Four Seasons 39010 A/C Expansion Valve - Rear

Four Seasons 39010 A/C Expansion Valve

Four Seasons 39010 is a TXV-style A/C expansion valve built for R134A systems with a brass body. It regulates refrigerant flow into the evaporator to help maintain stable cooling performance in rear HVAC applications.

Compatible With rear A/C service on 2001-2006 Chevrolet Tahoe, 2001-2006 GMC Yukon, 2002-2006 Cadillac Escalade, and 2002 Cadillac Escalade EXT.

Key Features

• TXV design for controlled refrigerant metering
• Brass construction
• Configured for R134A refrigerant systems
• Rear HVAC application
• Four Seasons Expansion Valve line
• Part number 39010 for direct catalog lookup

Application Details

This Four Seasons expansion valve is used in rear air conditioning circuits where precise refrigerant control is needed at the evaporator. The TXV design responds to system demand by regulating refrigerant flow, which supports consistent outlet temperatures and proper evaporator operation in vehicles such as the Chevrolet Tahoe, GMC Yukon, and Cadillac Escalade.

This part cross-references UAC EX9708C for the same application.

What It Helps Address

• Rear A/C cooling that is weak or inconsistent
• Improper refrigerant metering at the evaporator
• Temperature fluctuations in the rear HVAC system
• Expansion valve restriction or wear-related flow issues
• Service replacement for R134A rear A/C systems

Installation Notes

Verify the vehicle uses an R134A rear HVAC setup before ordering. Match the valve location, refrigerant type, and OE-style configuration to the original part. During service, inspect the system for contamination, leaks, and related component wear so the replacement valve can operate correctly.

Quality Assurance

Four Seasons catalogs this part as an expansion valve for rear A/C applications, with brass construction and TXV operation specified for R134A systems. Part number 39010 is listed with multiple interchange references for catalog matching and application verification.