Four Seasons 39181 A/C Expansion Valve - Rear

Four Seasons 39181 Expansion Valve

Four Seasons 39181 is a block-type A/C expansion valve for R134A systems, built with an aluminum body and OE-style FIO insert O-ring connections. It is specified for rear HVAC service on select Jeep, Chrysler, and Dodge models, including the Jeep Commander, Chrysler Town & Country, Dodge Caravan, and Dodge Grand Caravan.

Key Features

• Brand: Four Seasons Expansion Valve
• Part number: 39181
• Block type A/C expansion valve for R134A refrigerant
• Aluminum construction with aluminum finish
• Rear HVAC application
• FIO insert O-ring liquid and suction connections
• Meets or exceeds OEM requirements
• Super heat setting: 4.000
• Style: w/o solenoid
• Compatible with 2006-2010 Jeep Commander rear A/C service
• Compatible with 2006-2007 Chrysler Town & Country rear A/C service
• Compatible with 2006-2007 Dodge Caravan rear A/C service
• Compatible with 2006-2007 Dodge Grand Caravan rear A/C service

Product Details

Four Seasons 39181 is part of the Expansion Valve line and is built for precise refrigerant metering in rear air conditioning circuits. The block-style design uses female suction and liquid fittings with insert O-ring interfaces, helping maintain a secure seal at the evaporator connection points. This part number 39181 is a direct-fit service option for rear HVAC repair on the Jeep Commander, Chrysler Town & Country, Dodge Caravan, and Dodge Grand Caravan listed in the fitment data.

This part cross-references UAC EX10206C for the same application.

Common Repair Symptoms

• Rear A/C vents blowing warm air
• Erratic cabin cooling from the rear evaporator circuit
• Refrigerant flow restriction at the expansion valve
• Improper superheat control in the rear HVAC system
• Leak-related service at the valve-to-line connection points

Installation Notes

• Verify the vehicle uses R134A refrigerant before service.
• Confirm rear HVAC routing and fitting sizes before installation.
• Replace and lubricate O-rings as needed during A/C line service.
• Inspect the evaporator, lines, and seals for contamination or damage before reassembly.
• Evacuate and recharge the system according to factory service procedures after installation.

Quality Assurance

Four Seasons 39181 is listed as meeting or exceeding OEM requirements and is engineered for rear A/C service in the specified Jeep, Chrysler, and Dodge applications. The Four Seasons Expansion Valve line is built for service replacement where accurate refrigerant control and proper sealing are required.