Four Seasons 39027 A/C Expansion Valve

Four Seasons 39027 Expansion Valve Overview

The Four Seasons 39027 A/C expansion valve is a TXV-style HVAC flow restrictor built for R134A systems. With a brass body and a 3.5 super heat setting, it helps regulate refrigerant flow at the evaporator for stable air conditioning performance in select Nissan and INFINITI applications.

Compatible With 1993-2001 Nissan Frontier, Xterra, Altima, Sentra, 200SX, D21, and 1995-1996 INFINITI G20 applications, this Four Seasons expansion valve is a direct-fit service part for vehicles using the listed externally equalized or standard expansion valve configurations.

Key Features

• Brand: Four Seasons Expansion Valve
• Part number: 39027
• TXV design for controlled refrigerant metering
• Brass construction
• Configured for R134A refrigerant systems
• 3.5 super heat specification
• Fits select Nissan and INFINITI HVAC applications

Product Details

The Four Seasons 39027 expansion valve meters refrigerant into the evaporator based on system demand, helping maintain proper A/C operation in vehicles that use a thermal expansion valve. This part is listed for 2001 Nissan Frontier, 1998-2000 Nissan Frontier, 2000 Nissan Xterra, 1993-1999 Nissan Altima, 1994-1999 Nissan Sentra, 1995-1998 Nissan 200SX, 1995-1996 INFINITI G20, and 1994 Nissan D21. For shoppers searching for a Nissan Frontier expansion valve or a Nissan Altima A/C expansion valve, this part number 39027 matches the documented applications.

This part cross-references Monroe Shocks & Struts (e.g., 182310) for the same application.

Common A/C Problems This Part May Address

• Weak or inconsistent cabin cooling
• Improper refrigerant metering at the evaporator
• A/C performance issues tied to a worn TXV
• Temperature fluctuations during compressor cycling
• Restricted refrigerant flow in the HVAC system

Installation Notes and Tips

Verify the vehicle’s refrigerant type, equalization style, and model-year application before installation. This Four Seasons 39027 valve is listed for externally equalized use on select Frontier applications, so matching the original system configuration is important. Replace any disturbed seals and evacuate and recharge the system according to OEM service procedures after installation.

Quality Assurance

Four Seasons supplies HVAC service components for automotive air conditioning repairs, and this expansion valve is specified with the listed material, refrigerant, and super heat characteristics for the documented applications.