Four Seasons 39023 A/C Expansion Valve

Four Seasons 39023 Expansion Valve Overview

Four Seasons 39023 is a block-type A/C expansion valve for R134A systems. Built from aluminum and engineered to meet or exceed OEM requirements, it is a direct-fit HVAC flow restrictor for select Nissan applications, including Murano, Altima, and Sentra models.

The Four Seasons Expansion Valve line focuses on accurate refrigerant metering and OE-style fitment. Part number 39023 uses female insert O-ring connections, a w/o solenoid design, and the specified O-ring sealing points needed for service on the listed Nissan A/C systems.

Key Features

• Four Seasons part number 39023
• Block-type A/C expansion valve for R134A refrigerant
• Aluminum construction with aluminum finish
• Female inlet and outlet fittings with insert O-ring sealing
• Meets or exceeds OEM specifications
• Designed for 1.5 tonnage applications
• W/o solenoid configuration
• Cross-reference example: UAC EX10188C

Detailed Description

This A/C expansion valve regulates refrigerant flow into the evaporator so the HVAC system can maintain proper cooling performance. Four Seasons 39023 is built for select Nissan Murano, Altima, and Sentra vehicles and is listed for R134A systems with the exact fitting styles and thread dimensions shown in the product data. If you are replacing a Nissan Altima expansion valve, Nissan Sentra expansion valve, or Nissan Murano expansion valve, this part number 39023 is the type of OE-style service component used in those applications.

Fitment includes 2003-2006 Nissan Altima, 2003-2006 Nissan Sentra, 2002 Nissan Altima from 4/02, 2002 Nissan Sentra from 4/02 and to 4/02, 2000-2001 Nissan Sentra, and 2008-2011 Nissan Murano with the listed date notes.

What It Helps Address

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering at the evaporator
• Compressor cycling caused by restricted A/C flow
• HVAC performance loss from a worn expansion valve
• Service replacement for leaking or sticking valve assemblies

Installation Notes and Tips

Verify the vehicle’s build date and system configuration before ordering, especially for 2002 Altima and Sentra applications and the 2011 Murano through 2/11 note. Match the inlet and outlet fitting styles, thread sizes, and R134A system requirements to the original part before installation. Replace the sealing O-rings as required during A/C service and evacuate and recharge the system according to factory procedures after repair.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM specifications for the stated applications. The part number 39023 is built as an OE-style replacement for the Nissan HVAC fitments shown above.

• Fits 2011 Nissan Murano, N/A; Expansion Valve (to 2/11)
• Fits 2008-2010 Nissan Murano, N/A; Expansion Valve
• Fits 2003-2006 Nissan Altima, N/A; Expansion Valve
• Fits 2003-2006 Nissan Sentra, N/A; Expansion Valve
• Fits 2002 Nissan Altima, N/A; Expansion Valve (from 4/02)
• Fits 2002 Nissan Sentra, N/A; Expansion Valve (from 4/02)
• Fits 2002 Nissan Sentra, N/A; Expansion Valve (to 4/02; New Part)
• Fits 2000-2001 Nissan Sentra, N/A; Expansion Valve