Four Seasons 39577 A/C Expansion Valve

Four Seasons 39577 Expansion Valve Overview

Four Seasons 39577 is a block-type A/C expansion valve for R134A systems, built in aluminum for precise refrigerant metering. It is an OE-style replacement that meets or exceeds OEM requirements and is listed for select Fiat 500 and Kia Stinger applications.

The Four Seasons Expansion Valve line focuses on accurate refrigerant control at the evaporator inlet. This 39577 valve uses sealing-washer connections, a 1-ton rating, and a 5.0 superheat setting to support stable A/C performance in the correct vehicle-specific system.

• Brand: Four Seasons Expansion Valve
• Part number: 39577
• Block-type A/C expansion valve
• Aluminum construction and aluminum finish
• R134A refrigerant type
• Female suction and liquid fittings with sealing-washer style connections
• Meets or exceeds OEM specifications
• Style: w/o solenoid
• Vehicle applications include 2013-2014 Fiat 500, 2015-2019 Fiat 500 w/ R1234yf, and 2022 Kia Stinger

Application Details

Use Four Seasons 39577 when replacing a failed expansion valve in the listed Fiat 500 and Kia Stinger HVAC systems. This part cross-references UAC EX9767C for the same application. The part number 39577 is also referenced under interchange numbers used for the same OE-style fitment.

What This Part Helps Address

• Inconsistent evaporator refrigerant flow
• Warm air from the vents caused by poor metering
• Erratic A/C outlet temperatures
• System performance issues tied to a worn or restricted expansion valve
• Fitment-specific replacement needs for Fiat 500 and Kia Stinger HVAC service

Installation Notes

Confirm refrigerant type, connection style, and OE part match before installation. This valve uses female suction and liquid fittings with sealing-washer interfaces, so the mating surfaces must be clean and properly seated. Verify the vehicle application by year and engine/HVAC configuration before service on the Fiat 500 or Kia Stinger.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. The aluminum construction and OE-style design support direct replacement service for the specified applications.