons 2451NK A/C Compressor and Component Kit - Front and Rear

Complete A/C Kit for Ford E-Series

Restore cabin cooling with the Four Seasons Complete A/C Kit, part number 2451NK. This complete air conditioning kit includes a new compressor, accumulator, orifice tube, expansion valve, compressor oil, and O-rings for a service-ready repair on select Ford E-150, E-250, E-350 Super Duty, and Econoline models.

Built for R134a systems, this Four Seasons Complete A/C Kit is organized around the components commonly replaced during a compressor failure or major A/C service. It is a practical choice for Ford E-150 front and rear A/C, Ford E-250 front and rear A/C, and Ford Econoline front and rear A/C applications that use the listed compressor styles.

Key Features

• Four Seasons Complete A/C Kit, part number 2451NK
• Includes a new compressor, accumulator, orifice tube, expansion valve, oil, and O-rings
• Compressor oil included
• Gaskets and seals included
• Uses R134a refrigerant
• Limited lifetime warranty
• Cross-reference part numbers: 520455, MK1089

Product Details

The Brand Line Complete A/C Kit groups the major service components needed for a full air conditioning repair into one application-specific package. This kit includes compressor 78588, accumulator 83015, orifice tube 39071, expansion valve 38683, oil 59007, and O-rings. The accumulator features a 3.500-inch diameter, 11-inch length, a female O-ring inlet, and a male springlock outlet. The orifice tube uses a standard black/white design with a 0.072-inch diameter.

Compatible With 2002-2006 Ford E-150, front and rear; 2002-2006 Ford E-250, front and rear; 2002-2006 Ford E-350 Super Duty, front and rear; and 2002-2006 Ford Econoline, front and rear. Also fits 2003-2005 Ford E-150 Club Wagon, front and rear; 2002-2005 Ford E-350 Club Wagon, front and rear; 2002 Ford E-150 Econoline, front and rear; 2002 Ford E-150 Econoline Club Wagon, front and rear; 2002 Ford E-250 Econoline, front and rear; and 2002 Ford E-350 Econoline Club Wagon, front and rear. Select 2006 Ford E-150, E-250, and Econoline applications with FS20 compressor design are also listed.

Common Repair Uses

• Loss of cooling performance in the Ford E-150, E-250, or Econoline A/C system
• Compressor wear, seizure, or internal contamination
• Restricted refrigerant flow from a worn or incorrect orifice tube
• Moisture control issues after opening the A/C system
• Leak repair service requiring new seals and matched replacement components

Installation Notes

Verify compressor style and vehicle application before installation, especially on 2006 FS20 and earlier scroll compressor configurations. Replace the accumulator and orifice tube during compressor service, evacuate the system, and charge with the correct R134a refrigerant amount per vehicle specifications. Confirm all O-ring and line connections are clean and properly seated before reassembly.

Quality Assurance

Four Seasons backs this kit with a limited lifetime warranty. Part number 2451NK is built as a complete A/C compressor kit for service on the listed Ford E-Series applications, helping streamline a full-system repair with matched components.