Four Seasons 39373 A/C Expansion Valve - Rear

Four Seasons 39373 Expansion Valve for Rear A/C

Four Seasons 39373 is a block-type A/C expansion valve built for R134A systems and rear HVAC service. It is an aluminum replacement expansion valve for Ford Expedition and Lincoln Navigator applications with rear air conditioning, including 2007-2017 Ford Expedition rear and 2007-2015 Lincoln Navigator rear.

Key Features

• Four Seasons Expansion Valve line, part number 39373
• Block-type A/C expansion valve for rear HVAC systems
• Aluminum construction with aluminum finish
• Configured for R134A refrigerant
• Meets or exceeds OEM requirements
• Super heat setting: 11.000
• Style: w/o solenoid
• Mounting hole quantity: 2
• Includes OE-style green O-ring sealing points for liquid and suction connections

Product Details

The Four Seasons 39373 expansion valve regulates refrigerant flow into the evaporator to maintain proper cooling performance in rear A/C systems. Its block-type design uses female suction and liquid connections with insert O-ring fittings, and the listed inlet and outlet sizes support the specified OE-style plumbing used on rear HVAC assemblies. This part cross-references UAC EX10241C for the same application. For buyers searching for a rear A/C expansion valve for Ford Expedition or Lincoln Navigator, Four Seasons 39373 provides a direct replacement option for the listed vehicles.

What It Helps Address

• Weak rear cabin cooling caused by restricted refrigerant metering
• Inconsistent evaporator performance in the rear HVAC circuit
• Refrigerant flow issues related to a worn or sticking expansion valve
• Leaks at the valve connection points when the original seals are no longer sealing properly
• Service replacement needs on rear A/C systems for Ford Expedition and Lincoln Navigator

Installation Notes and Tips

Verify the vehicle’s rear HVAC layout, refrigerant type, and connection style before installation. Replace the valve only after the system has been properly evacuated and inspected for contamination, and confirm the O-ring sealing surfaces are clean and undamaged. This part is listed for rear position applications only: Fits 2007-2017 Ford Expedition, rear; Fits 2007-2015 Lincoln Navigator, rear; Fits 2017 Lincoln Navigator, rear. Four Seasons 39373 should be matched to the exact OE-style connection layout and refrigerant specification for the vehicle.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, making it a direct-fit service part for the specified rear A/C applications. The Four Seasons 39373 is built as an OE-style replacement for rear HVAC repair on Ford Expedition and Lincoln Navigator models.