Four Seasons 39634 A/C Expansion Valve

Four Seasons 39634 Expansion Valve Overview

Four Seasons 39634 is a block-type A/C expansion valve for R134A systems, built with an aluminum body and O-ring connections for the liquid and suction lines. It meets or exceeds OEM requirements and is specified for 1.5 ton applications in Toyota and Lexus HVAC systems.

This expansion valve is used in Toyota Camry, Toyota Highlander rear A/C, Toyota Avalon, Toyota RAV4, Toyota RAV4 Prime, and Lexus ES300h applications listed below. If you are replacing a worn or restricted valve, Four Seasons 39634 provides the correct flow-control style for the factory system.

Key Features

• Block-type A/C expansion valve for R134A refrigerant
• Aluminum construction for HVAC service applications
• O-ring liquid and suction fittings
• Female inlet and outlet connections
• No solenoid included
• Meets or exceeds OEM specifications
• 1.5 ton rating
• Four Seasons 39634 cross-references UAC EX10649C

Fitment Details

• Fits 2022-2025 Lexus ES300h, N/A
• Fits 2020 Lexus ES300h, N/A
• Fits 2021 Lexus ES300h, USA Built; N/A
• Fits 2019-2023 Toyota Camry, N/A
• Fits 2020-2023 Toyota Highlander, Rear
• Fits 2019-2020 Toyota Avalon, N/A
• Fits 2021 Toyota Avalon, N/A
• Fits 2022 Toyota Avalon, N/A
• Fits 2019-2020 Toyota RAV4, N/A
• Fits 2021 Toyota RAV4, USA Built; N/A
• Fits 2022 Toyota RAV4, Except Japan Built; N/A
• Fits 2021 Toyota RAV4 Prime, USA Built; N/A

What This Part Helps Address

• Inconsistent cabin cooling from a restricted expansion valve
• Incorrect refrigerant metering in the A/C evaporator circuit
• Warm air output when the HVAC system is charged but not cooling properly
• Pressure imbalance caused by a failing flow restrictor
• Rear A/C cooling concerns on applicable Toyota Highlander models

Installation Notes and Tips

Verify refrigerant type, line fitting sizes, and vehicle build details before installation. This part uses female O-ring connections with No. 12 suction inlet and outlet threads, plus No. 6 liquid inlet and No. 10 liquid outlet threads. Confirm the vehicle is the correct build variant for Toyota RAV4 and Lexus ES300h applications, since some listings exclude Japan-built or non-USA-built vehicles.

For best results, evacuate and recharge the system according to factory service procedures after replacement. Inspect the A/C system for contamination, leaks, and compressor issues before installing the new valve.

Quality Assurance

Four Seasons 39634 is an OEM-style replacement expansion valve that meets or exceeds original equipment requirements for the listed Toyota and Lexus applications. Four Seasons is a recognized HVAC parts brand, and this valve is built for direct service use in R134A systems.