Four Seasons 39658 A/C Expansion Valve - Front

Four Seasons 39658 Expansion Valve

Four Seasons 39658 is a block-type A/C expansion valve built for R134A systems and OE-style service replacement. It uses an aluminum body with sealing-washer connections and a two-hole mounting layout for a direct-fit HVAC repair on select Ford and Lincoln applications.

Key Features

• Brand: Four Seasons Expansion Valve line
• Part number: 39658
• Block-type A/C expansion valve
• Aluminum construction and aluminum finish
• R134A refrigerant type
• Female suction and liquid fittings with sealing washers
• 2 mounting holes
• OE-matching replacement design; meets or exceeds OEM requirements
• Style: w/o solenoid
• Super heat setting: -13.500
• 1.000 tonnage rating

Product Details

The Four Seasons Expansion Valve product line focuses on HVAC flow control components that regulate refrigerant delivery through the evaporator. This Four Seasons 39658 expansion valve is a block-style unit with female inlet and outlet connections, including No. 10 and No. 12 suction thread diameters and No. 6 and No. 8 liquid thread diameters. It is built for R134A systems and is listed as an OE-level replacement for service work on Ford Bronco Sport, Ford Escape, Ford Explorer, Ford Mustang Mach-E, Lincoln Aviator, Lincoln Corsair, and Lincoln Nautilus applications.

This part cross-references A99542 and EX10702C for the same application.

Vehicle Fitment

• Fits 2021-2025 Ford Bronco Sport, N/A, w/ R1234yf; Expansion Valve
• Fits 2020-2025 Ford Escape, N/A, w/ R1234yf; Expansion Valve
• Fits 2020-2025 Ford Explorer, Front, w/ R1234yf; Expansion Valve
• Fits 2021-2025 Ford Mustang Mach-E, N/A, Expansion Valve
• Fits 2020-2025 Lincoln Aviator, Front, w/ R1234yf; Expansion Valve
• Fits 2020-2025 Lincoln Corsair, N/A, w/ R1234yf; Expansion Valve
• Fits 2024-2025 Lincoln Nautilus, N/A, Expansion Valve

Common Repair Symptoms

• Inconsistent cabin cooling
• Restricted refrigerant flow through the evaporator circuit
• Improper A/C pressure balance
• Warm air from the vents during A/C operation
• HVAC performance issues tied to a worn expansion valve

Installation Notes

Verify refrigerant system compatibility, fitting style, and mounting-hole layout before installation. Replace sealing washers as required during service, and confirm the valve orientation matches the vehicle’s HVAC layout. This part is listed for select Ford and Lincoln models, including Ford Explorer and Lincoln Aviator front applications, so match the vehicle notes exactly before assembly.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements for the specified application. Part number 39658 is built as an OE-style HVAC replacement component for service technicians and repair shops working on late-model Ford and Lincoln A/C systems.