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Four Seasons 39523 A/C Expansion Valve
| Brand | Four Seasons 39523 |
|---|---|
| Color | Aluminum |
| Description | Expansion Valves |
| Liquid Inlet Fitting Gender | Female |
| Liquid Inlet Fitting Thread Diameter | No. 8 |
| Liquid Inlet Size IN | 0.540 |
| Liquid Inlet Size MM | 13.8 |
| 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/o Solenoid |
| Suc In Size IN | 0.72 |
| Suc In Size MM | 18.3 |
| Suc Out Size IN | 0.710 |
| Suc Out Size MM | 18.000 |
| 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 | -5.000 |
| Switch Included? | Not Included |
| Tonnage | 1 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | BMW · 8 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for a dependable fit.
Aluminum construction. Lightweight material resists corrosion in demanding HVAC service.
Block type design. Provides precise refrigerant flow control without a solenoid.
Cross-references Dynomax 39523, Global Parts Distributors LLC 3411524 and UAC EX9735C for the same application. See all 10.
Four Seasons 39523 Expansion Valve
Four Seasons 39523 is a block-type A/C expansion valve built for R134A systems and engineered for direct replacement service on the BMW Z4. It uses an aluminum body with O-ring inlet and outlet connections for a secure seal in the HVAC refrigerant circuit.
Key Features
- Brand: Four Seasons Expansion Valve line
- Part number: 39523
- Block-type A/C expansion valve for R134A refrigerant
- Aluminum construction with aluminum finish
- Female suction and liquid fittings with O-ring style connections
- Mounting hole quantity: 2
- Style: w/o solenoid
- Meets or exceeds OEM requirements
- Super heat setting: -5.000
- Tonnage: 1
Product Details
The Four Seasons Expansion Valve product line focuses on precise refrigerant flow control in automotive HVAC systems. This 39523 valve regulates refrigerant entering the evaporator, helping maintain proper cooling performance in the air conditioning circuit. It is specified for 2009-2016 BMW Z4 applications and cross-references UAC EX9735C and other listed OE-style numbers for the same application. If you are replacing a BMW Z4 A/C expansion valve, part number 39523 provides the correct block-style configuration with female O-ring ports and no solenoid.
What It Helps Address
- Weak or inconsistent cabin cooling
- Improper refrigerant metering at the evaporator
- A/C performance loss caused by a worn expansion valve
- Refrigerant flow issues in an R134A system
- Seal concerns at O-ring style HVAC connections
Installation Notes
Verify refrigerant type, port sizes, and mounting layout before installation. This valve is configured with female suction and liquid fittings, No. 12 suction inlet and outlet thread diameters, and No. 8 liquid inlet with No. 10 liquid outlet thread diameters. Confirm the vehicle is a 2009-2016 BMW Z4 and match the existing block-type valve layout before service. Proper evacuation, leak checking, and system recharge are required after replacement.
Quality Assurance
This Four Seasons expansion valve meets or exceeds OEM specifications for the listed application. It is built as an OE-style replacement for 2009-2016 BMW Z4 HVAC service and is designed to support accurate refrigerant control in R134A systems.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2016 | BMW | Z4 | N/A | Expansion Valve |
| 2015 | BMW | Z4 | N/A | Expansion Valve |
| 2014 | BMW | Z4 | N/A | Expansion Valve |
| 2013 | BMW | Z4 | N/A | Expansion Valve |
| 2012 | BMW | Z4 | N/A | Expansion Valve |
| 2011 | BMW | Z4 | N/A | Expansion Valve |
| 2010 | BMW | Z4 | N/A | Expansion Valve |
| 2009 | BMW | Z4 | N/A | Expansion Valve |
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