Four Seasons 39162 A/C Expansion Valve - Rear

Four Seasons 39162 Rear A/C Expansion Valve

Four Seasons 39162 is a block-type A/C expansion valve for the rear HVAC system on select Lexus LS430 models. It regulates refrigerant flow in the air conditioning circuit to help maintain proper evaporator performance and stable cabin cooling.

Built from aluminum and specified for R134A systems, this Four Seasons Expansion Valve line part is an OE-style replacement for service work on the rear air conditioning system. The 39162 application is listed for 2001-2006 Lexus LS430, rear, and meets or exceeds OEM requirements.

Key Features

• Four Seasons Expansion Valve line, part number 39162
• Fits 2001-2006 Lexus LS430, rear
• Block-type A/C expansion valve with solenoid
• Aluminum construction and aluminum finish
• Designed for R134A refrigerant systems
• Meets or exceeds OEM specifications
• FIO insert O-ring liquid and suction connections
• Factory-style fitment for rear HVAC service

Product Details

The Four Seasons 39162 expansion valve meters refrigerant into the evaporator based on system demand, helping the rear A/C circuit maintain correct superheat and cooling balance. It uses female suction and liquid fittings with insert O-ring style connections, along with the specified O-ring sealing points for the application. For Lexus LS430 rear A/C repair, this part number 39162 is a direct service component for restoring proper refrigerant control in the HVAC flow path.

This part cross-references UAC EX10155C for the same application.

Common Issues It May Address

• Rear air conditioning blowing warm air
• Inconsistent cabin temperature from the rear HVAC system
• Restricted refrigerant metering at the evaporator
• Improper superheat control in the A/C circuit
• Leak-related service needs at the expansion valve connection points

Installation Notes and Tips

Verify the vehicle uses R134A refrigerant and confirm rear HVAC service access before replacement. Inspect the mating lines, sealing surfaces, and O-ring condition during installation, and evacuate and recharge the system according to factory service procedures after repairs. Confirm the valve orientation and connection sizes match the original rear expansion valve on the Lexus LS430.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. The 39162 is part of the Four Seasons Expansion Valve product line, built for service replacement in applications that require OE-style refrigerant control and fitment accuracy.