Four Seasons 39663 A/C Expansion Valve

Four Seasons 39663 Expansion Valve Overview

The Four Seasons 39663 is a block-type A/C expansion valve built for R134A systems and direct OE-style service replacement. It is specified for the 2007-2009 Hyundai Santa Fe with no dual A/C, making it a focused choice for restoring proper refrigerant metering in the HVAC system.

Four Seasons Expansion Valve 39663 is an aluminum, O-ring style valve with female fittings and a 2-hole mounting pattern. It meets or exceeds OEM requirements and is listed as a w/o solenoid design for 1.5 ton applications.

Key Features

• Brand: Four Seasons Expansion Valve
• Part number: 39663
• Block-type A/C expansion valve for R134A refrigerant
• Aluminum construction for HVAC service applications
• Female suction and liquid fittings with O-ring seals
• 2 mounting holes for OE-style installation
• Meets or exceeds OEM specifications
• Designed without solenoid
• 1.5 ton rating

Detailed Product Description

This Four Seasons 39663 expansion valve regulates refrigerant flow into the evaporator to help maintain correct system pressure and temperature control. It uses No. 10 female suction inlet and outlet threads, a No. 6 female liquid inlet thread, and a No. 10 female liquid outlet thread, with O-ring style connections for service on R134A-equipped HVAC systems. For Hyundai Santa Fe owners searching for a 2007-2009 Hyundai Santa Fe expansion valve or a Four Seasons 39663 A/C expansion valve, this part matches the listed application with no dual A/C.

This part cross-references UAC EX10252C for the same application.

What It Helps Address

• Weak or inconsistent A/C cooling
• Incorrect refrigerant metering at the evaporator
• High or unstable system pressures related to flow control
• Temperature fluctuations in the cabin HVAC system
• Service replacement for a worn or restricted expansion valve

Installation Notes and Tips

Verify the vehicle uses R134A refrigerant and the listed block-type, no-solenoid configuration before installation. Confirm the 2007-2009 Hyundai Santa Fe application is equipped without dual A/C, and inspect O-rings, mating surfaces, and system cleanliness during service to support proper sealing and flow.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, supporting OE-style fit and function for the specified application. Part number 39663 is also referenced under OE-style interchange numbers for service identification.