Four Seasons 39290 A/C Expansion Valve

Four Seasons 39290 Expansion Valve for Mitsubishi A/C

The Four Seasons 39290 expansion valve is a block-type A/C flow restrictor built for R134A systems and engineered for Mitsubishi HVAC service. It is a direct-fit style replacement for select Mitsubishi Lancer, ASX, Outlander, and Outlander Sport applications, with OE-level dimensional and connection details.

Key Features

• Brand: Four Seasons Expansion Valve, part number 39290
• Block type A/C expansion valve for R134A refrigerant systems
• Aluminum construction with aluminum finish
• Mounting hole quantity: 2
• Female FIO insert O-ring connections on liquid and suction sides
• Super heat setting: 3.000
• Style: w/o solenoid
• Meets or exceeds OEM requirements
• Fits Mitsubishi Lancer, Mitsubishi ASX, Mitsubishi Outlander, and Mitsubishi Outlander Sport applications

Product Details

Four Seasons 39290 is an A/C expansion valve designed to regulate refrigerant flow through the evaporator circuit in Mitsubishi climate control systems. The aluminum block-style body uses female insert O-ring fittings for the suction and liquid connections, with No. 10 suction inlet and outlet thread diameters and No. 6 liquid inlet / No. 8 liquid outlet thread diameters. This part number 39290 is listed for 2007-2017 Mitsubishi Lancer, 2013 Mitsubishi ASX, 2007-2013 Mitsubishi Outlander, and 2011-2013 Mitsubishi Outlander Sport. This part cross-references UAC EX10315C for the same application.

What It Helps Address

• Irregular evaporator refrigerant metering
• Weak or inconsistent cabin cooling
• Incorrect superheat control in the A/C circuit
• Restriction-related performance loss in the expansion valve circuit
• Service replacement for worn Mitsubishi HVAC flow control components

Installation Notes and Tips

Verify refrigerant type, connection style, and mounting points before installation. This valve uses female insert O-ring fittings and a two-hole mounting pattern, so the replacement should match the original HVAC layout on the vehicle. Replace seals as required during A/C service and evacuate and recharge the system according to factory procedures after installation. Confirm the vehicle application by year, make, and model before ordering; part number 39290 is listed for Mitsubishi Lancer, ASX, Outlander, and Outlander Sport coverage.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, making it a technical replacement option for Mitsubishi A/C repair work. The Four Seasons 39290 is built for R134A systems and specified for direct application matching on the listed vehicles.