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Four Seasons 39343 A/C Expansion Valve - Front
| Brand | Four Seasons 39343 |
|---|---|
| Position | Front |
| 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 | Caputred 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 | Captured 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 |
| O-Ring A Number/Desc | [24611] / Green O-Ring |
| O-Ring B Number/Desc | [24661] / Green O-Ring |
| O-Ring C Number/Desc | [24681] / Green O-Ring |
| Refrigerant Type | R134A |
| Style | w/o 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 | Captured 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 | Captured O-Ring |
| Suction Outlet Thread Type | Not Threaded |
| Suction Outlet Type | O-Ring |
| Super Heat | -0.500 |
| Switch Included? | Not Included |
| Tonnage | 1.500 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Lexus and Toyota · 57 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable service.
Aluminum construction. Lightweight block-type design for efficient refrigerant control.
Captured O-ring fittings. Female connections help create secure, leak-resistant seals.
Cross-references Four Seasons 39343, Global Parts Distributors LLC 3411460 and Global Parts Distributors LLC 3411464 for the same application. See all 21.
Four Seasons 39343 Expansion Valve
The Four Seasons 39343 expansion valve is a block-type A/C flow restrictor built for R134A systems and engineered in aluminum for front HVAC service. It is a direct-fit style replacement for select Lexus and Toyota applications, including Lexus LX570, Toyota Land Cruiser, Toyota Sequoia, Toyota Sienna, Toyota Yaris, and Toyota Yaris R.
Key Features
- Four Seasons Expansion Valve, part number 39343
- Block-type A/C expansion valve for R134A refrigerant systems
- Aluminum construction with aluminum finish
- Front HVAC application with 2 mounting holes
- Female O-ring connections on suction and liquid ports
- Meets or exceeds OEM specifications
- Designed for 1.5 ton A/C service
- Style: w/o solenoid
Product Details
Four Seasons 39343 is an aluminum A/C expansion valve that meters refrigerant flow through the evaporator circuit to help maintain proper cooling performance. The block-style design uses captured O-ring connections, with suction inlet and outlet sized at No. 12 and liquid inlet and outlet sized at No. 6 and No. 10. It is specified for R134A refrigerant and front-position HVAC systems, making it a practical OE-style replacement for Toyota and Lexus vehicles that require this configuration. This part number 39343 also cross-references UAC EX10328C for the same application.
Vehicle Fitment
- Fits 2013-2020 Lexus LX570, front.
- Fits 2008-2011 Lexus LX570, front.
- Fits 2018-2020 Toyota Land Cruiser, front, w/o Cool Box.
- Fits 2013-2017 Toyota Land Cruiser, front.
- Fits 2008-2011 Toyota Land Cruiser, front.
- Fits 2009-2019 Toyota Sequoia, front.
- Fits 2011-2016 Toyota Sienna, front.
- Fits 2013-2018 Toyota Yaris, N/A.
- Fits 2016-2018 Toyota Yaris R, N/A.
- Fits 2011-2014 Lexus GX460, front, compatible with vehicles equipped with Dual Zone A/C.
- Fits 2011 Lexus GX460, front.
Common Repair Uses
- Restores refrigerant metering in a weak or inconsistent A/C system
- Addresses poor cabin cooling in Lexus LX570 and Toyota Land Cruiser applications
- Helps correct A/C performance issues caused by a worn or restricted expansion valve
- Supports repair of front HVAC cooling complaints in Toyota Sequoia and Toyota Sienna models
- Provides the correct service part for R134A systems using a block-type valve
Installation Notes
Verify refrigerant type, port style, and mounting location before installation. This valve uses female O-ring connections and captured O-ring sealing surfaces, so the mating lines and seals must match the vehicle’s original HVAC layout. Confirm the vehicle’s front A/C configuration and, for 2011-2014 Lexus GX460 applications, Dual Zone A/C equipment before ordering. Proper evacuation, leak checking, and system recharge are required after replacement.
