Four Seasons 39478 A/C Expansion Valve
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Four Seasons
 Expansion Valve

Four Seasons 39478 A/C Expansion Valve

Brand Four Seasons 39478
Color Aluminum
Description Expansion Valves
Liquid Inlet Fitting Gender Female
Liquid Inlet Fitting Thread Diameter No. 6
Liquid Inlet Size IN 0.4
Liquid Inlet Size MM 10.15
Liquid Inlet Style Sealing Washer
Liquid Inlet Thread Type Not Threaded
Liquid Inlet Type Sealing Washer
Liquid Outlet Fitting Gender Female
Liquid Outlet Fitting Thread Diameter No. 8
Liquid Outlet Style Sealing Washer
Liquid Outlet Thread Type Not Threaded
Liquid Outlet Type Sealing Washer
Lqd Out Size IN 0.46
Lqd Out Size MM 11.8
Material Aluminum
Meets / Exceeds OEM? Yes
Mounting Hole Quantity 2
O-Ring A Number/Desc [24401] / Slim Line Sealing Washer
O-Ring B Number/Desc [24402] / Slimline Washer
O-Ring C Number/Desc [24403] / Slimline Washer
O-Ring D Number/Desc [24404] / Slimline Washer
Refrigerant Type R134A
Style w/o Solenoid
Suc In Size IN 0.63
Suc In Size MM 16
Suc Out Size IN 0.72
Suc Out Size MM 18.3
Suction Inlet Fitting Gender Female
Suction Inlet Fitting Thread Diameter No. 10
Suction Inlet Style Sealing Washer
Suction Inlet Thread Type Not Threaded
Suction Inlet Type Sealing Washer
Suction Outlet Fitting Gender Female
Suction Outlet Fitting Thread Diameter No. 12
Suction Outlet Style Sealing Washer
Suction Outlet Thread Type Not Threaded
Suction Outlet Type Sealing Washer
Super Heat -8.000
Switch Included? Not Included
Tonnage 1.5
Type Block Type
Product line Expansion Valve
Fits Jeep and Dodge · 13 vehicles

OE direct replacement. Meets or exceeds OEM requirements for dependable fit and function.

Aluminum block type. Lightweight construction with sealing-washer connections for secure sealing.

R134A compatible. Built for modern refrigerant systems without a solenoid.

Cross-references Four Seasons 39478, Global Parts Distributors LLC 3411514 and UAC EX9733C for the same application. See all 12.

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Free returns within 60 days if it doesn't fit when fitment is verified.
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Four Seasons 39478 Expansion Valve

Four Seasons 39478 is a block-type A/C expansion valve for R134A systems. It is built from aluminum and meets or exceeds OEM requirements for direct replacement service on select Jeep Compass, Jeep Patriot, and Dodge Caliber applications.

Key Features

  • Block-type A/C expansion valve for refrigerant metering
  • Aluminum construction with aluminum finish
  • R134A refrigerant type
  • Female suction and liquid connections with sealing washer style fittings
  • 2 mounting holes for OE-style installation
  • Meets or exceeds OEM specifications
  • Style: w/o solenoid
  • Super heat setting: -8.000
  • Direct interchange for Four Seasons 39478

Product Details

The Four Seasons Expansion Valve line is focused on precise refrigerant control at the evaporator inlet, helping maintain proper A/C system balance. Part number 39478 uses a block-style design with female inlet and outlet connections, including No. 10 and No. 12 suction fittings and No. 6 and No. 8 liquid fittings. This configuration supports OE-style service on 2012-2017 Jeep Compass, 2012-2017 Jeep Patriot, and 2012 Dodge Caliber models equipped with R134A air conditioning systems. This part cross-references UAC EX9733C for the same application.

What It Helps Address

  • Inconsistent cabin cooling on Jeep Compass and Jeep Patriot A/C systems
  • Improper refrigerant flow through the evaporator circuit
  • Expansion valve restriction or sticking
  • Temperature control issues caused by worn OE valve components
  • Service replacement needs on R134A HVAC systems

Installation Notes

Verify the vehicle uses the correct block-type expansion valve layout, R134A refrigerant, and matching suction and liquid fitting sizes before installation. Replace sealing washers as required during A/C service, and evacuate and recharge the system according to factory procedures after component replacement. Confirm fitment for 2012-2017 Jeep Compass, 2012-2017 Jeep Patriot, or 2012 Dodge Caliber before ordering.

Quality Assurance

Four Seasons 39478 is engineered to meet or exceed OEM specifications for replacement use. The Four Seasons Expansion Valve line is built for accurate refrigerant metering and dependable service in OE-style HVAC repairs.

Related reading

This part fits 13 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2017JeepCompassN/AExpansion Valve
2017JeepPatriotN/AExpansion Valve
2016JeepCompassN/AExpansion Valve
2016JeepPatriotN/AExpansion Valve
2015JeepCompassN/AExpansion Valve
2015JeepPatriotN/AExpansion Valve
2014JeepCompassN/AExpansion Valve
2014JeepPatriotN/AExpansion Valve
2013JeepCompassN/AExpansion Valve
2013JeepPatriotN/AExpansion Valve
2012DodgeCaliberN/AExpansion Valve
2012JeepCompassN/AExpansion Valve
2012JeepPatriotN/AExpansion Valve
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 39478Global Parts Distributors LLC — 3411514UAC — EX9733C180320217478759478313129068157052AAA17478EX9733MT55112T39478