Four Seasons 39379 A/C Expansion Valve

Four Seasons 39379 Expansion Valve Overview

Four Seasons 39379 is a block-type A/C expansion valve for R134A systems. It is built from aluminum and uses a w/o solenoid design with a 4.000 super heat setting for controlled refrigerant flow in the HVAC system.

Compatible with select Hyundai Elantra and Kia Forte applications, this Four Seasons Expansion Valve line is focused on OE-style service replacement for vehicles that use a block-style valve assembly. Part number 39379 is listed as meeting or exceeding OEM requirements.

Key Features

• Block-type A/C expansion valve for R134A refrigerant systems
• Aluminum construction with aluminum finish
• Style: w/o solenoid
• Mounting hole quantity: 2
• Liquid inlet style: FIO insert O-ring, No. 6 female fitting
• Liquid outlet style: FIO insert O-ring, No. 10 female fitting
• Suction inlet and outlet: FIO insert O-ring, No. 10 female fittings
• Super heat setting: 4.000
• Meets or exceeds OEM specifications

Detailed Description

The Four Seasons Expansion Valve brand line is built for HVAC service work where accurate refrigerant metering matters. This block-type valve regulates refrigerant flow into the evaporator, helping maintain proper system balance in R134A-equipped air conditioning systems. Four Seasons 39379 is an OE-style replacement for applications that call for a block valve with female insert O-ring connections and a two-hole mounting pattern.

Fitment includes 2009-2010 Hyundai Elantra, 2011-2013 Hyundai Elantra, 2013 Hyundai Elantra Coupe, 2013 Hyundai Elantra GT, and 2014-2016 Kia Forte Koup and Forte5. This part cross-references UAC EX10302C for the same application.

What This Part Helps Address

• Warm air from the vents caused by restricted refrigerant control
• Uneven cabin cooling from a worn or sticking expansion valve
• Incorrect evaporator feed in an R134A A/C system
• HVAC performance issues after compressor or line service
• Loss of cooling efficiency in Hyundai Elantra and Kia Forte applications

Installation Notes and Tips

Verify the vehicle uses a block-type expansion valve with the listed FIO insert O-ring connections before installation. Replace the O-rings with the correct green seals specified for the application, and confirm the system is clean and properly evacuated before recharging. Match the valve to the vehicle’s R134A system and confirm the mounting pattern and line sizes against the original part.

Quality Assurance

Four Seasons 39379 is listed as meeting or exceeding OEM requirements for the specified applications. Confirm fitment by year, make, model, and HVAC configuration before ordering.