Nissens 999279 A/C Expansion Valve - Front

Nissens A/C Expansion Valve for Nissan and INFINITI

Nissens part 999279 is an aluminum block-style A/C expansion valve for R134A systems. It is built for precise refrigerant flow control in select Nissan and INFINITI applications, including Nissan Altima, Sentra, 370Z, GT-R, and NV-series vans.

Key Features

• Aluminum construction for HVAC service applications
• Block-style A/C expansion valve design
• Configured for R134A refrigerant systems
• Includes O-rings and uses 4 O-rings total
• Liquid inlet thread diameter: 0.3900
• Liquid outlet thread diameter: 0.5500
• Suction inlet thread diameter: 0.7100
• Suction outlet thread diameter: 0.7100
• Direct replacement option for select Nissan and INFINITI HVAC systems

Product Details

This Nissens 999279 A/C expansion valve regulates refrigerant flow into the evaporator to help maintain proper system balance in the air conditioning circuit. It is a block-type valve made from aluminum and specified for R134A refrigerant, making it a practical OE-style service part for vehicles such as the 2007-2012 Nissan Altima, 2007-2012 Nissan Sentra, 2009-2010 Nissan 370Z, and 2008-2010 INFINITI G37. This part cross-references Four Seasons 39292 and UAC EX10221C for the same application.

What It Helps Address

• Inconsistent cabin cooling performance
• Restricted or uneven refrigerant metering
• Warm air from the vents during A/C operation
• Evaporator performance issues tied to valve wear or blockage
• Service replacement needs on Nissan and INFINITI HVAC systems

Installation Notes and Tips

Verify refrigerant type, port layout, and thread dimensions before installation. Replace the O-rings during service and inspect the surrounding A/C components for contamination or wear. This valve does not include mounting hardware. Confirm vehicle-specific fitment for applications such as Fits 2012-2021 Nissan NV1500, Fits 2012-2021 Nissan NV2500, and Fits 2012-2021 Nissan NV3500, Front.

Quality Assurance

Nissens develops and manufactures thermal management components to consistent quality standards across its aftermarket range. Part number 999279 is produced as a Genuine Nissens Quality component for HVAC service work.