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Four Seasons 39003 A/C Expansion Valve - Front
| Brand | Four Seasons 39003 |
|---|---|
| Position | Front |
| Color | Aluminum |
| Description | Expansion Valves |
| Liquid Inlet Fitting Gender | Female |
| Liquid Inlet Fitting Thread Diameter | No. 8 |
| Liquid Inlet Size IN | 0.520 |
| Liquid Inlet Size MM | 13.2 |
| Liquid Inlet Style | FOR |
| 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 | FIO |
| Liquid Outlet Thread Type | 3/4" - 18 |
| Liquid Outlet Type | Insert O-Ring |
| Lqd Out Size IN | 0.540 |
| Lqd Out Size MM | 13.6 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mounting Hole Quantity | 2 |
| O-Ring A Number/Desc | [24615] / Green O-Ring |
| O-Ring B Number/Desc | [24608] / Green O-Ring |
| O-Ring C Number/Desc | [24610] / Green O-Ring |
| Refrigerant Type | R134A |
| Style | w/o Solenoid |
| Suc In Size IN | 0.650 |
| Suc In Size MM | 16.4 |
| Suc Out Size IN | 0.64 |
| Suc Out Size MM | 16.3 |
| Suction Inlet Fitting Gender | Female |
| Suction Inlet Fitting Thread Diameter | No. 10 |
| Suction Inlet Style | FIO |
| Suction Inlet Thread Type | 7/8" - 18 |
| Suction Inlet Type | Insert O-Ring |
| Suction Outlet Fitting Gender | Female |
| Suction Outlet Fitting Thread Diameter | No. 10 |
| Suction Outlet Style | FOR |
| Suction Outlet Thread Type | Not Threaded |
| Suction Outlet Type | O-Ring |
| Super Heat | -1.000 |
| Switch Included? | Not Included |
| Tonnage | 1.500 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Ford and Lincoln · 4 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable fit and function.
Aluminum construction. Lightweight material resists corrosion in demanding HVAC service.
Block type design. Provides precise refrigerant flow control for efficient A/C performance.
Cross-references Four Seasons 39003, Global Parts Distributors LLC 3411424 and Pioneer Automotive Industries 759003 for the same application. See all 18.
Four Seasons 39003 Expansion Valve Overview
Four Seasons 39003 is a block-type A/C expansion valve for R134A systems, built with an aluminum body and OE-style fitment details. It is specified for front HVAC service on 2003-2004 Ford Expedition and 2003-2004 Lincoln Navigator applications, including the 2004 models built to 12/01/03.
Key Features
- Four Seasons Expansion Valve line, part number 39003
- Block-type A/C expansion valve for R134A refrigerant
- Aluminum construction with aluminum finish
- Meets or exceeds OEM requirements
- Designed for 1.5 ton HVAC applications
- W/O solenoid style
- Front HVAC fitment for Ford Expedition and Lincoln Navigator
Product Details
This Four Seasons expansion valve meters refrigerant flow into the evaporator to help maintain proper A/C system operation. The 39003 uses female suction and liquid connections with OE-style O-ring interfaces, including insert O-ring and O-ring styles at the inlet and outlet points. It is engineered for R134A systems and matches the service needs of 2003-2004 Ford Expedition and 2003-2004 Lincoln Navigator front air conditioning layouts. This part cross-references UAC EX529459C for the same application.
What It Helps Address
- Inconsistent cabin cooling on front A/C systems
- Refrigerant flow restriction caused by a worn expansion valve
- Evaporator performance issues tied to incorrect metering
- Pressure imbalance in an R134A HVAC circuit
- Service replacement needs on 2003-2004 Ford Expedition and Lincoln Navigator front systems
Installation Notes
Verify the vehicle’s refrigerant type, connection style, and front HVAC configuration before installation. Replace any disturbed O-rings with the correct OE-style seals and inspect the surrounding A/C components for contamination or damage. For best results, evacuate and recharge the system according to factory service procedures after the valve is installed.
Quality Assurance
Four Seasons 39003 is listed as meeting or exceeding OEM requirements, giving technicians an OE-style replacement option for service work on Ford Expedition and Lincoln Navigator front A/C systems.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2004 | Ford | Expedition | Front | To 12/01/03; Expansion Valve |
| 2004 | Lincoln | Navigator | Front | To 12/01/03; Expansion Valve |
| 2003 | Ford | Expedition | Front | Expansion Valve |
| 2003 | Lincoln | Navigator | Front | Expansion Valve |
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