Four Seasons 39003 A/C Expansion Valve - Front

Reliable A/C Expansion Valve for Ford Expedition and Lincoln Navigator

The Four Seasons Expansion Valve 39003 is engineered to regulate refrigerant flow in your vehicle's air conditioning system. Designed specifically for Ford Expedition and Lincoln Navigator models, this aluminum block-type valve ensures precise temperature control and system efficiency.

• 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 inlet and outlet fittings with No. 10 thread diameter
• Female liquid inlet and outlet fittings with No. 8 thread diameter
• Includes green O-rings [24615] and [24608] for leak-free sealing
• Meets or exceeds OEM specifications for reliable performance

About the Four Seasons Expansion Valve Product Line

The Expansion Valve product line from Four Seasons focuses on delivering precise refrigerant flow control components for automotive HVAC systems. This line is designed to meet OEM standards, providing dependable fitment and function for specific vehicle applications. The 39003 expansion valve exemplifies this approach by offering a block-type valve optimized for Ford and Lincoln A/C systems using R134a refrigerant.

Detailed Product Description and Specifications

The Four Seasons 39003 expansion valve is crafted from aluminum, providing corrosion resistance and durability under typical automotive operating conditions. It features a block-type design with two mounting holes to ensure a secure fit within the HVAC system. The valve supports R134a refrigerant, the standard for many modern vehicles, including the Ford Expedition and Lincoln Navigator. Both suction inlet and outlet fittings are female with a No. 10 thread diameter, while the liquid inlet and outlet fittings are female with a No. 8 thread diameter. The suction inlet thread type is 7/8" - 18, and the liquid outlet thread type is 3/4" - 18, facilitating proper connection to the vehicle's refrigerant lines. The valve includes two green O-rings ([24615] and [24608]) to maintain a tight seal and prevent leaks.

Common Applications and Issues Addressed

• Regulates refrigerant flow to maintain optimal A/C system pressure
• Prevents overheating and freezing of the evaporator coil
• Improves cabin cooling efficiency in Ford Expedition and Lincoln Navigator
• Replaces faulty or worn expansion valves causing inconsistent cooling
• Addresses refrigerant flow restrictions that reduce A/C performance

Installation Notes and Tips

• Ensure compatibility with Ford Expedition and Lincoln Navigator models before installation
• Use proper tools to avoid damaging the aluminum fittings and threads
• Replace O-rings with those provided to ensure leak-free connections
• Follow vehicle manufacturer guidelines for refrigerant handling and system evacuation
• Inspect the A/C system for other potential issues during installation

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39003 meets or exceeds OEM specifications, ensuring reliable performance and fitment. Manufactured with high-quality aluminum and precision components, this valve is designed for durability and long service life. While specific warranty details may vary, Four Seasons products typically come with a limited warranty covering defects in material and workmanship.