Four Seasons 39123 A/C Expansion Valve

Four Seasons 39123 Expansion Valve

The Four Seasons 39123 expansion valve is a block-type A/C flow restrictor built for R134A systems and engineered for precise refrigerant control. It is a direct-fit HVAC service part for the 2001-2005 Kia Rio and is specified as an OE-style replacement for the original expansion valve.

Key Features

• Brand: Four Seasons Expansion Valve
• Part number: 39123
• Block type A/C expansion valve for R134A refrigerant
• Aluminum construction with aluminum finish
• Female FIO insert O-ring inlet and outlet connections
• Meets or exceeds OEM requirements
• Designed for 1.5 tonnage applications
• Style: w/o solenoid
• Fits 2001-2005 Kia Rio, N/A

Product Details

Four Seasons 39123 is part of the Expansion Valve line, a focused HVAC product line for refrigerant metering and system control. This valve uses aluminum body construction, a block-style layout, and female insert O-ring fittings to match the factory connection style used in the listed Kia Rio applications. The part number 39123 is also referenced in aftermarket catalogs for the same application, including UAC EX10090C and EX10091C, and it cross-references Monroe Shocks & Struts 172286 and 182286 for the same application.

For 2001-2005 Kia Rio A/C repair, this expansion valve helps restore proper refrigerant flow through the evaporator circuit. It is specified with no solenoid, a -0.500 super heat setting, and OEM-level fitment requirements for service replacement work.

Common Problems This Part Can Address

• Inconsistent cabin cooling on a Kia Rio A/C system
• Restricted refrigerant metering at the evaporator
• Improper expansion valve operation after HVAC service
• Loss of cooling performance caused by a worn or sticking valve
• Factory-style replacement needs for R134A air conditioning repair

Installation Notes and Tips

Verify the vehicle uses the listed block-type, R134A expansion valve configuration before installation. Match the inlet and outlet fitting style, thread diameter references, and O-ring sealing surfaces to the original part. Replace and lubricate sealing O-rings as needed during HVAC service, then evacuate and recharge the system according to the vehicle service procedure. Confirm system pressures and vent temperature after installation on the Kia Rio.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements for the specified application. The part is built for direct replacement use in the 2001-2005 Kia Rio HVAC system and follows the brand’s expansion valve product line specifications.