Four Seasons 39347 A/C Expansion Valve

Overview of Four Seasons Expansion Valve 39347

The Four Seasons Expansion Valve 39347 is designed specifically for Mazda 3 and Mazda 3 Sport models. This A/C expansion valve plays a critical role in regulating refrigerant flow within the vehicle's air conditioning system, ensuring optimal cooling performance with R134a refrigerant.

• Constructed from durable aluminum material with an aluminum finish
• Block type design with two mounting holes for secure installation
• Compatible with R134a refrigerant systems
• Female suction and liquid inlet/outlet fittings with No. 6 and No. 10 thread diameters
• Meets or exceeds OEM specifications for reliable performance
• Includes green O-rings ([24610] and [24616]) for proper sealing

Four Seasons Expansion Valve Product Line Details

The Expansion Valve product line from Four Seasons focuses on precision-engineered A/C flow restrictors that maintain proper refrigerant metering in automotive HVAC systems. The 39347 model exemplifies this line by offering a block type valve constructed from aluminum, designed to fit specific vehicle applications such as the Mazda 3 and 3 Sport. This ensures consistent refrigerant flow and system efficiency under varying operating conditions.

Technical Description and Specifications

This A/C expansion valve features a block type design made from aluminum, providing corrosion resistance and durability. It is engineered for use with R134a refrigerant and includes female fittings on both suction and liquid inlet/outlet ports. The suction inlet and outlet fittings have a No. 10 thread diameter, while the liquid inlet and outlet fittings have No. 6 and No. 10 thread diameters respectively. The valve uses insert o-ring types for both liquid inlet and outlet connections, ensuring a secure and leak-free fit. The product includes three green O-rings ([24610] and [24616]) to maintain proper sealing during installation.

Common Applications and Issues Addressed

• Regulates refrigerant flow in Mazda 3 and Mazda 3 Sport A/C systems
• Prevents inconsistent cooling caused by faulty or worn expansion valves
• Resolves issues related to improper refrigerant metering and pressure drops
• Helps eliminate A/C system freezing or overheating problems
• Supports restoration of efficient air conditioning performance

Installation Notes and Tips

When installing the Four Seasons Expansion Valve 39347, ensure compatibility with Mazda 3 and 3 Sport models using R134a refrigerant. Properly align the two mounting holes for secure attachment. Use the included green O-rings to prevent refrigerant leaks at the liquid and suction fittings. Avoid cross-threading by noting that the suction and liquid fittings are not threaded but use insert o-ring connections. It is recommended to inspect the entire A/C system for leaks or damage before installation to ensure optimal performance.

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39347 meets or exceeds OEM standards for fit, form, and function, providing reliable operation within the vehicle’s HVAC system. Manufactured with high-quality aluminum and precision components, this valve is designed for durability and consistent performance. Warranty details should be confirmed with the product documentation or supplier, as coverage may vary.