Four Seasons 39458 A/C Expansion Valve
OE Quality 60-Day Returns
Four Seasons
 Expansion Valve

Four Seasons 39458 A/C Expansion Valve

Brand Four Seasons 39458
Color Aluminum
Description Expansion Valves
Liquid Inlet Fitting Gender Female
Liquid Inlet Fitting Thread Diameter No. 6
Liquid Inlet Size IN 0.35
Liquid Inlet Size MM 9
Liquid Inlet Style Female Insert O-Ring
Liquid Inlet Thread Type Not Threaded
Liquid Inlet Type O-Ring
Liquid Outlet Fitting Gender Female
Liquid Outlet Fitting Thread Diameter No. 10
Liquid Outlet Style Female Insert O-Ring
Liquid Outlet Thread Type Not Threaded
Liquid Outlet Type O-Ring
Lqd Out Size IN 0.650
Lqd Out Size MM 16.4
Material Aluminum
Meets / Exceeds OEM? Yes
Mounting Hole Quantity 2
O-Ring A Number/Desc [24607] / Green O-Ring
O-Ring B Number/Desc [24610] / Green O-Ring
Refrigerant Type R134A
Style w/o Solenoid
Suc In Size IN 0.650
Suc In Size MM 16.4
Suc Out Size IN 0.65
Suc Out Size MM 16.4
Suction Inlet Fitting Gender Female
Suction Inlet Fitting Thread Diameter No. 10
Suction Inlet Style Female Insert O-Ring
Suction Inlet Thread Type Not Threaded
Suction Inlet Type O-Ring
Suction Outlet Fitting Gender Female
Suction Outlet Fitting Thread Diameter No. 10
Suction Outlet Style Female Insert O-Ring
Suction Outlet Thread Type Not Threaded
Suction Outlet Type O-Ring
Super Heat -3.500
Switch Included? Not Included
Tonnage 1.5
Type Block Type
Product line Expansion Valve
Fits Hyundai · 10 vehicles

OE direct replacement. Meets or exceeds OEM requirements for dependable system service.

Aluminum construction. Lightweight block-type design resists corrosion in HVAC service.

R134A compatible. Built for precise refrigerant flow control in A/C systems.

Cross-references Four Seasons 39458, Global Parts Distributors LLC 3411594 and UAC EX9778C for the same application. See all 9.

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Not what you need? See all A/C Expansion Valve options

Four Seasons 39458 Expansion Valve Overview

The Four Seasons 39458 is a block-type A/C expansion valve for R134A systems. Built from aluminum and engineered to meet or exceed OEM requirements, it regulates refrigerant flow for stable evaporator performance in select Hyundai applications, including Genesis and Equus models.

Four Seasons Expansion Valve line components are built for direct-fit HVAC service where precise refrigerant metering is required. This 39458 valve uses female insert O-ring connections and a w/o solenoid design for a clean OE-style replacement in the factory A/C circuit.

Key Features

  • Part number: 39458
  • Brand: Four Seasons Expansion Valve
  • Block-type A/C expansion valve
  • Aluminum construction
  • Designed for R134A refrigerant systems
  • Female insert O-ring inlet and outlet connections
  • Meets or exceeds OEM specifications
  • OE-style fitment for select Hyundai Genesis and Hyundai Equus applications

Detailed Product Description

The Four Seasons 39458 expansion valve meters liquid refrigerant into the evaporator to help maintain proper system pressure and cooling performance. Its block-type design, aluminum body, and OE-style O-ring ports support accurate refrigerant control in factory-style HVAC layouts. This part number 39458 is listed for 2009-2014 Hyundai Genesis and 2011-2014 Hyundai Equus applications, making it a direct replacement choice for service work on those vehicles.

Cross-reference part numbers for the same application include UAC EX9778C and Global Parts Distributors LLC 3411594.

What This Part Helps Address

  • Weak or inconsistent cabin cooling
  • Improper refrigerant metering at the evaporator
  • Compressor cycling caused by flow control issues
  • HVAC performance loss in Hyundai Genesis and Hyundai Equus systems
  • Leaks or service issues at worn O-ring connection points

Installation Notes and Tips

Verify the vehicle’s refrigerant type before installation; this valve is specified for R134A systems. Confirm the inlet and outlet port style, thread diameter, and block-type layout against the original component before service. Replace and lubricate O-rings as needed during A/C repair, and evacuate and recharge the system according to factory procedures after installation.

Compatible With 2009-2014 Hyundai Genesis and 2011-2014 Hyundai Equus, this Four Seasons 39458 expansion valve is a technical replacement part for factory HVAC service.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, supporting OE-style service quality for select Hyundai A/C systems.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2014HyundaiEquusN/AExpansion Valve
2014HyundaiGenesisN/AExpansion Valve
2013HyundaiEquusN/AExpansion Valve
2013HyundaiGenesisN/AExpansion Valve
2012HyundaiEquusN/AExpansion Valve
2012HyundaiGenesisN/AExpansion Valve
2011HyundaiEquusN/AExpansion Valve
2011HyundaiGenesisN/AExpansion Valve
2010HyundaiGenesisN/AExpansion Valve
2009HyundaiGenesisN/AExpansion Valve
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 39458Global Parts Distributors LLC — 3411594UAC — EX9778C180386217458759458976263M000A17458T39458