/live/media/FS/FS_39018_Fro.jpg)
Four Seasons 39018 A/C Expansion Valve - Front
| Brand | Four Seasons 39018 |
|---|---|
| Position | Front |
| 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 | FIO |
| Liquid Outlet Thread Type | Not Threaded |
| 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 | [24401] / Slim Line Sealing Washer |
| O-Ring B Number/Desc | [24404] / Slimline Washer |
| O-Ring C Number/Desc | [24668] / Green O-Ring |
| O-Ring D Number/Desc | [24670] / 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 | 0.700 |
| Suc Out Size MM | 17.7 |
| 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. 12 |
| Suction Outlet Style | Sealing Washer |
| Suction Outlet Thread Type | Not Threaded |
| Suction Outlet Type | Sealing Washer |
| Super Heat | 4.000 |
| Switch Included? | Not Included |
| Tonnage | 1.500 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Jeep · 11 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable system service.
Aluminum block type. Lightweight construction with a compact, efficient design.
R134A compatible. Built for use with common modern refrigerant systems.
Cross-references Four Seasons 39018, Global Parts Distributors LLC 3411787 and Pioneer Automotive Industries 759018 for the same application. See all 19.
Four Seasons 39018 Expansion Valve Overview
Four Seasons 39018 is a block-type A/C expansion valve for R134A systems, built in aluminum for controlled refrigerant metering in the HVAC circuit. It is an OE-style replacement that meets or exceeds OEM requirements and is listed for Jeep Commander and Jeep Grand Cherokee applications.
Key Features
- Part number 39018 from Four Seasons Expansion Valve line
- Block-type A/C expansion valve for R134A refrigerant
- Aluminum construction with aluminum finish
- Super heat setting: 4.000
- Mounting hole quantity: 2
- Style: w/o solenoid
- Meets or exceeds OEM specifications
- Fits Jeep Commander and Jeep Grand Cherokee HVAC applications
Product Details
Four Seasons 39018 regulates refrigerant flow into the evaporator to support proper A/C system operation. The valve uses female suction and liquid connections with sealing-washer and insert O-ring interfaces, including No. 10 and No. 12 suction thread diameters and No. 6 and No. 8 liquid thread diameters. This part cross-references UAC EX10219C for the same application. Fits 2006-2010 Jeep Commander, Front, Expansion Valve. Fits 2005-2010 Jeep Grand Cherokee, N/A, Expansion Valve.
Common Problems This Part Addresses
- Weak or inconsistent cabin cooling
- Incorrect refrigerant metering at the evaporator
- A/C performance loss caused by a worn expansion valve
- System pressure imbalance in R134A HVAC systems
- Fitment issues when replacing the original Jeep Commander or Jeep Grand Cherokee valve
Installation Notes and Tips
Verify the vehicle’s refrigerant type, connection style, and mounting layout before installation. Replace any disturbed sealing surfaces and confirm the suction and liquid line orientations match the original valve. After installation, evacuate and recharge the system according to factory service procedures, then check for leaks and confirm proper vent temperature.
Quality Assurance
Four Seasons 39018 is built as an OE-style replacement and is specified to meet or exceed OEM requirements for the listed Jeep Commander and Jeep Grand Cherokee applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2010 | Jeep | Commander | Front | Expansion Valve |
| 2010 | Jeep | Grand Cherokee | N/A | Expansion Valve |
| 2009 | Jeep | Commander | Front | Expansion Valve |
| 2009 | Jeep | Grand Cherokee | N/A | Expansion Valve |
| 2008 | Jeep | Commander | Front | Expansion Valve |
| 2008 | Jeep | Grand Cherokee | N/A | Expansion Valve |
| 2007 | Jeep | Commander | Front | Expansion Valve |
| 2007 | Jeep | Grand Cherokee | N/A | Expansion Valve |
| 2006 | Jeep | Commander | Front | Expansion Valve |
| 2006 | Jeep | Grand Cherokee | N/A | Expansion Valve |
| 2005 | Jeep | Grand Cherokee | N/A | Expansion Valve |
| No rows match your filter. | ||||