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Four Seasons 39318 A/C Expansion Valve
| Brand | Four Seasons 39318 |
|---|---|
| Color | Aluminum |
| Description | Expansion Valves |
| Liquid Inlet Fitting Gender | Female |
| Liquid Inlet Fitting Thread Diameter | No. 6 |
| Liquid Inlet Size IN | 0.36 |
| Liquid Inlet Size MM | 9.2 |
| 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 | 0.650 |
| Lqd Out Size MM | 16.5 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mounting Hole Quantity | 2 |
| O-Ring A Number/Desc | [24610] / Green O-Ring |
| O-Ring B Number/Desc | [24616] / Green O-Ring |
| Refrigerant Type | R134A |
| Style | w/o Solenoid |
| Suc In Size IN | 0.650 |
| Suc In Size MM | 16.5 |
| Suc Out Size IN | 0.650 |
| Suc Out Size MM | 16.5 |
| Suction Inlet Fitting Gender | Female |
| Suction Inlet Fitting Thread Diameter | No. 10 |
| 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. 10 |
| 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 | 1.500 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Hyundai · 4 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable HVAC service.
Aluminum construction. Lightweight material helps resist corrosion in demanding conditions.
Block type design. Built for efficient refrigerant flow control in the A/C system.
Cross-references Four Seasons 39318, Global Parts Distributors LLC 3411381 and UAC EX10142C for the same application. See all 18.
Four Seasons 39318 Expansion Valve
The Four Seasons 39318 expansion valve is a block-type A/C flow restrictor built for R134A systems and engineered to meet or exceed OEM requirements. It is a direct-fit HVAC service part for restoring refrigerant control in the air conditioning system on select Hyundai Elantra models.
Key Features
- Four Seasons Expansion Valve, part number 39318
- Block-type A/C expansion valve for R134A refrigerant systems
- Aluminum construction with aluminum finish
- Fits 1.5 tonnage applications
- Female FIO insert O-ring inlet and outlet connections
- Mounting hole quantity: 2
- Meets or exceeds OEM specifications
- Style: w/o solenoid
Product Details
Four Seasons 39318 is an aluminum A/C expansion valve designed to regulate refrigerant flow into the evaporator and maintain proper superheat control. The block-style design uses female insert O-ring fittings with No. 6 liquid inlet and No. 10 liquid outlet sizing, along with No. 10 suction inlet and outlet connections. This part number 39318 is listed for 2001-2004 Hyundai Elantra applications and is a direct replacement choice when servicing the HVAC system on those vehicles.
This part cross-references UAC EX10142C for the same application.
What It Helps Fix
- Weak or inconsistent cabin cooling
- Refrigerant metering problems at the evaporator
- Incorrect superheat control in the A/C system
- HVAC performance loss caused by a worn or restricted expansion valve
- Service replacement needs on 2001-2004 Hyundai Elantra A/C systems
Installation Notes and Tips
Verify refrigerant type, line sizes, and fitting style before installation. This valve uses insert O-ring connections and is specified for R134A systems, so the sealing surfaces should be inspected carefully during service. Confirm the vehicle application by year and model before replacing the original valve on a Hyundai Elantra. Follow standard A/C service procedures, including proper evacuation and recharge, after installation.
Quality Assurance
Four Seasons lists this expansion valve as meeting or exceeding OEM specifications, making it a service-grade replacement for factory-style HVAC repair. The Four Seasons 39318 expansion valve is built for consistent fitment and refrigerant control in supported Hyundai Elantra applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2004 | Hyundai | Elantra | N/A | Expansion Valve |
| 2003 | Hyundai | Elantra | N/A | Expansion Valve |
| 2002 | Hyundai | Elantra | N/A | Expansion Valve |
| 2001 | Hyundai | Elantra | N/A | Expansion Valve |
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