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Four Seasons 39151 A/C Expansion Valve - Front
| Brand | Four Seasons 39151 |
|---|---|
| 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 | Sealing Washer |
| Liquid Outlet Thread Type | Not Threaded |
| Liquid Outlet Type | Sealing Washer |
| Lqd Out Size IN | 0.46 |
| Lqd Out Size MM | 11.8 |
| 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 | [24402] / Slimline Washer |
| O-Ring C Number/Desc | [24404] / Slimline Washer |
| Refrigerant Type | R134A |
| Style | w/o Solenoid |
| Suc In Size IN | 0.700 |
| Suc In Size MM | 17.7 |
| Suc Out Size IN | 0.700 |
| Suc Out Size MM | 17.7 |
| Suction Inlet Fitting Gender | Female |
| Suction Inlet Fitting Thread Diameter | No. 12 |
| Suction Inlet Style | Sealing Washer |
| Suction Inlet Thread Type | Not Threaded |
| Suction Inlet Type | Sealing Washer |
| 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 | 8.500 |
| Switch Included? | Not Included |
| Tonnage | 1.000 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Chevrolet, Buick, Saturn, and Pontiac · 13 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable A/C flow control.
Aluminum construction. Lightweight material helps resist corrosion in the A/C system.
Block type design. Built for precise refrigerant metering without a solenoid.
Cross-references Four Seasons 39151, Global Parts Distributors LLC 3411810 and Pioneer Automotive Industries 759151 for the same application. See all 18.
Four Seasons 39151 Expansion Valve Overview
Four Seasons 39151 is a block-type A/C expansion valve for R134A systems. It is built from aluminum and meets or exceeds OEM requirements for direct replacement service on select GM minivans, including Chevrolet Uplander, Buick Terraza, Saturn Relay, and Pontiac Montana front HVAC applications.
Use Four Seasons 39151 when servicing the front air conditioning circuit and restoring proper refrigerant metering in the evaporator system. This expansion valve is identified by part number 39151 and is part of the Four Seasons Expansion Valve line.
Key Features
- Block-type A/C expansion valve for R134A refrigerant systems
- Aluminum construction with aluminum finish
- Front HVAC application with 2 mounting holes
- Female suction and liquid fittings with sealing washer connections
- Meets or exceeds OEM specifications
- Superheat setting: 8.5
- Style: w/o solenoid
- Compatible with 2005-2009 Chevrolet Uplander, front
- Compatible with 2005-2007 Buick Terraza, front
- Compatible with 2005-2007 Saturn Relay, front
- Compatible with 2005-2006 Pontiac Montana, front
Product Details
Four Seasons 39151 is engineered as an A/C flow restrictor for vehicles using R134A refrigerant. The block-style design uses female suction and liquid ports with sealing washer interfaces, along with No. 12 suction inlet and outlet thread diameters and No. 6 liquid inlet with No. 8 liquid outlet thread diameters. Its aluminum construction supports reliable service in the front HVAC system, and the OEM-level specification makes it a direct-fit service part for the listed applications. If you are replacing a worn or restricted expansion valve on a Chevrolet Uplander, Buick Terraza, Saturn Relay, or Pontiac Montana, Four Seasons 39151 is the correct part number to verify against the vehicle’s original configuration.
This part cross-references UAC EX10208C for the same application.
Common Repair Symptoms
- Front A/C vents blowing warm air or inconsistent air temperature
- Refrigerant flow restriction causing poor evaporator performance
- Erratic cabin cooling on Chevrolet Uplander, Buick Terraza, Saturn Relay, or Pontiac Montana models
- Improper superheat control in the front HVAC circuit
- Service replacement for a leaking or sticking expansion valve
Installation Notes
Verify refrigerant type, port style, and vehicle fitment before installation. This valve uses sealing washer-style connections and is specified without a solenoid, so the original system layout should be matched during service. Confirm the front HVAC location and compare the original part number 39151 before reassembly. Proper evacuation, leak checking, and recharge procedures should be followed after replacement.
Quality Assurance
Four Seasons 39151 is built to meet or exceed OEM requirements for the listed applications. The Four Seasons Expansion Valve line is used for service replacement in automotive A/C systems where accurate refrigerant metering and fitment consistency are required.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2009 | Chevrolet | Uplander | — | — | Front | Expansion Valve |
| 2008 | Chevrolet | Uplander | — | — | Front | Expansion Valve |
| 2007 | Buick | Terraza | — | — | Front | Expansion Valve |
| 2007 | Chevrolet | Uplander | — | — | Front | Expansion Valve |
| 2007 | Saturn | Relay | — | — | Front | Expansion Valve |
| 2006 | Buick | Terraza | — | — | Front | Expansion Valve |
| 2006 | Chevrolet | Uplander | — | — | Front | Expansion Valve |
| 2006 | Pontiac | Montana | — | — | Front | Expansion Valve |
| 2006 | Saturn | Relay | — | — | Front | Expansion Valve |
| 2005 | Buick | Terraza | — | — | Front | Expansion Valve |
| 2005 | Chevrolet | Uplander | — | — | Front | Expansion Valve |
| 2005 | Pontiac | Montana | 3.5L | V6 | Front | Expansion Valve |
| 2005 | Saturn | Relay | — | — | Front | Expansion Valve |
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