Four Seasons 39451 A/C Expansion Valve
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Four Seasons
 Expansion Valve

Four Seasons 39451 A/C Expansion Valve

Brand Four Seasons 39451
Color Aluminum
Description Expansion Valves
Liquid Inlet Fitting Gender Female
Liquid Inlet Fitting Thread Diameter No. 6
Liquid Inlet Size IN 0.34
Liquid Inlet Size MM 8.6
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 0.700
Suc Out Size MM 17.7
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 -5.500
Switch Included? Not Included
Tonnage 1.5
Type Block Type
Product line Expansion Valve
Fits Jeep and Chrysler · 13 vehicles

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

Aluminum construction. Lightweight material resists corrosion in demanding A/C service.

Block type design. Built for precise refrigerant flow control in the system.

Cross-references Four Seasons 39451, Global Parts Distributors LLC 3411911 and Mopar 68334777AA for the same application. See all 11.

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Four Seasons 39451 Expansion Valve for Jeep and Chrysler

The Four Seasons 39451 expansion valve is a block-type A/C flow restrictor built for R134A systems. It is an aluminum replacement that meets or exceeds OEM requirements and is listed for 2014-2023 Jeep Cherokee and 2015-2017 Chrysler 200 applications.

Key Features

  • Four Seasons Expansion Valve line, part number 39451
  • Block-type A/C expansion valve for R134A refrigerant systems
  • Aluminum construction with aluminum finish
  • Designed without solenoid
  • Meets or exceeds OEM specifications
  • 1.5 tonnage rating
  • Sealing washer inlet and outlet connections
  • Female suction and liquid fittings with OEM-style dimensions

Product Details

The Four Seasons 39451 expansion valve regulates refrigerant flow into the evaporator to help maintain proper A/C system performance. This block-style valve uses female suction and liquid connections with sealing washer interfaces, including No. 10 and No. 12 suction thread diameters and No. 6 and No. 8 liquid thread diameters. It is engineered for R134A systems and is a direct-fit service part for Jeep Cherokee and Chrysler 200 HVAC repairs. Cross-reference part numbers include Mopar 68334777AA and UAC EX9766C for the same application.

Common Issues This Part Can Address

  • Weak or inconsistent cabin cooling
  • Incorrect refrigerant metering at the evaporator
  • A/C performance loss caused by a worn expansion valve
  • Temperature fluctuations in the HVAC system
  • Service replacement for a leaking or restricted valve

Installation Notes and Tips

Verify refrigerant type, connection style, and system layout before installation. This valve is specified for R134A applications and uses sealing washer-style connections, so matching the inlet and outlet sizes is important during service. Confirm the vehicle application by year, make, and model: Fits 2014-2023 Jeep Cherokee, N/A; Fits 2015-2017 Chrysler 200, N/A.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, making it a specification-based replacement for factory-style HVAC service on Jeep Cherokee and Chrysler 200 models.

Related reading

This part fits 13 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2023JeepCherokeeN/AExpansion Valve
2022JeepCherokeeN/AExpansion Valve
2021JeepCherokeeN/AExpansion Valve
2020JeepCherokeeN/AExpansion Valve
2019JeepCherokeeN/AExpansion Valve
2018JeepCherokeeN/AExpansion Valve
2017Chrysler200N/AExpansion Valve
2017JeepCherokeeN/AExpansion Valve
2016Chrysler200N/AExpansion Valve
2016JeepCherokeeN/AExpansion Valve
2015Chrysler200N/AExpansion Valve
2015JeepCherokeeN/AExpansion Valve
2014JeepCherokeeN/AExpansion Valve
Directly replaces or cross-references 11 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 39451Global Parts Distributors LLC — 3411911Mopar — 68334777AAUAC — EX9766C180277217451759451313138768223041AAA17451T39451