Four Seasons 4781NK A/C Compressor and Component Kit
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Four Seasons
 Complete A/C Kit

Four Seasons 4781NK A/C Compressor and Component Kit

Brand Four Seasons 4781NK
Compressor Oil Included Included
Compressor Oil Type Oil
Expansion Device Type Orifice Tubes
Gasket / Seals? Included
Kit Includes 68192 (New Compressor), 83089 (Accum), 38635 (Orifice), 59007 (Oil), O-Rings
Orifice Dia. IN .062
Orifice Tube Color Red
Orifice Tube Style Standard
Receiver Drier/Accumulator Diameter IN 3.000
Receiver Drier/Accumulator Inlet Fitting Size IN 0.625
Receiver Drier/Accumulator Inlet Fitting Size MM 19.050
Receiver Drier/Accumulator Inlet Fitting Type Male Springlock
Receiver Drier/Accumulator Length IN 9.000
Receiver Drier/Accumulator Outlet Fitting Size IN 0.625
Receiver Drier/Accumulator Outlet Fitting Size MM 15.875
Receiver Drier/Accumulator Outlet Fitting Type P-Nut Fitting
Refrigerant Type R134a
Type Complete Air Conditioning Kit w/ New Compressor
Warranty Limited Lifetime
Product line Complete A/C Kit
Fits Ford · 4 vehicles

Complete A/C kit. Includes a new compressor, accumulator, orifice tube, oil, and O-rings.

Orifice tube design. Uses a standard red tube with a .062-inch opening for precise flow control.

Seals included. Compressor oil and gasket seals come with the kit for a more complete repair.

Cross-references Four Seasons 4781NK, 520246 and MK1083 for the same application. See all 3.

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Order total $271.74
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all A/C Compressor and Component Kit options

Complete A/C Kit for Ford Super Duty

Four Seasons 4781NK is a complete air conditioning kit with a new compressor for select Ford Super Duty trucks. It is built for 2008-2009 Ford F-250 Super Duty and 2008-2009 Ford F-350 Super Duty applications equipped with an FS20 compressor.

The Four Seasons Complete A/C Kit line brings together the major components needed for a full compressor-side service in one package. This kit includes the new compressor, accumulator, orifice tube, oil, and O-rings to support a complete R134a system repair on the Ford F-250 Super Duty and Ford F-350 Super Duty.

  • Four Seasons Part Number: 4781NK
  • Complete air conditioning kit with new compressor
  • Includes compressor oil and O-rings
  • Uses a standard red orifice tube with .062 in. diameter
  • Receiver drier/accumulator included with male springlock inlet and P-nut outlet fittings
  • Designed for R134a refrigerant systems
  • Limited lifetime warranty

Detailed Product Overview

Four Seasons 4781NK is a Complete A/C Kit engineered for direct service on select Ford Super Duty trucks. The kit includes 68192 new compressor, 83089 accumulator, 38635 orifice tube, 59007 oil, and O-rings, giving you the core components needed for a compressor replacement and related A/C system refresh. It is specified for vehicles using the FS20 compressor and is listed for 2008-2009 Ford F-250 Super Duty and 2008-2009 Ford F-350 Super Duty models. Cross-reference part numbers for the same application include 520246 and MK1083.

Common A/C Problems This Kit Addresses

  • Loss of cooling performance from a worn or failed compressor
  • Restricted refrigerant flow caused by a clogged or incorrect orifice tube
  • Moisture or contamination concerns after compressor failure
  • System leaks at aged seals and O-rings
  • Accumulator replacement needs during a full R134a A/C service

Installation Notes and Tips

Verify FS20 compressor application before ordering. Replace the accumulator and orifice tube during compressor service, and flush the system as needed to remove debris from the failed component. Confirm refrigerant type is R134a and check all fittings, seals, and oil charge specifications against the vehicle service information before evacuation and recharge.

Quality Assurance

Four Seasons backs this kit with a limited lifetime warranty. The Complete A/C Kit format helps streamline parts selection by grouping the compressor, accumulator, orifice tube, oil, and sealing components needed for the listed Ford Super Duty applications.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2009FordF-250 Super Duty6.4LV8N/Aw/ FS20 Compressor; Includes: 68192 (New Compressor), 83089 (Accum), 38635 (Orifice), 59007 (Oil), O-Rings; Complete A/C Kit
2009FordF-350 Super Duty6.4LV8N/Aw/ FS20 Compressor; Includes: 68192 (New Compressor), 83089 (Accum), 38635 (Orifice), 59007 (Oil), O-Rings; Complete A/C Kit
2008FordF-250 Super Duty6.4LV8N/Aw/ FS20 Compressor; Includes: 68192 (New Compressor), 83089 (Accum), 38635 (Orifice), 59007 (Oil), O-Rings; Complete A/C Kit
2008FordF-350 Super Duty6.4LV8N/Aw/ FS20 Compressor; Includes: 68192 (New Compressor), 83089 (Accum), 38635 (Orifice), 59007 (Oil), O-Rings; Complete A/C Kit
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 4781NK520246MK1083