Four Seasons 39657 A/C Expansion Valve - Front

Four Seasons 39657 Expansion Valve

Four Seasons 39657 is a block-type A/C expansion valve for R134A systems. It uses an aluminum body with sealing-washer connections and a two-hole mounting pattern for a direct-service HVAC repair on select Ford and Lincoln vehicles.

Key Features

• Brand: Four Seasons Expansion Valve line
• Part number: 39657
• Block-type A/C expansion valve for R134A refrigerant
• Aluminum construction with aluminum finish
• Female suction and liquid fittings with sealing washers
• Mounting hole quantity: 2
• Meets or exceeds OEM specifications
• Style: w/o solenoid
• Super heat setting: -10.0
• Tonnage: 1.000

Product Details

The Four Seasons Expansion Valve line focuses on OE-style HVAC flow control for service repairs and system restoration. Part number 39657 is built for R134A applications and uses female inlet and outlet connections across the suction and liquid sides, with No. 10 and No. 12 suction thread diameters and No. 6 and No. 8 liquid thread diameters. This configuration supports accurate refrigerant metering in the A/C system and is listed as a direct replacement for select Ford Bronco Sport, Ford Escape, Ford Explorer, Lincoln Aviator, and Lincoln Corsair applications. This part cross-references UAC EX10703C for the same application.

Vehicle Fitment

• Fits 2021-2025 Ford Bronco Sport, N/A, w/ R134a; Expansion Valve
• Fits 2020-2025 Ford Escape, N/A, w/ R134a; Expansion Valve
• Fits 2020-2025 Ford Explorer, Front, w/ R134a; Expansion Valve
• Fits 2020-2025 Lincoln Aviator, Front, w/ R134a; Expansion Valve
• Fits 2020-2025 Lincoln Corsair, N/A, w/ R134a; Expansion Valve

Common Repair Uses

• Restores refrigerant metering when the original expansion valve is restricted
• Addresses uneven cabin cooling caused by A/C flow control issues
• Helps correct low-side and high-side pressure imbalance in R134A systems
• Supports repair of A/C performance loss on Ford and Lincoln HVAC systems
• Replaces a worn or contaminated block-style expansion valve

Installation Notes

Verify refrigerant type, port style, and mounting location before installation. This valve is specified for R134A systems and uses sealing-washer connections, so mating surfaces should be clean and undamaged before assembly. Confirm the vehicle application by year, make, model, and position: front or N/A as listed for the exact fitment.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements for the specified applications. The aluminum construction and OE-style configuration support service replacement on compatible Ford and Lincoln HVAC systems.