Four Seasons 39646 A/C Expansion Valve - Front or Rear

Reliable A/C Expansion Valve for Jeep, Nissan, and Ram Vehicles

The Four Seasons Expansion Valve 39646 is engineered to regulate refrigerant flow in automotive air conditioning systems. Designed specifically for select Jeep, Nissan, and Ram models, this aluminum block-type valve ensures efficient cooling performance with R134a refrigerant compatibility.

Key Features of Four Seasons Expansion Valve 39646

• Constructed from durable aluminum for corrosion resistance
• Compatible with R134a refrigerant systems
• Block type design with two mounting holes for secure installation
• Female fittings on suction and liquid inlets and outlets with specific thread diameters (No. 12, No. 10, No. 6, No. 8)
• Sealing washer and O-ring styles for liquid and suction connections
• Meets or exceeds OEM specifications for reliable performance
• Designed without solenoid and does not include a switch
• Super heat rating of -8.000 and 1.5 tonnage capacity

About the Four Seasons Expansion Valve Product Line

The Expansion Valve product line from Four Seasons focuses on precise refrigerant flow control within vehicle A/C systems. This line includes block-type valves like part number 39646, which are designed to meet OEM standards and provide consistent cooling efficiency. The valves are engineered for durability and compatibility with common refrigerants such as R134a, making them suitable replacements for factory-installed components in various Jeep, Nissan, and Ram models.

Detailed Product Description

The Four Seasons Expansion Valve 39646 is a block-type A/C flow restrictor made from aluminum, offering corrosion resistance and long service life. It features female suction and liquid inlet and outlet fittings with specific thread diameters to ensure proper sealing and fitment. The liquid inlet uses a sealing washer style, while the liquid outlet uses an O-ring style, providing secure connections to prevent leaks. This valve is designed for use with R134a refrigerant and supports a 1.5-ton cooling capacity, suitable for vehicles such as the Jeep Grand Wagoneer, Nissan NV2500, and Ram 1500 Classic. The valve does not include a solenoid or switch, aligning with OEM configurations for these models.

Common Issues Addressed by This Expansion Valve

• Inconsistent or insufficient air conditioning cooling
• Refrigerant flow restrictions causing system inefficiency
• Leaks or failures in the expansion valve assembly
• Replacement of worn or damaged OEM expansion valves
• Maintaining proper superheat levels for optimal A/C performance

Installation Notes and Tips

Ensure compatibility with your specific Jeep, Nissan, or Ram model before installation. The valve mounts using two holes and requires proper alignment of female fittings with corresponding thread diameters. Use appropriate sealing washers and O-rings to prevent refrigerant leaks. Since this valve does not include a solenoid or switch, verify your vehicle’s system requirements prior to replacement. Professional installation is recommended to maintain system integrity and performance.

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39646 meets or exceeds OEM standards, ensuring reliable operation within specified vehicle applications. Manufactured with high-quality aluminum and designed for R134a refrigerant systems, this valve supports consistent A/C performance. Warranty details should be confirmed with the product documentation or manufacturer to ensure coverage.