Four Seasons 39451 A/C Expansion Valve

Reliable A/C Expansion Valve for Chrysler and Jeep Cherokee

The Four Seasons Expansion Valve 39451 is engineered to regulate refrigerant flow in your vehicle's air conditioning system. Designed specifically for Chrysler and Jeep Cherokee models from 2000, this aluminum block-type valve ensures precise temperature control and efficient cooling performance.

• Constructed from durable aluminum material with an aluminum finish
• 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

Four Seasons Expansion Valve Product Line Overview

The Expansion Valve product line by Four Seasons focuses on delivering dependable A/C flow restrictors that maintain optimal refrigerant metering. This line includes block-type valves like part number 39451, designed to provide consistent performance and compatibility with factory systems. The valves feature sealing washer fittings to ensure leak-free connections and are built to meet or exceed original equipment manufacturer standards.

Detailed Product Description and Specifications

This A/C expansion valve is crafted from aluminum, offering corrosion resistance and lightweight durability. It is designed for use with R134a refrigerant, common in many Chrysler and Jeep Cherokee air conditioning systems. The block-type valve includes two mounting holes for secure attachment. Both suction and liquid inlet/outlet fittings are female with sealing washer styles, ensuring proper sealing without threaded connections. The suction inlet and outlet fittings have No. 10 and No. 12 thread diameters respectively, while the liquid inlet and outlet fittings have No. 6 and No. 8 diameters. The valve includes slim line sealing washers (O-Rings 24401 and 24402) to maintain system integrity.

Common Applications and Issues Addressed

• Regulates refrigerant flow to maintain consistent cabin temperature
• Prevents A/C system freezing or overheating
• Resolves issues with fluctuating air conditioning performance
• Replaces faulty or leaking expansion valves in Chrysler and Jeep Cherokee 2000 models
• Helps restore proper pressure balance within the A/C system

Installation Notes and Tips

Ensure the vehicle’s A/C system is fully evacuated and depressurized before installation. The valve’s two mounting holes allow for straightforward replacement. Use the included sealing washers to prevent leaks at the liquid inlet and outlet fittings. Verify compatibility with Chrysler and Jeep Cherokee 2000 models prior to installation. Proper torque specifications should be followed to avoid damage to fittings or valve body.

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39451 meets or exceeds OEM standards, providing reliable performance and durability. Manufactured with precision aluminum components and sealing washers, this valve is designed for long service life. Warranty coverage details should be confirmed with the product documentation or manufacturer.