Four Seasons 39673 A/C Expansion Valve

Reliable A/C Expansion Valve for Subaru Forester and WRX

The Four Seasons Expansion Valve 39673 is engineered to regulate refrigerant flow in your Subaru Forester or WRX's air conditioning system. Designed with durable aluminum and compatible with R134a refrigerant, this block-type valve ensures efficient cooling performance.

• Constructed from lightweight aluminum for durability
• Compatible with R134a refrigerant systems
• Block type design without solenoid for precise flow control
• O-ring style liquid and suction inlet/outlet connections
• Meets or exceeds OEM specifications for reliable fit and function
• Designed for 1.5 tonnage A/C systems

About the Four Seasons Expansion Valve Product Line

The Four Seasons Expansion Valve line focuses on high-quality A/C flow restrictors that maintain optimal refrigerant metering in automotive HVAC systems. The 39673 model is part of this line, offering a block-type valve designed specifically for vehicles using R134a refrigerant. This product line emphasizes OEM compatibility and precise thermal expansion control to support efficient air conditioning operation.

Product Details and Specifications

This A/C expansion valve features a block-type design constructed from aluminum, providing corrosion resistance and long service life. It is designed for use with R134a refrigerant and supports a 1.5 tonnage cooling capacity. The valve includes O-ring style liquid inlet and outlet connections sized No. 6 and No. 8 respectively, as well as suction inlet and outlet connections sized No. 10 and No. 12. The valve operates without a solenoid and offers a superheat value of -9.0, ensuring proper refrigerant flow and system efficiency.

Common Applications and Issues Addressed

• Regulates refrigerant flow in Subaru Forester and WRX A/C systems
• Prevents inefficient cooling caused by faulty expansion valves
• Addresses inconsistent cabin temperature and poor airflow
• Helps resolve refrigerant leaks related to worn valve components
• Supports stable superheat levels for optimal compressor performance

Installation Notes and Tips

Ensure compatibility with your Subaru Forester or WRX model before installation. The Four Seasons Expansion Valve 39673 requires proper handling of O-ring connections to prevent leaks. Since mounting hardware is not included, use existing or OEM hardware for secure installation. It is recommended to have the A/C system evacuated and recharged by a qualified technician after replacement.

Quality Assurance and Warranty

This expansion valve meets or exceeds OEM standards, providing reliable performance and fitment. Four Seasons products are manufactured to strict quality controls to ensure durability and function. Please refer to Four Seasons' warranty policy for specific coverage details.