Nissens 999796 A/C Expansion Valve

Nissens A/C Expansion Valve for Honda and Acura

The Nissens 999796 A/C expansion valve regulates refrigerant flow in the air conditioning system to help maintain proper evaporator performance. Built with a copper body and calibrated for R134 refrigerant systems, it is a direct-fit service part for select Honda and Acura applications.

Compatible With 1994-2002 Honda Accord, 1994-2001 Acura Integra, 1997-2001 Honda CR-V, 1994-2000 Honda Civic, 1997-1999 Acura CL, 1994-1997 Honda Civic del Sol, and 2000-2006 Honda Insight.

Key Features

• Copper construction for A/C system service
• Angle-style expansion valve design
• Configured for R134 refrigerant systems
• O-rings included for sealing at installation points
• OE-matching pressure performance, tightness, opening, set-point setting, and internal finish standards
• Part number 999796 for easy identification

Detailed Description

The Nissens 999796 thermal expansion valve meters refrigerant into the evaporator based on system demand, helping the A/C system maintain stable cooling performance. This part is built to precise OE matching standards and is tested for pressure performance, leak tightness, opening behavior, set-point accuracy, and internal finish. It is a practical replacement choice for Honda Accord, Civic, CR-V, Civic del Sol, Insight, and Acura Integra and CL models that use an R134-based system. This part cross-references Four Seasons 39000 for the same application.

Common A/C Problems This Part Can Address

• Weak or inconsistent cabin cooling
• Evaporator starvation from restricted refrigerant flow
• Overfeeding that can reduce A/C efficiency
• Erratic vent temperatures during compressor cycling
• Service repairs on leaking or worn expansion valves

Installation Notes and Tips

• Verify the vehicle uses an R134 refrigerant system before installation.
• Inspect the mating surfaces and replace worn seals during service.
• Follow the vehicle service manual for evacuation, recharge, and leak testing.
• Confirm the valve orientation and line routing match the original layout.
• Use clean A/C service practices to protect the system from contamination.

Quality Assurance

Nissens manufactures this expansion valve under controlled production standards and validates key operating characteristics before release. The 999796 is built to support consistent refrigerant control and OE-style fitment for the listed Honda and Acura applications.