Four Seasons 39683 A/C Expansion Valve - Rear

Reliable A/C Expansion Valve for Lexus and Toyota Models

The Four Seasons Expansion Valve 39683 is engineered to regulate refrigerant flow in automotive air conditioning systems. Designed specifically for select Lexus and Toyota vehicles, this aluminum block-type valve ensures efficient cooling performance with R134a refrigerant.

• Constructed from durable aluminum material
• Compatible with R134a refrigerant systems
• Block type design without solenoid for precise flow control
• O-ring style liquid and suction inlet/outlet connections
• Meets or exceeds OEM specifications for reliable fit and function
• Includes mounting hardware for straightforward installation
• Designed for 1.5 ton A/C systems with 14 superheat value

About the Four Seasons Expansion Valve Product Line

The Four Seasons Expansion Valve line focuses on delivering dependable A/C flow restrictors that maintain optimal refrigerant metering. This product line is tailored to meet OEM standards, providing consistent performance and durability. The 39683 model exemplifies this with its block type design and compatibility with a range of Lexus and Toyota vehicles, ensuring proper system operation without the need for a solenoid.

Detailed Product Description

The Four Seasons Expansion Valve 39683 is crafted from aluminum to provide strength and corrosion resistance in demanding automotive environments. It is designed for use with R134a refrigerant, common in modern vehicle A/C systems. The valve features O-ring style liquid and suction inlet and outlet ports sized No. 6, No. 10, and No. 12 respectively, ensuring secure and leak-free connections. Its block type construction without a solenoid simplifies the design while maintaining precise refrigerant flow control. This valve is compatible with Lexus models such as the RX350, RX450h, GX550, and Toyota models including the Highlander, Land Cruiser, and Grand Highlander, among others.

Common Applications and Issues Addressed

• Regulates refrigerant flow to maintain proper cooling efficiency
• Prevents A/C system freezing or overheating due to improper refrigerant metering
• Replaces faulty or worn expansion valves causing inconsistent cabin temperatures
• Restores proper superheat levels for optimal compressor protection
• Ensures compatibility with OEM specifications for reliable system performance

Installation Notes and Tips

When installing the Four Seasons Expansion Valve 39683, ensure all O-ring seals are properly seated to prevent refrigerant leaks. This valve is designed for direct replacement in compatible Lexus and Toyota models, so verify fitment before installation. Proper evacuation and recharge of the A/C system with R134a refrigerant is necessary after installation to maintain system integrity. Follow manufacturer torque specifications for mounting hardware to avoid damage.

Quality Assurance and Warranty

This expansion valve meets or exceeds OEM standards, providing dependable performance in automotive HVAC systems. Four Seasons products are manufactured under strict quality controls to ensure durability and reliability. While specific warranty details are not provided here, Four Seasons typically offers coverage against defects in materials and workmanship.