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Four Seasons 39431 A/C Expansion Valve - Rear
| Brand | Four Seasons 39431 |
|---|---|
| Position | Rear |
| 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 | Caputred O-Ring |
| Liquid Inlet Thread Type | Not Threaded |
| Liquid Inlet Type | O-Ring |
| Liquid Outlet Fitting Gender | Female |
| Liquid Outlet Fitting Thread Diameter | No. 8 |
| Liquid Outlet Style | Female Insert O-Ring |
| Liquid Outlet Thread Type | Not Threaded |
| Liquid Outlet Type | O-Ring |
| Lqd Out Size IN | 0.550 |
| Lqd Out Size MM | 14.000 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mounting Hole Quantity | 2 |
| O-Ring A Number/Desc | [24150] / Black O-Ring |
| O-Ring B Number/Desc | [24611] / Green O-Ring |
| O-Ring C Number/Desc | [24661] / Green O-Ring |
| O-Ring D Number/Desc | [24681] / Green O-Ring |
| Refrigerant Type | R134A |
| Style | w/o Solenoid |
| Suc In Size IN | 0.700 |
| Suc In Size MM | 17.8 |
| 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 | 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. 12 |
| Suction Outlet Style | Captured O-Ring |
| Suction Outlet Type | Not Threaded |
| Super Heat | -2.000 |
| Switch Included? | Not Included |
| Tonnage | 1.500 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Nissan · 7 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable A/C flow control.
Block type design. Aluminum construction with O-ring connections for a secure seal.
R134A compatible. Built for modern refrigerant systems without a solenoid.
Cross-references Four Seasons 39431, Global Parts Distributors LLC 3411924 and UAC EX9765C for the same application. See all 9.
Four Seasons 39431 Expansion Valve
Four Seasons 39431 is a block-type A/C expansion valve for R134A systems, built in aluminum for precise refrigerant metering in the HVAC circuit. It is a direct-fit style replacement for select Nissan Quest rear air conditioning applications and meets or exceeds OEM requirements.
Key Features
- Block-type A/C expansion valve for R134A refrigerant systems
- Aluminum construction with aluminum finish
- Female O-ring inlet and outlet connections
- 2 mounting holes for OE-style installation
- Includes captured and female insert O-ring connection styles as specified
- Meets or exceeds OEM specifications
- Super heat setting: -2.000
- Four Seasons 39431 cross-references UAC EX9765C for the same application
Product Details
This Four Seasons Expansion Valve line focuses on accurate refrigerant flow control for automotive A/C systems. Part number 39431 is a block-style expansion valve with No. 12 suction inlet and outlet fittings, No. 6 liquid inlet, and No. 8 liquid outlet sizing. It uses female O-ring connections and is specified without a solenoid or switch. For Nissan Quest rear HVAC service, Four Seasons 39431 supports proper refrigerant metering in the evaporator circuit and is listed for 2011-2012 Nissan Quest and 2013-2017 Nissan Quest rear expansion valve applications.
Common Problems It Addresses
- Weak or inconsistent rear A/C cooling
- Improper refrigerant flow through the evaporator
- Compressor cycling caused by expansion valve restriction
- Temperature imbalance in rear HVAC operation
- Leak-prone or worn O-ring connection points in the A/C circuit
Installation Notes and Tips
Verify the vehicle’s refrigerant type, connection sizes, and rear HVAC layout before installation. Replace and lubricate the O-rings as needed, and inspect the mating surfaces for corrosion or damage. After installation, evacuate and recharge the system according to factory service procedures to confirm correct operation. Fits 2011-2012 Nissan Quest, N/A. Fits 2013-2017 Nissan Quest, Rear.
Quality Assurance
Four Seasons 39431 is engineered as an OEM-style replacement and is listed as meeting or exceeding OEM specifications for the stated application. It is built for service use in Nissan Quest rear A/C systems and is identified by part number 39431 for accurate ordering and fitment verification.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2017 | Nissan | Quest | Rear | Expansion Valve |
| 2016 | Nissan | Quest | Rear | Expansion Valve |
| 2015 | Nissan | Quest | Rear | Expansion Valve |
| 2014 | Nissan | Quest | Rear | Expansion Valve |
| 2013 | Nissan | Quest | Rear | Expansion Valve |
| 2012 | Nissan | Quest | N/A | Expansion Valve |
| 2011 | Nissan | Quest | N/A | Expansion Valve |
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