Four Seasons 39601 A/C Expansion Valve - Front
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Four Seasons
 Expansion Valve

Four Seasons 39601 A/C Expansion Valve - Front

Brand Four Seasons 39601
Position Front
Material Aluminum
Refrigerant Type R134a
Type Block type
Mounting Hole Quantity 2
Suction Inlet Fitting Gender Female
Suction Outlet Fitting Gender Female
Suction Inlet Fitting Thread Diameter No. 10
Suction Outlet Fitting Thread Diameter No. 12
Suction Inlet Thread Type Not threaded
Suction Outlet Thread Type Not threaded
Liquid Inlet Fitting Gender Female
Liquid Outlet Fitting Gender Female
Liquid Inlet Fitting Thread Diameter No. 6
Liquid Outlet Fitting Thread Diameter No. 8
Liquid Inlet Thread Type Not threaded
Liquid Outlet Thread Type Not threaded
Description Expansion valves
Liquid Inlet Style Sealing washer
Liquid Inlet Type Sealing washer
Liquid Outlet Style Sealing washer
Liquid Outlet Type Sealing washer
Meets / Exceeds OEM? Yes
Style W/o solenoid
Suction Inlet Style Sealing washer
Suction Inlet Type Sealing washer
Suction Outlet Style Sealing washer
Suction Outlet Type Sealing washer
Super Heat -2.0
Switch Included? Not included
Tonnage 1
Product line Expansion Valve
Fits Cadillac, Chevrolet, and GMC · 48 vehicles

OE direct replacement. Meets or exceeds OEM requirements for dependable A/C flow control.

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

R134A compatible. Built for modern refrigerant systems with no solenoid included.

Cross-references Four Seasons 39601, Global Parts Distributors LLC 3411934 and UAC EX529516C for the same application. See all 9.

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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 Expansion Valve options

Four Seasons 39601 Expansion Valve

Four Seasons 39601 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 supported Cadillac, Chevrolet, and GMC applications.

Key Features

  • Block-type A/C expansion valve for R134A refrigerant systems
  • Aluminum construction for HVAC service applications
  • Meets or exceeds OEM specifications
  • Female sealing-washer connections on liquid and suction sides
  • Mounting hole quantity: 2
  • Style: w/o solenoid
  • Super heat setting: -2.0
  • Tonnage: 1

Product Details

The Four Seasons Expansion Valve line focuses on precise refrigerant metering for automotive air conditioning systems. Part number 39601 uses a block-style design with female inlet and outlet fittings, including No. 6 and No. 8 liquid connections and No. 10 and No. 12 suction connections. This configuration supports proper refrigerant control in front HVAC service locations on 2017-2020 Cadillac Escalade and Escalade ESV, 2017-2020 Chevrolet Tahoe, and 2017-2020 GMC Yukon and Yukon XL, along with select Silverado, Sierra, and Suburban 3500 HD applications. This part cross-references UAC EX529516C for the same application.

What It Helps Address

  • Weak or inconsistent cabin cooling
  • Improper refrigerant metering at the evaporator
  • Front A/C performance issues in Cadillac Escalade and Chevrolet Tahoe applications
  • HVAC service needs on Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD platforms
  • Expansion valve replacement during A/C system repair

Installation Notes and Tips

Verify refrigerant type, fitting sizes, and mounting-hole layout before installation. This valve is specified for R134A systems and uses sealing-washer style connections rather than threaded ports. Confirm the vehicle’s HVAC layout and service location, especially on front-position applications such as 2017-2020 Cadillac Escalade, 2017-2020 Chevrolet Tahoe, and 2017-2020 GMC Yukon models. Replace related seals and evacuate and recharge the system according to factory service procedures.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, making it a direct-fit service part for the confirmed applications. Part number 39601 is built for automotive HVAC repair where accurate refrigerant flow control is required.

Related reading

This part fits 48 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2020CadillacEscaladeFrontExpansion Valve
2020CadillacEscalade ESVFrontExpansion Valve
2020ChevroletTahoeFrontExpansion Valve
2020GMCYukonFrontExpansion Valve
2020GMCYukon XLFrontExpansion Valve
2019CadillacEscaladeFrontExpansion Valve
2019CadillacEscalade ESVFrontExpansion Valve
2019ChevroletSilverado 1500 LDN/AExpansion Valve
2019ChevroletSilverado 2500 HDN/AExpansion Valve
2019ChevroletSilverado 3500 HDN/AExpansion Valve
2019ChevroletSuburban 3500 HDFrontExpansion Valve
2019ChevroletTahoeFrontExpansion Valve
2019GMCSierra 2500 HDN/AExpansion Valve
2019GMCSierra 3500 HDN/AExpansion Valve
2019GMCYukonFrontExpansion Valve
2019GMCYukon XLFrontExpansion Valve
2018CadillacEscaladeFrontExpansion Valve
2018CadillacEscalade ESVFrontExpansion Valve
2018ChevroletCheyenneN/AExpansion Valve
2018ChevroletSilverado 1500N/AExpansion Valve
2018ChevroletSilverado 2500N/AExpansion Valve
2018ChevroletSilverado 2500 HDN/AExpansion Valve
2018ChevroletSilverado 3500N/AExpansion Valve
2018ChevroletSilverado 3500 HDN/AExpansion Valve
2018ChevroletSuburban 3500 HDFrontExpansion Valve
2018ChevroletTahoeFrontExpansion Valve
2018GMCSierraN/AExpansion Valve
2018GMCSierra 1500N/AExpansion Valve
2018GMCSierra 2500 HDN/AExpansion Valve
2018GMCSierra 3500 HDN/AExpansion Valve
2018GMCYukonFrontExpansion Valve
2018GMCYukon XLFrontExpansion Valve
2017CadillacEscaladeFrontExpansion Valve
2017CadillacEscalade ESVFrontExpansion Valve
2017ChevroletCheyenneN/AExpansion Valve
2017ChevroletSilverado 1500N/AExpansion Valve
2017ChevroletSilverado 2500N/AExpansion Valve
2017ChevroletSilverado 2500 HDN/AExpansion Valve
2017ChevroletSilverado 3500N/AExpansion Valve
2017ChevroletSilverado 3500 HDN/AExpansion Valve
2017ChevroletSuburban 3500 HDFrontExpansion Valve
2017ChevroletTahoeFrontExpansion Valve
2017GMCSierraN/AExpansion Valve
2017GMCSierra 1500N/AExpansion Valve
2017GMCSierra 2500 HDN/AExpansion Valve
2017GMCSierra 3500 HDN/AExpansion Valve
2017GMCYukonFrontExpansion Valve
2017GMCYukon XLFrontExpansion 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 — 39601Global Parts Distributors LLC — 3411934UAC — EX529516C21761675980115513698410435584104356A99478