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Four Seasons 39484 A/C Expansion Valve
| Brand | Four Seasons 39484 |
|---|---|
| Material | Aluminum |
| Color | Aluminum |
| Refrigerant Type | R134a |
| Type | Block type |
| Mounting Hole Quantity | 2 |
| Suction Inlet Fitting Gender | Female |
| Suction Outlet Fitting Gender | Female |
| Suction Inlet Fitting Thread Diameter | No. 12 |
| Suction Outlet Fitting Thread Diameter | No. 12 |
| Suction Inlet Thread Type | Not threaded |
| Suction Outlet Thread Type | Not threaded |
| Liquid Inlet Fitting Gender | Female |
| Liquid Outlet Fitting Gender | Female |
| Liquid Inlet Fitting Thread Diameter | No. 8 |
| Liquid Outlet Fitting Thread Diameter | No. 8 |
| Liquid Inlet Thread Type | Not threaded |
| Liquid Outlet Thread Type | Not threaded |
| Description | Expansion valves |
| Liquid Inlet Size IN | 0.46 |
| Liquid Inlet Size MM | 11.8 |
| Liquid Inlet Style | Sealing washer |
| Liquid Inlet Type | O-ring |
| Liquid Outlet Style | Sealing washer |
| Liquid Outlet Type | O-ring |
| Lqd Out Size IN | 0.46 |
| Lqd Out Size MM | 11.8 |
| Meets / Exceeds OEM? | Yes |
| Style | W/o solenoid |
| Suc In Size IN | 0.700 |
| Suc In Size MM | 17.7 |
| Fits | — |
OE direct replacement. Meets or exceeds OEM requirements for dependable service.
Aluminum construction. Lightweight material helps resist corrosion in HVAC service.
Block type design. Built as an A/C expansion valve for precise refrigerant flow.
Cross-references Four Seasons 39484, Global Parts Distributors LLC 1812013 and Hygrade Tuneup 1634 for the same application. See all 21.
Four Seasons 39484 Expansion Valve Overview
Four Seasons 39484 is a block-type A/C expansion valve for R134A systems. Built from aluminum with O-ring sealing washer connections, it is specified for 1.5 ton applications and a 6.9 super heat setting. This Four Seasons Expansion Valve is a direct-fit HVAC flow restrictor for service work on vehicles that use the listed connection sizes and mounting pattern.
Key Features
- Part number: 39484
- Brand line: Four Seasons Expansion Valve
- Block type A/C expansion valve
- Aluminum construction and aluminum finish
- R134A refrigerant type
- Female suction and liquid inlet/outlet fittings
- Suction ports: No. 12 thread diameter, not threaded
- Liquid ports: No. 8 thread diameter, not threaded
- O-ring sealing washer style on suction and liquid connections
- Mounting hole quantity: 2
- Style: w/o solenoid
- Meets or exceeds OEM requirements
Product Details
Four Seasons 39484 is an A/C expansion valve used to regulate refrigerant flow into the evaporator, helping maintain proper system pressure and cooling performance. The block-style design, female port configuration, and O-ring sealing surfaces make it a practical replacement for service on R134A air conditioning systems. This part number 39484 is listed with a 1.5 ton rating and a 6.9 super heat specification, which are important details when matching the valve to the original HVAC setup. For buyers searching Four Seasons 39484, A/C expansion valve, or Four Seasons Expansion Valve applications, verify port size, mounting layout, and refrigerant type before installation. This part cross-references UAC EX529497C for the same application.
Common Problems This Part Can Address
- Weak or inconsistent cabin cooling
- Incorrect refrigerant metering at the evaporator
- Compressor cycling caused by flow restriction issues
- Leaking or worn O-ring connection points
- HVAC performance loss after A/C service
Installation Notes and Tips
Confirm the system uses R134A refrigerant and a block-type expansion valve before replacement. Match the suction and liquid port sizes, female fitting style, and two-hole mounting pattern to the original component. Replace and lubricate O-rings as needed during service, evacuate the system properly, and recharge to the vehicle manufacturer’s specification. For vehicle-specific searches such as Honda Civic A/C expansion valve replacement or Toyota Camry HVAC expansion valve service, compare the original valve layout to the dimensions listed for Four Seasons 39484.
Quality Assurance
Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. The aluminum construction and OE-style connection design support consistent fit and serviceability in properly matched applications, including common Honda Civic and Toyota Camry HVAC repair searches when the original part number and port configuration align.
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|---|---|---|---|---|
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