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Four Seasons 39438 A/C Expansion Valve
| Brand | Four Seasons 39438 |
|---|---|
| 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 | Captured O-Ring |
| Liquid Outlet Thread Type | Not Threaded |
| Liquid Outlet Type | 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 | [24401] / Slim Line Sealing Washer |
| O-Ring B Number/Desc | [24661] / Green O-Ring |
| O-Ring C Number/Desc | [24681] / Green O-Ring |
| O-Ring D Number/Desc | [24404] / Slimline Washer |
| Refrigerant Type | R134A |
| Style | w/o Solenoid |
| Suc In Size IN | 0.72 |
| Suc In Size MM | 18.3 |
| 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 | Captured 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 | Sealing Washer |
| Suction Outlet Thread Type | Not Threaded |
| Suction Outlet Type | Sealing Washer |
| Super Heat | 4.5 |
| Switch Included? | Not Included |
| Tonnage | 1.500 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Ram · 16 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable fit and function.
Block type design. Aluminum construction with R134A refrigerant compatibility.
No solenoid. Simplified expansion valve setup for straightforward service.
Cross-references Four Seasons 39438, Global Parts Distributors LLC 3411528 and UAC EX9740C for the same application. See all 13.
Four Seasons 39438 Expansion Valve
Four Seasons 39438 is a block-type A/C expansion valve for R134A systems, built with an aluminum body and OE-style sealing interfaces. It is listed for Ram 1500, Ram 2500, and Ram 3500 applications and meets or exceeds OEM requirements for the specified fitments.
Key Features
- Block-type A/C expansion valve for R134A refrigerant systems
- Aluminum construction with aluminum finish
- Fits 2012 Ram 1500, 2012-2018 Ram 2500, and 2012-2018 Ram 3500
- OE-style liquid and suction connections with sealing washer and captured O-ring interfaces
- Super heat setting: 4.5
- Mounting hole quantity: 2
- Style: w/o solenoid
- Meets or exceeds OEM specifications for the listed applications
Product Details
This Four Seasons Expansion Valve line is focused on precise refrigerant flow control in automotive HVAC systems. Part number 39438 regulates refrigerant entering the evaporator, helping maintain proper cooling performance in Ram truck air conditioning systems. The valve uses female suction and liquid fittings with non-threaded connection styles, including No. 10 and No. 12 suction ports and No. 6 and No. 8 liquid ports, for OE-style serviceability.
For Ram 2500 and Ram 3500 HVAC repair work, Four Seasons 39438 provides a direct replacement option for the listed model years. This part cross-references UAC EX9740C for the same application.
Common Repair Uses
- Restores refrigerant metering when cabin air is not cooling properly
- Addresses uneven evaporator performance in the A/C system
- Helps correct compressor cycling concerns related to refrigerant flow control
- Supports repair of leaking or restricted expansion valve assemblies
- Serves as a replacement during Ram 1500, Ram 2500, or Ram 3500 HVAC service
Installation Notes
- Verify the vehicle uses an R134A system before installation.
- Match the suction and liquid port sizes and sealing styles to the original valve.
- Inspect mating surfaces, O-rings, and sealing washers before assembly.
- Recover refrigerant and evacuate the system according to proper A/C service procedures.
- Confirm correct refrigerant charge and system operation after installation.
Quality Assurance
Four Seasons 39438 is built to meet or exceed OEM requirements for the listed fitments and is designed for direct replacement use in factory-style HVAC service.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2018 | Ram | 2500 | — | — | N/A | Expansion Valve |
| 2018 | Ram | 3500 | — | — | N/A | Expansion Valve |
| 2017 | Ram | 2500 | — | — | N/A | Expansion Valve |
| 2017 | Ram | 3500 | — | — | N/A | Expansion Valve |
| 2016 | Ram | 2500 | — | — | N/A | Expansion Valve |
| 2016 | Ram | 3500 | — | — | N/A | Expansion Valve |
| 2015 | Ram | 2500 | — | — | N/A | Expansion Valve |
| 2015 | Ram | 3500 | — | — | N/A | Expansion Valve |
| 2014 | Ram | 2500 | — | — | N/A | Expansion Valve |
| 2014 | Ram | 3500 | — | — | N/A | Expansion Valve |
| 2013 | Ram | 2500 | — | — | N/A | Expansion Valve |
| 2013 | Ram | 3500 | — | — | N/A | Expansion Valve |
| 2012 | Ram | 1500 | — | — | N/A | Expansion Valve |
| 2012 | Ram | 2500 | 5.7L | V8 | N/A | Expansion Valve |
| 2012 | Ram | 2500 | 6.7L | L6 | N/A | Expansion Valve |
| 2012 | Ram | 3500 | — | — | N/A | Expansion Valve |
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