Four Seasons 39591 A/C Expansion Valve - Rear

Reliable A/C Expansion Valve for Cadillac, Chevrolet, and GMC

The Four Seasons Expansion Valve 39591 is engineered to regulate refrigerant flow in your vehicle's air conditioning system. Designed specifically for select Cadillac Escalade ESV, Chevrolet Suburban 3500 HD, and GMC Yukon XL models, this aluminum block-type valve ensures consistent cooling performance.

Key Features of Four Seasons Expansion Valve 39591

• Constructed from durable aluminum for long-lasting use
• Compatible with R134a refrigerant systems
• Block type design with two mounting holes for secure installation
• Female fittings on suction and liquid inlet/outlet with sealing washer styles
• Meets or exceeds OEM specifications for reliable performance
• Designed without solenoid for straightforward operation
• Super heat rating of -4.0 for precise refrigerant control

Detailed Description of the Four Seasons Expansion Valve

This A/C expansion valve from Four Seasons is part of the Expansion Valve product line, which focuses on delivering precise refrigerant metering to maintain optimal air conditioning efficiency. The block-type valve features female insert o-ring suction inlet fittings and sealing washer styles on all liquid and suction connections, ensuring a tight, leak-free seal. With thread diameters ranging from No. 6 to No. 12 and non-threaded fitting types, this valve is designed for compatibility with specific HVAC systems in Cadillac Escalade ESV, Chevrolet Suburban 3500 HD, and GMC Yukon XL vehicles. The absence of a solenoid simplifies the valve's operation, making it a reliable component for maintaining proper refrigerant flow.

Applications and Common Issues Addressed

• Regulates refrigerant flow to prevent A/C system freezing or overheating
• Restores proper cooling performance in Cadillac Escalade ESV, Chevrolet Suburban 3500 HD, and GMC Yukon XL
• Eliminates inconsistent cabin temperatures caused by faulty expansion valves
• Prevents compressor damage by maintaining correct superheat levels
• Ensures efficient operation of R134a refrigerant systems

Installation Notes and Tips

• Compatible with vehicles using R134a refrigerant; verify refrigerant type before installation
• Ensure mounting holes align properly for secure attachment
• Use appropriate sealing washers on all fittings to prevent leaks
• Check thread diameters and fitting types to confirm compatibility with existing HVAC lines
• Professional installation recommended to maintain system integrity

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39591 meets or exceeds OEM standards, providing dependable performance for your vehicle's air conditioning system. Manufactured with high-quality aluminum and precision engineering, this valve is built to last. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.