Nissens 999795 A/C Expansion Valve - Front

Nissens A/C Expansion Valve 999795

Nissens 999795 is a block-style A/C expansion valve for select Toyota and Lexus applications. It is built from aluminum and uses R134 refrigerant, with OE-matching pressure control, tightness, opening behavior, set-point calibration, and internal finish.

This Nissens thermal expansion valve includes O-rings and mounting hardware where applicable, helping support a direct-service replacement for the factory HVAC flow restrictor. It is a practical choice for Toyota Camry, Highlander, Tundra, and Lexus RX300, ES300, LX470, and Land Cruiser A/C repair work.

Key Features

• Block-style A/C expansion valve
• Aluminum construction
• Designed for R134 refrigerant systems
• O-rings included
• Mounting hardware included
• Built and tested to OE-matching standards
• Part number: 999795

Detailed Description

Nissens 999795 is an HVAC A/C expansion valve that regulates refrigerant flow into the evaporator for stable cooling performance. The aluminum body and block design are suited to service replacement on vehicles using R134 refrigerant, including Toyota Camry, Toyota Highlander, Toyota Tundra, and Lexus RX300 applications. Nissens validates pressure performance, sealing, opening characteristics, set-point accuracy, and internal finish to maintain consistent operation. This part cross-references UAC (e.g., EX9704C, EX10194C) for the same application.

What It Helps Address

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering at the evaporator
• A/C system pressure irregularities
• Refrigerant leakage at the valve connection points
• HVAC performance loss on Toyota and Lexus A/C systems

Installation Notes and Tips

Replace the valve when servicing the A/C system if the original unit shows contamination, sticking, or leakage. Verify refrigerant type before installation; this part is specified for R134 systems. Inspect mating surfaces, replace seals as needed, and follow the vehicle service procedure for evacuation, recharge, and leak checking. Confirm fitment for the exact vehicle year and position before installation on Lexus ES300, RX300, LX470, and Toyota Land Cruiser applications.

Quality Assurance

Nissens manufactures this expansion valve to strict OE-style standards and tests it for pressure control, tightness, opening performance, set-point accuracy, and internal finish. Part number 999795 is built for consistent service replacement on the listed Toyota and Lexus vehicles.