Four Seasons 39370 A/C Expansion Valve - Front

Reliable A/C Expansion Valve for Mercedes-Benz Models

The Four Seasons Expansion Valve 39370 is engineered to regulate refrigerant flow in your vehicle's air conditioning system. Designed specifically for select Mercedes-Benz models, this aluminum block-type valve ensures precise temperature control and efficient A/C performance.

• Constructed from durable aluminum material with an aluminum finish
• Compatible with R134a refrigerant systems
• Block type design with 2 mounting holes for secure installation
• Female suction and liquid inlet/outlet fittings with specific thread diameters
• Meets or exceeds OEM specifications for reliable fit and function

About the Four Seasons Expansion Valve Product Line

The Expansion Valve product line by Four Seasons focuses on high-quality A/C flow restrictors designed to maintain optimal refrigerant flow and system pressure. The 39370 valve is part of this line, offering precise control and compatibility with various Mercedes-Benz models to support efficient air conditioning operation.

Detailed Product Description

This A/C expansion valve is crafted from aluminum, providing corrosion resistance and durability under typical automotive conditions. It features a block-type design with two mounting holes for a secure fit. The valve is designed for use with R134a refrigerant and includes female suction inlet and outlet fittings with No. 10 and No. 12 thread diameters respectively, both non-threaded. Similarly, the liquid inlet and outlet fittings are female with No. 6 and No. 8 thread diameters, also non-threaded. The valve uses insert o-ring types for both liquid inlet and outlet connections, ensuring a tight seal and preventing leaks. It includes green o-rings ([24606] and [24608]) for proper sealing. This part meets or exceeds OEM standards, making it a dependable replacement for Mercedes-Benz GL320, GL350, GL450, GL500, GL550, ML63 AMG, ML320, ML350, ML450, ML500, ML550, R63 AMG, R320, R350, R500, and R550 models.

Common Issues Addressed by This Expansion Valve

• Inconsistent or insufficient cooling performance in the A/C system
• Refrigerant flow irregularities causing temperature fluctuations
• Leaks or seal failures in the expansion valve area
• Reduced efficiency due to worn or damaged valve components
• System pressure imbalances affecting overall A/C operation

Installation Notes and Tips

• Ensure compatibility with your specific Mercedes-Benz model before installation
• Use proper tools to avoid damaging the aluminum fittings and o-rings
• Replace o-rings as needed to maintain a secure, leak-free seal
• Follow manufacturer torque specifications for mounting bolts
• Inspect the A/C system for other potential issues during replacement

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39370 is manufactured to meet or exceed OEM quality standards, ensuring reliable performance and durability. This part is backed by Four Seasons' quality assurance protocols, providing confidence in its fit and function for compatible Mercedes-Benz vehicles.