Quality Assurance
Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, making it a specification-based replacement for factory-style HVAC service. The 39343 part number is supported by multiple interchange references for select Toyota and Lexus front A/C applications.
| Year | Make | Model | Submodel | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2020 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2020 | Toyota | Land Cruiser | — | — | — | — | Front | w/o Cool Box; Expansion Valve |
| 2019 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2019 | Toyota | Land Cruiser | — | — | — | — | Front | w/o Cool Box; Expansion Valve |
| 2019 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2018 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2018 | Toyota | Land Cruiser | — | — | — | — | Front | w/o Cool Box; Expansion Valve |
| 2018 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2018 | Toyota | Yaris | — | Hatchback | 1.5L | L4 | N/A | Expansion Valve |
| 2018 | Toyota | Yaris R | — | — | — | — | N/A | Expansion Valve |
| 2017 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2017 | Toyota | Land Cruiser | — | — | — | — | Front | Expansion Valve |
| 2017 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2017 | Toyota | Yaris | — | Hatchback | 1.5L | L4 | N/A | Expansion Valve |
| 2017 | Toyota | Yaris R | — | — | — | — | N/A | Expansion Valve |
| 2016 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2016 | Toyota | Land Cruiser | — | — | — | — | Front | Expansion Valve |
| 2016 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2016 | Toyota | Sienna | — | — | — | — | Front | Expansion Valve |
| 2016 | Toyota | Yaris | — | Hatchback | 1.5L | L4 | N/A | Expansion Valve |
| 2016 | Toyota | Yaris R | — | — | — | — | N/A | Expansion Valve |
| 2015 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2015 | Toyota | Land Cruiser | — | — | — | — | Front | Expansion Valve |
| 2015 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2015 | Toyota | Sienna | — | — | — | — | Front | Expansion Valve |
| 2015 | Toyota | Yaris | — | — | — | — | N/A | Expansion Valve |
| 2014 | Lexus | GX460 | — | — | — | — | Front | Compatible with vehicles equipped with Dual Zone A/C.; Expansion Valve |
| 2014 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2014 | Toyota | Land Cruiser | — | — | — | — | Front | Expansion Valve |
| 2014 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2014 | Toyota | Sienna | — | — | — | — | Front | Expansion Valve |
| 2014 | Toyota | Yaris | — | — | — | — | N/A | Expansion Valve |
| 2013 | Lexus | GX460 | — | — | — | — | Front | Compatible with vehicles equipped with Dual Zone A/C.; Expansion Valve |
| 2013 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2013 | Toyota | Land Cruiser | — | — | — | — | Front | Expansion Valve |
| 2013 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2013 | Toyota | Sienna | — | — | — | — | Front | Expansion Valve |
| 2013 | Toyota | Yaris | — | — | — | — | N/A | Expansion Valve |
| 2012 | Lexus | GX460 | — | — | — | — | Front | Compatible with vehicles equipped with Dual Zone A/C.; Expansion Valve |
| 2012 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2012 | Toyota | Sienna | — | — | — | — | Front | Expansion Valve |
| 2011 | Lexus | GX460 | Base | — | — | — | Front | Compatible with vehicles equipped with Dual Zone A/C.; Expansion Valve |
| 2011 | Lexus | GX460 | Premium | — | — | — | Front | Exp Valve; Expansion Valve |
| 2011 | Lexus | GX460 | Premium | — | — | — | Front | Compatible with vehicles equipped with Dual Zone A/C.; Expansion Valve |
| 2011 | Lexus | GX460 | Ultra Premium | — | — | — | Front | Compatible with vehicles equipped with Dual Zone A/C.; Expansion Valve |
| 2011 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2011 | Toyota | Land Cruiser | — | — | — | — | Front | Expansion Valve |
| 2011 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2011 | Toyota | Sienna | — | — | — | — | Front | Expansion Valve |
| 2010 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2010 | Toyota | Land Cruiser | — | — | — | — | Front | Expansion Valve |
| 2010 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2009 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2009 | Toyota | Land Cruiser | — | — | — | — | Front | Expansion Valve |
| 2009 | Toyota | Sequoia | — | — | — | — | Front | Expansion Valve |
| 2008 | Lexus | LX570 | — | — | — | — | Front | Expansion Valve |
| 2008 | Toyota | Land Cruiser | — | — | — | — | Front | Expansion Valve |
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