Four Seasons 39512 A/C Expansion Valve - Rear
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Four Seasons
 Expansion Valve

Four Seasons 39512 A/C Expansion Valve - Rear

Brand Four Seasons 39512
Position Rear
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
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 4.0
Switch Included? Not Included
Tonnage 1
Type Block Type
Product line Expansion Valve
Fits Chevrolet, GMC, Buick, and Cadillac · 55 vehicles

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

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

Block type valve. Built for precise refrigerant metering without a solenoid.

Cross-references Four Seasons 39512, Global Parts Distributors LLC 3411581 and UAC EX10407C for the same application. See all 12.

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

Four Seasons 39512 Rear A/C Expansion Valve

Four Seasons 39512 is a block-type A/C expansion valve for rear HVAC systems that use R134A refrigerant. Built from aluminum and engineered to meet or exceed OEM requirements, it regulates refrigerant flow for rear cooling performance in select Buick, Cadillac, Chevrolet, and GMC applications.

This Four Seasons Expansion Valve line focuses on precise refrigerant metering for service repairs where stable evaporator feed and correct superheat matter. Part number 39512 is a direct-fit style replacement for rear HVAC service on vehicles such as the Buick Enclave, Cadillac XT6, Chevrolet Traverse, Chevrolet Tahoe, GMC Acadia, and GMC Yukon.

Key Features

  • Brand: Four Seasons Expansion Valve
  • Part number: 39512
  • Block type A/C expansion valve
  • For R134A refrigerant systems
  • Aluminum construction and aluminum finish
  • Rear HVAC application
  • Female suction and liquid fittings with sealing washer style connections
  • Mounting hole quantity: 2
  • Super heat setting: 4.0
  • Meets or exceeds OEM requirements
  • Style: w/o solenoid

Product Details

The Four Seasons 39512 expansion valve meters liquid refrigerant into the rear evaporator circuit, helping maintain proper pressure drop and refrigerant control in the HVAC system. It uses female inlet and outlet connections with sealing washer interfaces, including suction inlet and outlet sizes of 0.63 in (16 mm) and 0.700 in (17.7 mm), plus liquid inlet and outlet sizes of 0.34 in (8.6 mm) and 0.46 in (11.8 mm). This part cross-references UAC EX10407C and Global Parts Distributors LLC 3411581 for the same application.

Vehicle Fitment

  • Fits 2016-2024 Buick Enclave, rear
  • Fits 2013-2014 Buick Enclave, rear
  • Fits 2020-2024 Cadillac XT6, rear
  • Fits 2024 Chevrolet Traverse Limited, rear
  • Fits 2013-2023 GMC Acadia, rear
  • Fits 2013-2021 Chevrolet Traverse, rear
  • Fits 2015-2020 Cadillac Escalade, rear
  • Fits 2015-2020 Chevrolet Tahoe, rear
  • Fits 2015-2020 GMC Yukon, rear

What It Helps Fix

  • Rear A/C blowing warm air due to incorrect refrigerant metering
  • Uneven rear cabin cooling performance
  • Restricted or inconsistent refrigerant flow at the rear evaporator
  • HVAC service repairs involving a failed expansion valve
  • Rear system performance issues on R134A-equipped vehicles

Installation Notes

Verify refrigerant type, fitting style, and rear HVAC configuration before installation. This valve uses sealing washer connections and a block-type layout with two mounting holes, so the replacement should match the original system design on the vehicle. Confirm the part number 39512 against the removed component and service information for the specific Buick Enclave, Cadillac XT6, Chevrolet Traverse, Chevrolet Tahoe, GMC Acadia, or GMC Yukon application.

Quality Assurance

Four Seasons 39512 is built to meet or exceed OEM specifications for the listed rear HVAC applications. The aluminum construction and OE-style fitment support consistent service replacement in R134A air conditioning systems.

Related reading

This part fits 55 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2024BuickEnclaveRearExpansion Valve
2024CadillacXT6RearExpansion Valve
2024ChevroletTraverse LimitedRearExpansion Valve
2023BuickEnclaveRearExpansion Valve
2023CadillacXT6RearExpansion Valve
2023GMCAcadiaRearExpansion Valve
2022BuickEnclaveRearExpansion Valve
2022CadillacXT6RearExpansion Valve
2022GMCAcadiaRearExpansion Valve
2021BuickEnclaveRearExpansion Valve
2021CadillacXT6RearExpansion Valve
2021ChevroletTraverseRearExpansion Valve
2021GMCAcadiaRearExpansion Valve
2020BuickEnclaveRearExpansion Valve
2020CadillacEscaladeRearExpansion Valve
2020CadillacXT6RearExpansion Valve
2020ChevroletTahoeRearExpansion Valve
2020ChevroletTraverseRearExpansion Valve
2020GMCAcadiaRearExpansion Valve
2020GMCYukonRearExpansion Valve
2019BuickEnclaveRearExpansion Valve
2019CadillacEscaladeRearExpansion Valve
2019ChevroletTahoeRearExpansion Valve
2019ChevroletTraverseRearExpansion Valve
2019GMCAcadiaRearExpansion Valve
2019GMCYukonRearExpansion Valve
2018BuickEnclaveRearExpansion Valve
2018CadillacEscaladeRearExpansion Valve
2018ChevroletTahoeRearExpansion Valve
2018ChevroletTraverseRearExpansion Valve
2018GMCAcadiaRearExpansion Valve
2018GMCYukonRearExpansion Valve
2017BuickEnclaveRearExpansion Valve
2017CadillacEscaladeRearExpansion Valve
2017ChevroletTahoeRearExpansion Valve
2017ChevroletTraverseRearExpansion Valve
2017GMCAcadiaRearExpansion Valve
2017GMCYukonRearExpansion Valve
2016BuickEnclaveRearExpansion Valve
2016CadillacEscaladeRearExpansion Valve
2016ChevroletTahoeRearExpansion Valve
2016ChevroletTraverseRearExpansion Valve
2016GMCAcadiaRearExpansion Valve
2016GMCYukonRearExpansion Valve
2015CadillacEscaladeRearExpansion Valve
2015ChevroletTahoeRearExpansion Valve
2015ChevroletTraverseRearExpansion Valve
2015GMCAcadiaRearExpansion Valve
2015GMCYukonRearExpansion Valve
2014BuickEnclaveRearExpansion Valve
2014ChevroletTraverseRearExpansion Valve
2014GMCAcadiaRearExpansion Valve
2013BuickEnclaveRearExpansion Valve
2013ChevroletTraverseRearExpansion Valve
2013GMCAcadiaRearExpansion 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 — 39512Global Parts Distributors LLC — 3411581UAC — EX10407C1804682175127597221551317313136622816195A17512EX10407T39512