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Four Seasons 39566 A/C Expansion Valve
| Brand | Four Seasons 39566 |
|---|---|
| Color | Aluminum |
| Description | Expansion Valves |
| Liquid Inlet Fitting Gender | Female |
| Liquid Inlet Fitting Thread Diameter | No. 6 |
| Liquid Inlet Size IN | 0.4 |
| Liquid Inlet Size MM | 10.15 |
| 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. 8 |
| Liquid Outlet Style | O-Ring |
| Liquid Outlet Thread Type | Not Threaded |
| Liquid Outlet Type | O-Ring |
| Lqd Out Size IN | 0.550 |
| Lqd Out Size MM | 14.000 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mounting Hole Quantity | 2 |
| Refrigerant Type | R134A |
| Style | w/o Solenoid |
| Suc In Size IN | 0.700 |
| Suc In Size MM | 17.8 |
| Suc Out Size IN | 0.72 |
| Suc Out Size MM | 18.3 |
| Suction Inlet Fitting Gender | Female |
| Suction Inlet Fitting Thread Diameter | No. 10 |
| 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 | -10.000 |
| Switch Included? | Not Included |
| Tonnage | 1.5 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Nissan · 8 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable service.
Block type design. Compact A/C expansion valve with O-ring connections.
Aluminum construction. Lightweight material helps resist corrosion in the system.
Cross-references Four Seasons 39566, UAC EX10583C and 217566 for the same application. See all 6.
Four Seasons 39566 Expansion Valve Overview
The Four Seasons 39566 expansion valve is a block-type A/C flow restrictor built for R134A systems. It uses an aluminum body with O-ring inlet and outlet connections, and it meets or exceeds OEM requirements for direct replacement service on select Nissan Maxima and Nissan Altima applications.
Key Features
- Brand: Four Seasons Expansion Valve
- Part number: 39566
- Block-type A/C expansion valve for R134A refrigerant systems
- Aluminum construction with aluminum finish
- O-ring liquid and suction connections
- Female inlet and outlet fittings
- Style: w/o solenoid
- Meets or exceeds OEM specifications
- Designed for 1.5 tonnage applications
Product Details
Four Seasons 39566 is an A/C expansion valve used to regulate refrigerant flow into the evaporator, helping maintain proper system pressure and cooling performance. This block-style valve features No. 6 and No. 8 liquid-side connections, along with No. 10 and No. 12 suction-side connections, all using O-ring sealing surfaces for service on R134A-equipped HVAC systems. It is a direct-fit replacement for select Nissan Maxima and Nissan Altima models, including 2016 Nissan Altima from 8/15, 2017-2018 Nissan Altima, 2017-2020 Nissan Maxima, and 2021 Nissan Maxima to 10/2020. This part cross-references UAC EX10583C for the same application.
What This Part Helps Address
- Weak or inconsistent cabin cooling
- Incorrect refrigerant metering at the evaporator
- Pressure imbalance in the A/C circuit
- Expansion valve restriction or internal wear
- Service replacement for a failed OEM-style valve
Installation Notes and Tips
Verify refrigerant type, port style, and line sizes before installation. This valve uses female, non-threaded O-ring fittings and does not include a solenoid switch. Confirm vehicle build date on 2016 Altima and 2021 Maxima applications, since fitment is limited to the dates shown. Proper evacuation, leak checking, and system recharge are required after A/C service.
Quality Assurance
Four Seasons designs HVAC service parts to meet OEM-level fit and function requirements. Part number 39566 is specified as meeting or exceeding OEM standards for the listed Nissan applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2021 | Nissan | Maxima | N/A | To 10/2020; Expansion Valve |
| 2020 | Nissan | Maxima | N/A | Expansion Valve |
| 2019 | Nissan | Maxima | N/A | Expansion Valve |
| 2018 | Nissan | Altima | N/A | Expansion Valve |
| 2018 | Nissan | Maxima | N/A | Expansion Valve |
| 2017 | Nissan | Altima | N/A | Expansion Valve |
| 2017 | Nissan | Maxima | N/A | Expansion Valve |
| 2016 | Nissan | Altima | N/A | From 8/15; Expansion Valve |
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