Four Seasons 39306 A/C Expansion Valve

Four Seasons 39306 Expansion Valve

The Four Seasons 39306 expansion valve is a block-type A/C flow restrictor built for R134A systems. It is an aluminum, OE-style replacement for select Ford, Lincoln, and Mercury applications, including the Fusion, MKZ, Milan, and Zephyr.

Four Seasons Expansion Valve line parts are built for direct HVAC service work where accurate refrigerant metering matters. This 39306 valve meets or exceeds OEM requirements and uses a w/o solenoid design for the listed applications.

Key Features

• Part number: 39306
• Block-type A/C expansion valve for R134A refrigerant
• Aluminum construction and aluminum finish
• OE-style replacement that meets or exceeds OEM specifications
• Female suction and liquid connections with sealing washer style fittings
• Mounting hole quantity: 2
• Super heat rating: 2.800
• Tonnage: 1.000

Detailed Description

The Four Seasons 39306 expansion valve regulates refrigerant flow into the evaporator to help maintain proper A/C performance in the HVAC system. It uses a block-type layout with female inlet and outlet connections, including No. 10 suction inlet, No. 12 suction outlet, and No. 8 liquid connections. This configuration supports service replacement on 2006-2009 Ford Fusion, 2007-2009 Lincoln MKZ, 2006-2009 Mercury Milan, and 2006 Lincoln Zephyr applications. If you are sourcing a Four Seasons 39306 expansion valve for a Ford Fusion, Lincoln MKZ, or Mercury Milan repair, this part number is matched to those vehicle listings.

This part cross-references UAC EX10239C for the same application.

What It Helps Address

• Weak or inconsistent cabin cooling
• Improper refrigerant metering at the evaporator
• A/C performance issues tied to a restricted or failing expansion valve
• HVAC service needs on R134A-equipped vehicles
• Replacement of a worn block-type expansion valve in the listed Ford, Lincoln, and Mercury models

Installation Notes and Tips

Verify the vehicle’s refrigerant type, connection style, and mounting layout before installation. Confirm the suction and liquid fitting sizes match the original component, and replace sealing washers or O-rings as required during A/C service. After installation, evacuate and recharge the system according to factory procedures, then check for leaks and proper vent temperature.

Quality Assurance

This Four Seasons expansion valve is listed as meeting or exceeding OEM requirements for the specified applications. Four Seasons 39306 is built for direct-fit HVAC service on the covered Ford, Lincoln, and Mercury vehicles.