Four Seasons 39005 A/C Expansion Valve - Front

Four Seasons 39005 Expansion Valve Overview

The Four Seasons 39005 A/C expansion valve is a block-type HVAC flow restrictor for R134A systems. It is built from aluminum and uses captured O-ring connections for a secure seal in the air conditioning circuit. This expansion valve is a direct-fit style replacement for select Honda, Acura, and Cadillac applications, including the Honda Pilot, Acura MDX, and Honda Odyssey.

Key Features

• Four Seasons Expansion Valve, part number 39005
• Block type A/C expansion valve for R134A refrigerant systems
• Aluminum construction with aluminum finish
• Captured O-ring liquid and suction connections
• Female inlet and outlet fittings
• Meets or exceeds OEM requirements
• Style: w/o solenoid
• Super heat specification: 2.400
• Compatible with front HVAC applications on select vehicles

Detailed Description

The Four Seasons Expansion Valve line is built for precise refrigerant metering in automotive air conditioning systems. Part number 39005 uses a block-style design with female suction and liquid fittings, captured O-ring sealing surfaces, and aluminum construction for serviceable fitment in R134A-equipped systems. This valve is listed for front applications on 2003-2008 Honda Pilot, 2001-2006 Acura MDX, 1999-2004 Honda Odyssey, 2003-2007 Cadillac CTS, and 2004-2006 Cadillac SRX. This part cross-references UAC (e.g., EX10081C) for the same application.

What It Helps Fix

• Weak or inconsistent cabin cooling
• Improper refrigerant flow through the evaporator circuit
• Expansion valve restriction caused by wear or contamination
• A/C performance issues tied to incorrect superheat control
• Service replacement needs on select Honda, Acura, and Cadillac HVAC systems

Installation Notes and Tips

Verify refrigerant type, port style, and mounting layout before installation. This valve uses captured O-ring liquid and suction connections and is specified without a solenoid or switch. Confirm the vehicle’s front HVAC configuration and match the original part number or interchange reference before service. For best results, inspect the system for contamination and replace damaged seals during A/C repair.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. The part number 39005 is engineered for direct replacement use in supported applications and is backed by Four Seasons product standards.