Four Seasons 4642NK A/C Compressor and Component Kit

Complete A/C Kit for Fusion, Milan, and Zephyr

The Four Seasons Complete A/C Kit 4642NK is a complete air conditioning kit with a new compressor for select Ford, Mercury, and Lincoln applications. It combines the major replacement components needed for a proper A/C service, including the compressor, filter drier, expansion valve, oil, and O-rings.

Compatible with 2006-2009 Ford Fusion, 2006-2009 Mercury Milan, and 2006 Lincoln Zephyr equipped with an SP17 compressor and a 4-3/8" diameter pulley.

Key Features

• Four Seasons Complete A/C Kit, part number 4642NK
• Includes a new compressor, filter drier, expansion valve, oil, and O-rings
• Uses R134a refrigerant
• Block-type expansion device with sealing washer inlet and outlet connections
• Compressor oil is included
• Gaskets and seals are included
• Limited lifetime warranty

Product Details

The Four Seasons Complete A/C Kit line is built for full-system air conditioning repair, bringing together the compressor and related service components in one application-specific package. This 4642NK kit is configured for vehicles using an SP17 compressor and a 4-3/8" pulley, making it a direct-match solution for common Ford Fusion A/C compressor replacement needs, as well as Mercury Milan and Lincoln Zephyr service work. The kit includes Four Seasons 68669 compressor, 83361 filter drier, 39306 expansion valve, 59007 oil, and O-rings for a complete A/C system refresh.

This part cross-references 520325 and MK1128 for the same application.

Common Problems This Kit Can Address

• Loss of cabin cooling performance
• Noisy or seized A/C compressor operation
• Restricted refrigerant flow through a worn expansion valve
• Moisture or contamination in the A/C system after compressor failure
• Reduced system efficiency from aged sealing components

Installation Notes and Tips

Verify the vehicle uses an SP17 compressor with a 4-3/8" diameter pulley before installation. Replace the filter drier and expansion valve during compressor service, and follow proper evacuation, flushing, and recharge procedures for R134a systems. Confirm all sealing surfaces are clean and use the included O-rings and seals during assembly.

Quality Assurance

Four Seasons backs this Complete A/C Kit 4642NK with a limited lifetime warranty.