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Four Seasons 39473 A/C Expansion Valve - Front
| Brand | Four Seasons 39473 |
|---|---|
| Position | Front |
| 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 | Captured 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 | Female Insert O-Ring |
| Liquid Outlet Thread Type | Not Threaded |
| Liquid Outlet Type | O-Ring |
| Lqd Out Size IN | 0.540 |
| Lqd Out Size MM | 13.6 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mounting Hole Quantity | 2 |
| O-Ring A Number/Desc | [24608] / Green O-Ring |
| O-Ring B Number/Desc | [24612] / Green O-Ring |
| O-Ring C Number/Desc | [24661] / Green O-Ring |
| O-Ring D Number/Desc | [24681] / Green O-Ring |
| Refrigerant Type | R134A |
| Style | w/o Solenoid |
| Suc In Size IN | 0.770 |
| Suc In Size MM | 19.600 |
| 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 | Female Insert 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 | -8.000 |
| Switch Included? | Not Included |
| Tonnage | 1.5 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Porsche and Audi · 48 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable system service.
Aluminum construction. Lightweight material resists corrosion in demanding HVAC use.
Block type design. Built for precise refrigerant flow control in A/C systems.
Cross-references Four Seasons 39473, Global Parts Distributors LLC 3411571 and UAC EX9755C for the same application. See all 17.
Four Seasons 39473 Expansion Valve Overview
Four Seasons 39473 is a block-type A/C expansion valve for R134A systems. It is built from aluminum and meets or exceeds OEM requirements for direct replacement service on select Audi, Porsche, and related applications.
Use this Four Seasons Expansion Valve line when you need precise refrigerant metering in an automotive HVAC system. The 39473 expansion valve is a fitment-based replacement for vehicles including the Audi Q5, Audi A4, Audi S5, and Porsche Panamera.
Key Features
- Block-type A/C expansion valve for R134A refrigerant systems
- Aluminum construction with aluminum finish
- Female suction and liquid connections with O-ring sealing
- Captured O-ring and female insert O-ring inlet/outlet styles
- Two mounting holes for OE-style installation
- Meets or exceeds OEM specifications
- Supplied without solenoid
- Four Seasons 39473 cross-references UAC EX9755C and Walker Products 189000 for the same application
Product Details
The Four Seasons Expansion Valve brand line focuses on HVAC flow control components that regulate refrigerant entering the evaporator. Part number 39473 uses a block-type design with female No. 12 suction fittings and female No. 8 liquid fittings, along with O-ring sealing surfaces for a secure connection. This configuration supports accurate refrigerant flow control in R134A air conditioning systems used across Audi Q5, Audi A4 Quattro, and Porsche Panamera applications.
Compatible vehicle coverage includes Fits 2009-2015 Audi Q5, N/A; Fits 2015 Audi Q5, Front; Fits 2009-2012 Audi A4, N/A; Fits 2009-2012 Audi A4 Quattro, N/A; and Fits 2010-2016 Porsche Panamera, N/A. Additional coverage includes Fits 2014-2015 Audi SQ5, N/A, Fits 2010-2012 Audi S4, N/A, Fits 2008-2012 Audi S5, N/A, Fits 2008-2011 Audi A5, N/A, Fits 2008-2011 Audi A5 Quattro, N/A, and Fits 2012 Audi S3, N/A.
Common Issues This Part Addresses
- Irregular cabin cooling caused by restricted refrigerant metering
- Warm air from the vents when the A/C system is not controlling flow correctly
- Pressure imbalance in the HVAC circuit related to a worn expansion valve
- Leak concerns at O-ring sealed A/C connections
- Restoration of proper evaporator feed in R134A systems
Installation Notes and Tips
Verify the original valve style, refrigerant type, and fitting layout before installation. Inspect the mating surfaces and replace damaged O-rings as needed to maintain a proper seal. Confirm the vehicle uses the listed block-type configuration and match the suction and liquid port sizes to the OE part before reassembly.
Quality Assurance
Four Seasons 39473 is built to meet or exceed OEM requirements for the listed applications. The Four Seasons Expansion Valve line is used for OE-style HVAC service where accurate refrigerant control and correct fitment are required.
