Nissens 9991013 A/C Expansion Valve - Rear

Nissens A/C Expansion Valve for Toyota and Lexus

The Nissens 9991013 is a block-style A/C expansion valve built for precise refrigerant control in vehicle HVAC systems. It is made from aluminum and uses R134 refrigerant, with O-rings and mounting hardware included where applicable for a cleaner replacement process.

Designed for OE-matching performance, this Nissens thermal expansion valve is validated for pressure performance, tightness, opening behavior, set-point accuracy, and internal finish. It is a direct-fit service part for select Toyota Camry, Highlander, Avalon, RAV4, RAV4 Prime, and Lexus ES300h applications.

Key Features

• Block-style A/C expansion valve for HVAC refrigerant metering
• Aluminum construction for OE-style fit and durability
• Configured for R134 refrigerant systems
• O-rings included for sealing at installation
• Mounting hardware included where applicable
• Built and tested to OE-matching standards

Detailed Description

Nissens part number 9991013 regulates refrigerant flow into the evaporator so the A/C system can maintain proper cooling performance. This expansion valve is engineered for vehicles using R134 refrigerant and is suited to service work where accurate pressure control and sealing are important. The design and validation process focuses on consistent opening characteristics, tightness, and internal finish to support stable HVAC operation. This part cross-references UAC EX10649C for the same application.

Vehicle coverage includes Fits 2019-2023 Toyota Camry, N/A; Fits 2020-2023 Toyota Highlander, Rear; Fits 2019-2022 Toyota Avalon, N/A; Fits 2019-2022 Toyota RAV4, N/A, Exc. Japan Built; Fits 2021 Toyota RAV4 Prime, N/A, USA Built; Fits 2020 Lexus ES300h, N/A; Fits 2021 Lexus ES300h, N/A, USA Built; and Fits 2022-2025 Lexus ES300h, N/A. If you are replacing the A/C expansion valve on a Toyota Camry, Lexus ES300h, or Toyota Highlander, confirm the system layout and refrigerant type before installation.

What This Part Helps Address

• Weak or inconsistent cabin cooling
• Improper refrigerant metering at the evaporator
• A/C performance issues caused by a worn valve
• Sealing problems at the valve connection points
• HVAC service needs on Toyota and Lexus R134 systems

Installation Notes and Tips

Replace the valve only after verifying the vehicle’s refrigerant specification and HVAC configuration. Inspect the mating surfaces, replace seals as needed, and follow proper evacuation and recharge procedures after service. For rear HVAC applications such as the 2020-2023 Toyota Highlander, confirm the correct position before ordering. The Nissens 9991013 is also a common search match for Toyota Camry and Lexus ES300h A/C expansion valve replacement.

Quality Assurance

Nissens manufactures this expansion valve under controlled standards with testing for pressure performance, tightness, opening behavior, set-point setting, and internal finish. The result is a service part built to align with OE matching requirements for select Toyota and Lexus applications, including the Toyota RAV4 and Lexus ES300h.