Four Seasons 39189 A/C Expansion Valve

Four Seasons 39189 Expansion Valve for Subaru Impreza

Four Seasons 39189 is a block-type A/C expansion valve built for R134A systems and direct fit service on select Subaru Impreza models. It is an aluminum, OE-style replacement for 2002-2007 Subaru Impreza applications and is specified for the HVAC refrigerant flow control needed to maintain proper evaporator performance.

Key Features

• Block-type A/C expansion valve for R134A refrigerant systems
• Aluminum construction with aluminum finish
• Fits 2002-2007 Subaru Impreza, N/A
• Female FIO insert O-ring liquid and suction connections
• Liquid inlet and outlet size: 14 mm (0.55 in)
• Suction inlet and outlet size: 17.6 mm (0.69 in)
• Meets or exceeds OEM requirements
• Four Seasons 39189 cross-references UAC EX10144C for the same application

Product Details

The Four Seasons Expansion Valve line is focused on precise refrigerant metering for automotive air conditioning systems. Part number 39189 uses a block-style design with female insert O-ring fittings, making it a direct replacement choice for the Subaru Impreza HVAC system listed here. If you are servicing a 2002-2007 Subaru Impreza and need an A/C expansion valve for R134A refrigerant, Four Seasons 39189 provides the correct connection style and dimensional layout for the application.

This part number, 39189, is also referenced by several aftermarket and OE cross numbers, including 73531FE000 and EX10144C, which helps when matching an existing failed valve to the correct replacement.

Common Problems This Part Can Address

• Inconsistent cabin cooling from improper refrigerant metering
• A/C performance loss caused by a restricted or worn expansion valve
• Evaporator temperature control issues in the HVAC system
• Refrigerant flow imbalance between the liquid and suction sides
• Service replacement for a leaking or sticking expansion valve

Installation Notes and Tips

Verify the vehicle uses an R134A system and confirm the block-type valve layout before installation. Match the liquid and suction fitting sizes, thread diameters, and insert O-ring connection style to the original part. Replace and lubricate O-rings with the correct refrigerant oil during service, and evacuate and recharge the system according to factory procedures after installation. For Subaru Impreza HVAC repairs, confirm the original valve configuration against the removed component before final assembly.

Quality Assurance

Four Seasons 39189 is listed as meeting or exceeding OEM requirements for the specified application. The Four Seasons Expansion Valve product line is built for service replacement use in automotive A/C systems, with application-specific fitment for 2002-2007 Subaru Impreza models.