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Four Seasons 39605 A/C Expansion Valve - Rear
| Brand | Four Seasons 39605 |
|---|---|
| Position | Rear |
| 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. 10 |
| Liquid Outlet Style | O-Ring |
| Liquid Outlet Thread Type | Not Threaded |
| Liquid Outlet Type | O-Ring |
| Lqd Out Size IN | 0.61 |
| Lqd Out Size MM | 15.5 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mounting Hole Quantity | 2 |
| Refrigerant Type | R134A |
| Style | w/ Solenoid |
| Suc In Size IN | 0.72 |
| Suc In Size MM | 18.3 |
| Suc Out Size IN | 0.72 |
| Suc Out Size MM | 18.3 |
| 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 | 2.500 |
| Switch Included? | Not Included |
| Tonnage | 1.500 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Lexus and Toyota · 37 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for a confident fit.
Aluminum block type. Lightweight construction with O-ring connections for secure sealing.
Solenoid style. Built for precise refrigerant flow control in the A/C system.
Cross-references Four Seasons 39605, UAC EX10350C and 217620 for the same application. See all 6.
Four Seasons 39605 Rear A/C Expansion Valve
Four Seasons 39605 is a block-type A/C expansion valve for rear HVAC systems that use R134A refrigerant. Built from aluminum and configured with O-ring connections, it helps regulate refrigerant flow for Lexus GX460, Lexus LX570, and Toyota Land Cruiser rear air conditioning applications.
Key Features
- Four Seasons Expansion Valve, part number 39605
- Block-type design with solenoid style
- Aluminum construction and aluminum finish
- R134A refrigerant type
- Rear HVAC application with 2 mounting holes
- Female O-ring inlet and outlet connections
- Meets or exceeds OEM specifications
- Super heat setting: 2.500
- Tonnage: 1.500
Product Details
The Four Seasons Expansion Valve line focuses on refrigerant metering components for automotive air conditioning systems. Part number 39605 is a rear A/C expansion valve with female suction and liquid fittings, O-ring sealing surfaces, and non-threaded connections for service on factory-style HVAC layouts. It is listed for 2010-2020 Lexus GX460 rear expansion valve applications, 2008-2011 and 2013-2020 Lexus LX570 rear expansion valve applications, and 2008-2011 and 2013-2020 Toyota Land Cruiser rear expansion valve applications. This part cross-references UAC EX10350C for the same application.
Common Problems This Part Can Address
- Rear A/C vent air that is not cooling properly
- Refrigerant flow control issues in the HVAC system
- Uneven cooling performance between front and rear zones
- Expansion valve restriction or sticking from wear and contamination
- Service replacement for a leaking or inefficient rear metering valve
Installation Notes and Tips
Verify the vehicle’s rear HVAC layout, refrigerant type, and fitting style before installation. Replace the valve only after the system has been properly evacuated and inspected for contamination, leaks, and compressor debris. Confirm O-ring condition and sealing surfaces during service, and match the part to the rear position listed for Lexus GX460, Lexus LX570, or Toyota Land Cruiser applications. Part number 39605 should be installed according to factory service procedures for the specific vehicle.
Quality Assurance
Four Seasons lists this expansion valve as meeting or exceeding OEM requirements for the specified applications. The aluminum construction and OE-style connection layout support factory-fit replacement on compatible rear A/C systems.
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2020 | Lexus | GX460 | — | Rear | Expansion Valve |
| 2020 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2020 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2019 | Lexus | GX460 | — | Rear | Expansion Valve |
| 2019 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2019 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2018 | Lexus | GX460 | — | Rear | Expansion Valve |
| 2018 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2018 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2017 | Lexus | GX460 | — | Rear | Expansion Valve |
| 2017 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2017 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2016 | Lexus | GX460 | — | Rear | Expansion Valve |
| 2016 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2016 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2015 | Lexus | GX460 | — | Rear | Expansion Valve |
| 2015 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2015 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2014 | Lexus | GX460 | — | Rear | Expansion Valve |
| 2014 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2014 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2013 | Lexus | GX460 | — | Rear | Expansion Valve |
| 2013 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2013 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2012 | Lexus | GX460 | — | Rear | Expansion Valve |
| 2011 | Lexus | GX460 | Base | Rear | Expansion Valve |
| 2011 | Lexus | GX460 | Premium | Rear | Expansion Valve |
| 2011 | Lexus | GX460 | Ultra Premium | Rear | Expansion Valve |
| 2011 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2011 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2010 | Lexus | GX460 | — | Rear | Expansion Valve |
| 2010 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2010 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2009 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2009 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
| 2008 | Lexus | LX570 | — | Rear | Expansion Valve |
| 2008 | Toyota | Land Cruiser | — | Rear | Expansion Valve |
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