Four Seasons 39477 A/C Expansion Valve - Front

Reliable A/C Expansion Valve for Dodge and Jeep Models

The Four Seasons Expansion Valve 39477 is engineered to regulate refrigerant flow in your vehicle's air conditioning system. Designed specifically for Dodge Durango and Jeep Grand Cherokee models, this aluminum block-type valve ensures efficient cooling performance with R134a refrigerant compatibility.

• Constructed from durable aluminum material for corrosion resistance
• Compatible with R134a refrigerant systems
• Block type design with two mounting holes for secure installation
• Female suction and liquid inlet/outlet fittings with sealing washer style
• Meets or exceeds OEM specifications for reliable fit and function

Detailed Features of the Four Seasons Expansion Valve

This A/C expansion valve from Four Seasons features a block-type design that integrates seamlessly with the HVAC system of Dodge Durango and Jeep Grand Cherokee (including Grand Cherokee L and WK models). The valve is made from aluminum, providing strength and resistance to corrosion. It includes two mounting holes for stable attachment and uses female fittings on both suction and liquid inlet/outlet ports. The fittings are designed with sealing washers rather than threaded connections, ensuring a secure, leak-free seal. The valve supports refrigerant type R134a, which is standard in many modern vehicles. Thread diameters vary by port, with suction inlet at No. 10 and outlet at No. 12, while liquid inlet and outlet are No. 6 and No. 8 respectively.

About the Four Seasons Expansion Valve Product Line

The Expansion Valve product line by Four Seasons focuses on precise refrigerant flow control within automotive A/C systems. This line is designed to meet or exceed OEM standards, providing reliable temperature regulation and system efficiency. The 39477 part number is part of this line, offering compatibility with select Dodge and Jeep models and ensuring consistent performance in demanding conditions.

Common Applications and Issues Addressed

• Regulates refrigerant flow to maintain optimal cooling in Dodge Durango and Jeep Grand Cherokee A/C systems
• Prevents overheating and compressor damage caused by improper refrigerant metering
• Resolves inconsistent cabin temperature and poor air conditioning performance
• Eliminates refrigerant leaks due to worn or damaged expansion valves
• Supports system efficiency by maintaining correct pressure differentials

Installation Notes and Tips

When installing the Four Seasons Expansion Valve 39477, ensure the vehicle is compatible with R134a refrigerant systems. Use proper tools to avoid damaging the aluminum body or sealing washers. Verify that the female fittings align correctly with the suction and liquid lines, and replace O-rings as needed to maintain a leak-free connection. Follow manufacturer torque specifications for mounting bolts and inspect the HVAC system for any additional issues during installation.

Quality Assurance and Warranty

This expansion valve meets or exceeds OEM quality standards, providing dependable performance for Dodge Durango and Jeep Grand Cherokee vehicles. Four Seasons backs this part with quality assurance to ensure it functions as intended within the HVAC system. Please refer to Four Seasons' warranty policy for specific coverage details.