Nissens 999893 A/C Expansion Valve - Front

Nissens A/C Expansion Valve for Toyota and Lexus

The Nissens 999893 A/C expansion valve is a block-style thermal expansion valve built for precise refrigerant control in the HVAC system. It is made from aluminum and uses R134 refrigerant, with OE-matching pressure performance, tightness, opening behavior, set-point setting, and internal finish.

Compatible With select Lexus LX570, Toyota Land Cruiser, Toyota Sequoia, Toyota Sienna, Toyota Yaris, Toyota Yaris R, and Lexus GX460 applications, this part number 999893 is a direct-fit service component for front A/C system repair.

Key Features

• Aluminum construction for HVAC service applications
• Block-style A/C expansion valve design
• Configured for R134 refrigerant systems
• O-rings included for sealing at installation
• Mounting hardware included where applicable
• Built and tested to OE-matching standards for pressure performance and tightness

Detailed Description

Nissens thermal expansion valves are engineered to regulate refrigerant flow through the evaporator, helping the A/C system maintain proper cooling performance and stable outlet temperatures. The 999893 is designed for vehicles using an aluminum block valve layout and R134 refrigerant, with manufacturing controls focused on opening characteristics, sealing integrity, and internal finish. This part number 999893 is a practical replacement choice for Toyota Land Cruiser, Toyota Sequoia, and Lexus LX570 front HVAC service, as well as other listed Toyota and Lexus applications.

This part cross-references UAC EX10328C for the same application.

What It Helps Fix

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering at the evaporator
• A/C outlet air that is too warm or fluctuates
• System performance issues caused by a worn or sticking expansion valve
• Sealing problems at the valve connection points

Installation Notes and Tips

• Verify the vehicle uses an R134 system before installation.
• Replace the O-rings during service and lubricate them with the correct refrigerant oil.
• Inspect the evaporator, lines, and compressor for contamination before installing the new valve.
• Recover, evacuate, and recharge the system according to factory service procedures.
• Confirm the exact fitment by year, make, model, and position before ordering.

Quality Assurance

Nissens manufactures this expansion valve under controlled testing and validation procedures to verify pressure performance, tightness, opening behavior, set-point accuracy, and internal finish to OE matching standards.

• Fits 2013-2020 Lexus LX570, Front
• Fits 2008-2011 Lexus LX570, Front
• Fits 2018-2020 Toyota Land Cruiser, Front, w/o Cool Box
• Fits 2009-2019 Toyota Sequoia, Front
• Fits 2013-2018 Toyota Yaris, N/A
• Fits 2016-2018 Toyota Yaris R, N/A
• Fits 2013-2017 Toyota Land Cruiser, Front
• Fits 2008-2011 Toyota Land Cruiser, Front
• Fits 2011-2016 Toyota Sienna, Front
• Fits 2011-2014 Lexus GX460, Front, w/ Dual Zone Climate Control