Four Seasons 39330 A/C Expansion Valve - Rear

Overview of Four Seasons Expansion Valve 39330

The Four Seasons Expansion Valve 39330 is engineered for precise control of refrigerant flow in automotive A/C systems. Designed specifically for Chrysler, Dodge, and Volkswagen vehicles such as the Grand Caravan, Routan, and Town & Country, this aluminum block-type valve ensures efficient air conditioning performance with R134a refrigerant.

• Constructed from durable aluminum material
• Compatible with R134a refrigerant systems
• Block type design with two mounting holes for secure installation
• Female suction and liquid inlet/outlet fittings with specific thread diameters
• Includes green o-rings for reliable sealing
• Meets or exceeds OEM specifications

Four Seasons Expansion Valve Product Line Details

The Expansion Valve product line by Four Seasons focuses on delivering reliable A/C flow restrictors that regulate refrigerant flow accurately to maintain optimal cooling performance. The 39330 valve is part of this line, featuring a block-type design that integrates seamlessly with factory HVAC systems in select Chrysler, Dodge, and Volkswagen models. This ensures consistent operation and compatibility with original equipment standards.

Technical Description and Specifications

This A/C expansion valve is made from aluminum, providing corrosion resistance and durability under typical automotive operating conditions. It is designed for use with R134a refrigerant and features female fittings on both suction and liquid inlet/outlet ports. The suction inlet and outlet fittings have thread diameters of No. 10 and No. 12 respectively, while the liquid inlet and outlet fittings measure No. 6 and No. 8. Both liquid inlet and outlet connections use insert o-ring types with green o-rings included for secure sealing. The valve’s mounting includes two holes for stable attachment within the HVAC system.

Applications and Common Issues Addressed

• Regulates refrigerant flow to prevent A/C system freezing or overheating
• Restores proper cooling performance in Chrysler Grand Caravan, Dodge Routan, and Volkswagen Town & Country
• Replaces faulty or worn expansion valves causing inconsistent cabin temperatures
• Helps resolve pressure imbalances in the A/C system
• Prevents refrigerant leaks with included o-rings and precise fittings

Installation Notes and Tips

• Ensure compatibility with vehicle make and model before installation
• Use proper tools to avoid damaging female fittings and o-rings
• Inspect and replace o-rings as needed to maintain a leak-free seal
• Follow manufacturer torque specifications for mounting bolts
• Evacuate and recharge the A/C system with R134a refrigerant after installation

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39330 meets or exceeds OEM standards for fit, form, and function. Manufactured with quality aluminum and precision fittings, it is designed to provide reliable service in compatible Chrysler, Dodge, and Volkswagen vehicles. Warranty coverage details should be confirmed with the product documentation or supplier.