Four Seasons 39668 A/C Expansion Valve

Four Seasons 39668 Expansion Valve

The Four Seasons 39668 expansion valve is a block-type A/C flow restrictor built for R134A systems. It is an aluminum, OE-style replacement that meets or exceeds OEM requirements and is specified for 1.5 ton applications with a -4.0 super heat setting.

Compatible With Mitsubishi Eclipse Cross, Outlander, Outlander PHEV, Outlander Sport, and ASX applications, this Four Seasons expansion valve 39668 is built for direct HVAC service where precise refrigerant metering is required.

Key Features

• Brand: Four Seasons Expansion Valve
• Part number: 39668
• Block-type A/C expansion valve
• Aluminum construction
• R134A refrigerant type
• Female O-ring inlet and outlet connections
• 2 mounting holes
• Meets or exceeds OEM specifications
• Style: w/o solenoid
• Super heat: -4.0
• Tonnage: 1.5

Product Details

The Four Seasons 39668 expansion valve regulates refrigerant flow into the evaporator to help maintain proper A/C system pressure and temperature control. Its block-style design, female O-ring fittings, and No. 10 suction / No. 6 liquid thread sizes support service replacement on Mitsubishi HVAC systems that use R134A refrigerant. This part cross-references UAC EX529498C for the same application.

Fits 2018-2020 Mitsubishi Eclipse Cross, N/A; Fits 2014-2020 Mitsubishi Outlander, N/A; Fits 2018-2020 Mitsubishi Outlander PHEV, N/A; Fits 2014-2020 Mitsubishi Outlander Sport, N/A; Fits 2014-2015 Mitsubishi ASX, N/A.

Common A/C Issues Addressed

• Erratic cabin cooling caused by improper refrigerant metering
• Low evaporator performance from a restricted or worn expansion valve
• High-side or low-side pressure imbalance in the A/C circuit
• Warm air output when the valve is no longer controlling flow correctly
• Service replacement for leaking or contaminated HVAC components

Installation Notes

Verify refrigerant type, fitting style, and thread sizes before installation. Replace O-rings as needed, evacuate and recharge the system to specification, and confirm proper super heat and vent temperature after service. This valve is a direct-fit style for the listed Mitsubishi applications, including Outlander and Outlander Sport models.

Quality Assurance

Four Seasons manufactures HVAC service parts to OE-style standards, and this 39668 expansion valve is listed as meeting or exceeding OEM requirements for the specified applications.