Four Seasons 39633 A/C Expansion Valve

Four Seasons 39633 Expansion Valve

Four Seasons 39633 is a block-type A/C expansion valve for R134A systems, built with an aluminum body and O-ring connections for serviceable sealing. It is an OE-style replacement that meets or exceeds OEM requirements and is listed for Hyundai Ioniq and Kia Niro applications.

Key Features

• Brand: Four Seasons Expansion Valve
• Part number: 39633
• Block type A/C expansion valve for R134A refrigerant
• Aluminum construction
• Female suction and liquid fittings with O-ring style connections
• 2 mounting holes
• Super heat setting: 6.9
• 1.5 tonnage rating
• Without solenoid; switch not included
• Meets or exceeds OEM specifications

Product Details

The Four Seasons Expansion Valve line focuses on precise refrigerant metering for automotive HVAC systems. This Four Seasons 39633 valve regulates liquid refrigerant flow into the evaporator, helping maintain proper system balance in R134A air conditioning setups. It uses female No. 10 suction inlet and outlet threads, a female No. 6 liquid inlet thread, and a female No. 10 liquid outlet thread, all with O-ring style sealing surfaces.

Cross-reference part numbers for this application include UAC EX10614C and 97626G2000. This part number 39633 is listed for 2017-2020 Kia Niro, 2019-2020 Kia Niro EV, and Hyundai Ioniq coverage across the confirmed model years.

Common Issues This Part Can Address

• Incorrect refrigerant flow through the evaporator
• Weak or inconsistent cabin cooling
• Improper superheat control in the A/C circuit
• Expansion valve restriction or internal wear
• HVAC performance loss after A/C service or component replacement

Installation Notes

• Verify refrigerant type before installation; this valve is specified for R134A systems.
• Confirm fitting sizes and O-ring sealing surfaces match the vehicle’s original hardware.
• Inspect the A/C system for contamination, leaks, and compressor condition before replacing the valve.
• Follow the vehicle service procedure for evacuation, recharge, and leak testing after installation.
• Fits 2020 Hyundai Ioniq, N/A, to 10/2019; Expansion Valve.
• Fits 2018-2019 Hyundai Ioniq, N/A, w/o Heat Pump; Expansion Valve.
• Fits 2017-2019 Hyundai Ioniq, N/A, Expansion Valve.
• Fits 2017 Hyundai Ioniq, N/A, w/o Heat Pump; From 1/2017; Expansion Valve.
• Fits 2017-2020 Kia Niro, N/A, Expansion Valve.
• Fits 2019-2020 Kia Niro EV, N/A, Expansion Valve.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, with application coverage for Hyundai Ioniq and Kia Niro platforms. Part number 39633 is built for direct-fit HVAC service where the original valve specification calls for a block-type R134A expansion valve.