Four Seasons 39311 A/C Expansion Valve - Front
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Four Seasons
 Expansion Valve

Four Seasons 39311 A/C Expansion Valve - Front

Brand Four Seasons 39311
Position Front
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 FIO
Liquid Inlet Thread Type Not Threaded
Liquid Inlet Type Insert O-Ring
Liquid Outlet Fitting Gender Female
Liquid Outlet Fitting Thread Diameter No. 10
Liquid Outlet Style FIO
Liquid Outlet Thread Type Not Threaded
Liquid Outlet Type Insert O-Ring
Lqd Out Size IN 0.61
Lqd Out Size MM 15.5
Material Aluminum
Meets / Exceeds OEM? Yes
Mounting Hole Quantity 2
O-Ring A Number/Desc [24610] / Green O-Ring
O-Ring B Number/Desc [24606] / Green O-Ring
O-Ring C Number/Desc [24612] / Green O-Ring
Refrigerant Type R134A
Style w/o Solenoid
Suc In Size IN 0.73
Suc In Size MM 18.3
Suc Out Size IN 0.72
Suc Out Size MM 18.3
Suction Inlet Fitting Gender Female
Suction Inlet Fitting Thread Diameter No. 12
Suction Inlet Style FIO
Suction Inlet Thread Type Not Threaded
Suction Inlet Type Insert O-Ring
Suction Outlet Fitting Gender Female
Suction Outlet Fitting Thread Diameter No. 12
Suction Outlet Style FIO
Suction Outlet Thread Type Not Threaded
Suction Outlet Type Insert O-Ring
Super Heat -3.500
Switch Included? Not Included
Tonnage 1.000
Type Block Type
Product line Expansion Valve
Fits Subaru · 8 vehicles

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

Aluminum construction. Lightweight material resists corrosion in demanding HVAC service.

Block type design. Provides precise refrigerant metering without a solenoid.

Cross-references Dynomax 39311, Global Parts Distributors LLC 3411455 and 73531XA00A for the same application. See all 12.

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Front A/C Expansion Valve for Subaru Tribeca

Restore refrigerant control in the front HVAC circuit with this Four Seasons Expansion Valve, part number 39311. This block-type A/C expansion valve is built for R134A systems and is listed for the 2007 Subaru B9 Tribeca and 2008-2014 Subaru Tribeca front applications.

Key Features

  • Four Seasons Expansion Valve, part number 39311
  • Block-type A/C expansion valve for R134A refrigerant systems
  • Aluminum construction with aluminum finish
  • Front HVAC application for Subaru Tribeca and Subaru B9 Tribeca
  • Female FIO insert O-ring liquid and suction connections
  • Meets or exceeds OEM requirements
  • Style: w/o solenoid
  • Super heat specification: -3.500
  • Compatible with 1.0 ton applications

Product Details

Four Seasons 39311 is an aluminum A/C expansion valve designed to meter refrigerant flow through the evaporator in R134A air conditioning systems. The block-style body uses female insert O-ring fittings on both the suction and liquid sides, with No. 12 suction inlet and outlet thread diameters and No. 6 liquid inlet with No. 10 liquid outlet thread diameters. This configuration supports front HVAC service on the Subaru Tribeca platform, including the 2007 Subaru B9 Tribeca and 2008-2014 Subaru Tribeca.

This part cross-references Global Parts Distributors LLC 3411455 for the same application.

Common Repair Symptoms

  • Warm air from the front vents when the A/C is switched on
  • Erratic evaporator cooling or uneven cabin temperature
  • Restricted refrigerant flow through the HVAC system
  • Compressor cycling caused by improper metering at the expansion valve
  • Loss of cooling performance in Subaru Tribeca front A/C service

Installation Notes

Verify the vehicle’s refrigerant type before installation; this valve is specified for R134A systems. Confirm the front application, mounting points, and fitting style against the removed component before assembly. Inspect the sealing surfaces and replace the O-rings as needed during service to help maintain a proper seal. After installation, evacuate and recharge the system according to OEM 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 specified Subaru Tribeca front applications. Part number 39311 is built for consistent refrigerant metering in the intended HVAC configuration.

Related reading

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2014SubaruTribecaFrontExpansion Valve
2013SubaruTribecaFrontExpansion Valve
2012SubaruTribecaFrontExpansion Valve
2011SubaruTribecaFrontExpansion Valve
2010SubaruTribecaFrontExpansion Valve
2009SubaruTribecaFrontExpansion Valve
2008SubaruTribecaFrontExpansion Valve
2007SubaruB9 TribecaFrontExpansion Valve
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dynomax — 39311Global Parts Distributors LLC — 341145573531XA00A73531XA02A217311759596807269313126511139311A17311CWK759596T39311