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Four Seasons 39599 A/C Expansion Valve
| Brand | Four Seasons 39599 |
|---|---|
| Description | Expansion Valves |
| Liquid Inlet Fitting Gender | Female |
| Liquid Inlet Fitting Thread Diameter | No. 6 |
| Liquid Inlet Style | O-Ring |
| Liquid Inlet Thread Type | Not Threaded |
| Liquid Inlet Type | O-Ring |
| Liquid Outlet Fitting Gender | Female |
| Liquid Outlet Fitting Thread Diameter | No. 10 |
| Liquid Outlet Style | O-Ring |
| Liquid Outlet Thread Type | Not Threaded |
| Liquid Outlet Type | O-Ring |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mounting Hole Quantity | 2 |
| Refrigerant Type | R134A |
| Style | w/o Solenoid |
| Suction Inlet Fitting Gender | Female |
| Suction Inlet Fitting Thread Diameter | No. 12 |
| Suction Inlet Style | O-Ring |
| Suction Inlet Thread Type | Not Threaded |
| Suction Inlet Type | O-Ring |
| Suction Outlet Fitting Gender | Female |
| Suction Outlet Fitting Thread Diameter | No. 12 |
| Suction Outlet Style | O-Ring |
| Suction Outlet Thread Type | Not Threaded |
| Suction Outlet Type | O-Ring |
| Super Heat | -6.8 |
| Switch Included? | Not Included |
| Tonnage | 1 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Hyundai · 11 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable fit and function.
Aluminum construction. Lightweight material helps resist corrosion in the A/C system.
Block type design. Provides precise refrigerant flow control in the expansion valve.
Cross-references Four Seasons 39599, UAC EX10667C and 97626D4000 for the same application. See all 6.
Four Seasons 39599 Expansion Valve Overview
The Four Seasons 39599 A/C expansion valve is a block-type HVAC flow restrictor built for R134A systems. It is an aluminum, OE-style replacement that meters refrigerant flow to support proper evaporator performance in the 2018-2019 Hyundai Sonata.
Key Features
- Brand: Four Seasons Expansion Valve
- Part number: 39599
- Block type A/C expansion valve
- Aluminum construction
- Designed for R134A refrigerant systems
- O-ring inlet and outlet connections
- Female suction and liquid fittings
- Meets or exceeds OEM requirements
- Style: w/o solenoid
- Super heat setting: -6.8
- Tonnage: 1
Detailed Product Description
Four Seasons 39599 is an A/C expansion valve for Hyundai Sonata applications that require precise refrigerant metering at the evaporator. This block-type valve uses female O-ring connections on the suction and liquid sides, with No. 12 suction inlet and outlet thread diameters and No. 6 liquid inlet with No. 10 liquid outlet thread diameters. The aluminum body is built for R134A service and is specified without a solenoid. For buyers searching for a 2018 Hyundai Sonata expansion valve or a 2019 Hyundai Sonata A/C expansion valve, part number 39599 provides a direct-fit service replacement for the listed application.
This part cross-references UAC EX10667C for the same application.
Common Repair Symptoms
- Weak or inconsistent cabin cooling
- Incorrect refrigerant flow through the evaporator circuit
- High or unstable A/C outlet temperatures
- Compressor cycling caused by metering issues
- Service replacement for a leaking or restricted expansion valve
Installation Notes and Tips
Verify the vehicle uses an R134A system and confirm the block-type valve layout before installation. Inspect the mating surfaces and O-ring seals, and replace any damaged seals during service. Proper evacuation and recharge procedures are required after A/C component replacement. Confirm fitment for 2018-2019 Hyundai Sonata models before ordering.
Quality Assurance
Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. Part number 39599 is engineered as an OE-style replacement for the specified Hyundai Sonata applications.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2019 | Hyundai | Sonata | — | 2.0L | L4 | N/A | Expansion Valve |
| 2019 | Hyundai | Sonata | — | 2.4L | L4 | N/A | Expansion Valve |
| 2019 | Hyundai | Sonata | — | 1.6L | L4 | N/A | Expansion Valve |
| 2018 | Hyundai | Sonata | Limited | 2.4L | L4 | N/A | Expansion Valve |
| 2018 | Hyundai | Sonata | SE | 2.4L | L4 | N/A | Expansion Valve |
| 2018 | Hyundai | Sonata | Sport | 2.4L | L4 | N/A | Expansion Valve |
| 2018 | Hyundai | Sonata | SEL | 2.4L | L4 | N/A | Expansion Valve |
| 2018 | Hyundai | Sonata | Eco | 1.6L | L4 | N/A | Expansion Valve |
| 2018 | Hyundai | Sonata | Sport 2.0T | 2.0L | L4 | N/A | Expansion Valve |
| 2018 | Hyundai | Sonata | Limited 2.0T | 2.0L | L4 | N/A | Expansion Valve |
| 2018 | Hyundai | Sonata | 2.0T Sport | 2.0L | L4 | N/A | Expansion Valve |
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