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2016 | Porsche | Panamera | — | — | — | N/A | Expansion Valve |
| 2015 | Audi | Q5 | — | 2.0L | L4 | N/A | Expansion Valve |
| 2015 | Audi | Q5 | — | 3.0L | V6 | Front | Expansion Valve |
| 2015 | Audi | SQ5 | — | — | — | N/A | Expansion Valve |
| 2015 | Porsche | Panamera | — | — | — | N/A | Expansion Valve |
| 2014 | Audi | Q5 | — | — | — | N/A | Expansion Valve |
| 2014 | Audi | SQ5 | — | — | — | N/A | Expansion Valve |
| 2014 | Porsche | Panamera | — | — | — | N/A | Expansion Valve |
| 2013 | Audi | Q5 | — | — | — | N/A | Expansion Valve |
| 2013 | Porsche | Panamera | — | — | — | N/A | Expansion Valve |
| 2012 | Audi | A4 | — | — | — | N/A | Expansion Valve |
| 2012 | Audi | A4 Quattro | — | — | — | N/A | Expansion Valve |
| 2012 | Audi | Q5 | — | 2.0L | L4 | N/A | Expansion Valve |
| 2012 | Audi | Q5 | — | 3.2L | V6 | N/A | Expansion Valve |
| 2012 | Audi | S3 | Hatchback | 2.0L | L4 | N/A | Expansion Valve |
| 2012 | Audi | S4 | Sedan | 3.0L | V6 | N/A | Expansion Valve |
| 2012 | Audi | S5 | Coupe | 4.2L | V8 | N/A | Expansion Valve |
| 2012 | Audi | S5 | Coupe | 3.0L | V6 | N/A | Expansion Valve |
| 2012 | Porsche | Panamera | — | — | — | N/A | Expansion Valve |
| 2011 | Audi | A4 | — | — | — | N/A | Expansion Valve |
| 2011 | Audi | A4 Quattro | — | — | — | N/A | Expansion Valve |
| 2011 | Audi | A5 | — | — | — | N/A | Expansion Valve |
| 2011 | Audi | A5 Quattro | — | — | — | N/A | Expansion Valve |
| 2011 | Audi | Q5 | — | 2.0L | L4 | N/A | Expansion Valve |
| 2011 | Audi | Q5 | — | 3.2L | V6 | N/A | Expansion Valve |
| 2011 | Audi | S4 | — | — | — | N/A | Expansion Valve |
| 2011 | Audi | S5 | — | — | — | N/A | Expansion Valve |
| 2011 | Porsche | Panamera | — | — | — | N/A | Expansion Valve |
| 2010 | Audi | A4 | — | 2.0L | L4 | N/A | Expansion Valve |
| 2010 | Audi | A4 Quattro | — | 2.0L | L4 | N/A | Expansion Valve |
| 2010 | Audi | A5 | — | — | — | N/A | Expansion Valve |
| 2010 | Audi | A5 Quattro | — | — | — | N/A | Expansion Valve |
| 2010 | Audi | Q5 | — | 2.0L | L4 | N/A | Expansion Valve |
| 2010 | Audi | Q5 | — | 3.2L | V6 | N/A | Expansion Valve |
| 2010 | Audi | S4 | — | — | — | N/A | Expansion Valve |
| 2010 | Audi | S5 | — | — | — | N/A | Expansion Valve |
| 2010 | Porsche | Panamera | — | — | — | N/A | Expansion Valve |
| 2009 | Audi | A4 | Sedan | 2.0L | L4 | N/A | Expansion Valve |
| 2009 | Audi | A4 Quattro | Sedan | 2.0L | L4 | N/A | Expansion Valve |
| 2009 | Audi | A4 Quattro | Wagon | 2.0L | L4 | N/A | Expansion Valve |
| 2009 | Audi | A4 Quattro | Sedan | 3.2L | V6 | N/A | Expansion Valve |
| 2009 | Audi | A5 | — | — | — | N/A | Expansion Valve |
| 2009 | Audi | A5 Quattro | — | — | — | N/A | Expansion Valve |
| 2009 | Audi | Q5 | — | — | — | N/A | Expansion Valve |
| 2009 | Audi | S5 | Coupe | 4.2L | V8 | N/A | Expansion Valve |
| 2008 | Audi | A5 | — | — | — | N/A | Expansion Valve |
| 2008 | Audi | A5 Quattro | — | — | — | N/A | Expansion Valve |
| 2008 | Audi | S5 | — | — | — | N/A | Expansion Valve |
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