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Four Seasons 39519 A/C Expansion Valve
| Brand | Four Seasons 39519 |
|---|---|
| Color | Aluminum |
| Description | Expansion Valves |
| Liquid Inlet Fitting Gender | Female |
| Liquid Inlet Fitting Thread Diameter | No. 6 |
| Liquid Inlet Size IN | 0.41 |
| Liquid Inlet Size MM | 10.5 |
| 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 | 0.540 |
| Lqd Out Size MM | 13.6 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mounting Hole Quantity | 2 |
| Refrigerant Type | R134A |
| Style | w/o Solenoid |
| Suc In Size IN | 0.650 |
| Suc In Size MM | 16.4 |
| Suc Out Size IN | 0.77 |
| Suc Out Size MM | 19.6 |
| 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 | -7.000 |
| Switch Included? | Not Included |
| Tonnage | 1.5 |
| Type | Block Type |
| Product line | Expansion Valve |
| Fits | Porsche · 59 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 resists corrosion in HVAC service.
Cross-references Four Seasons 39519, Global Parts Distributors LLC 3411775 and 217519 for the same application. See all 10.
Four Seasons 39519 Expansion Valve
The Four Seasons 39519 expansion valve is a block-type A/C flow restrictor built for R134A systems. It is an aluminum, OE-style replacement that meets or exceeds OEM requirements and is specified for Porsche 911, Boxster, and Cayman applications.
Key Features
- Brand: Four Seasons Expansion Valve
- Part number: 39519
- Block type A/C expansion valve for R134A refrigerant
- Aluminum construction with aluminum finish
- O-ring inlet and outlet connections
- Female suction and liquid fittings
- Mounting hole quantity: 2
- Style: w/o solenoid
- Super heat rating: -7.000
- Meets or exceeds OEM specifications
- Cross-reference: Global Parts Distributors LLC 3411775
Product Details
Four Seasons 39519 is part of the Expansion Valve line and is engineered for precise refrigerant metering in Porsche HVAC systems. The valve uses female O-ring connections with No. 10 suction inlet, No. 12 suction outlet, No. 6 liquid inlet, and No. 8 liquid outlet thread diameters, along with 0.41 in (10.5 mm) liquid inlet and 0.540 in (13.6 mm) liquid outlet sizes. Suction inlet and outlet sizes measure 0.650 in (16.4 mm) and 0.77 in (19.6 mm), respectively. This part number 39519 is listed for 1.5 tonnage applications and is built without a solenoid switch.
Compatible fitment includes Fits 1999-2012 Porsche 911, N/A; Fits 1997-2012 Porsche Boxster, N/A; Fits 2006-2012 Porsche Cayman, N/A; and Fits 2013 Porsche 911, N/A, Old Body Style HVAC Heater Core Fitment; Expansion Valve. This part cross-references Global Parts Distributors LLC 3411775 for the same application.
What It Helps Address
- Inconsistent A/C cooling performance in Porsche HVAC systems
- Improper refrigerant flow through the evaporator circuit
- Expansion valve wear or restriction from age and contamination
- Loss of cabin cooling control in R134A-equipped vehicles
- Service replacement needs for Porsche 911, Boxster, and Cayman models
Installation Notes and Tips
- Verify refrigerant type before installation; this valve is specified for R134A systems.
- Confirm the suction and liquid fitting sizes match the vehicle’s original connections.
- Inspect O-rings and sealing surfaces during service to help prevent leaks.
- Follow the vehicle service procedure for evacuation, recharge, and leak checking after replacement.
- Use the fitment notes for the 2013 Porsche 911 old body style HVAC heater core application.
Quality Assurance
Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. The Four Seasons Expansion Valve line is built for direct replacement service in supported Porsche applications, including 911, Boxster, and Cayman models.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2013 | Porsche | 911 | — | 3.8L | H6 | N/A | Old Body Style HVAC Heater Core Fitment; Expansion Valve |
| 2013 | Porsche | 911 | Turbo | 3.8L | H6 | N/A | Old Body Style HVAC Heater Core Fitment; Expansion Valve |
| 2013 | Porsche | 911 | Turbo S | 3.8L | H6 | N/A | Old Body Style HVAC Heater Core Fitment; Expansion Valve |
| 2012 | Porsche | 911 | Carrera 4 | 3.6L | H6 | N/A | Expansion Valve |
| 2012 | Porsche | 911 | Carrera 4S | 3.8L | H6 | N/A | Expansion Valve |
| 2012 | Porsche | 911 | Turbo | 3.8L | H6 | N/A | Expansion Valve |
| 2012 | Porsche | 911 | Carrera S | 3.8L | H6 | N/A | Expansion Valve |
| 2012 | Porsche | 911 | Turbo S | 3.8L | H6 | N/A | Expansion Valve |
| 2012 | Porsche | 911 | Targa 4 | 3.6L | H6 | N/A | Expansion Valve |
| 2012 | Porsche | 911 | Targa 4S | 3.8L | H6 | N/A | Expansion Valve |
| 2012 | Porsche | 911 | Carrera GTS | 3.8L | H6 | N/A | Expansion Valve |
| 2012 | Porsche | 911 | Carrera 4 GTS | 3.8L | H6 | N/A | Expansion Valve |
| 2012 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2012 | Porsche | Cayman | — | — | — | N/A | Expansion Valve |
| 2011 | Porsche | 911 | — | 3.6L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | — | 3.8L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | — | 4.0L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | Carrera | 3.6L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | Carrera 4 | 3.6L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | Carrera 4S | 3.8L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | Turbo | 3.8L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | Carrera S | 3.8L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | Turbo S | 3.8L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | GT3 | 3.8L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | Targa 4 | 3.6L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | 911 | Targa 4S | 3.8L | H6 | N/A | Expansion Valve |
| 2011 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2011 | Porsche | Cayman | — | — | — | N/A | Expansion Valve |
| 2010 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 2010 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2010 | Porsche | Cayman | — | — | — | N/A | Expansion Valve |
| 2009 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 2009 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2009 | Porsche | Cayman | — | — | — | N/A | Expansion Valve |
| 2008 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 2008 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2008 | Porsche | Cayman | — | — | — | N/A | Expansion Valve |
| 2007 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 2007 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2007 | Porsche | Cayman | — | — | — | N/A | Expansion Valve |
| 2006 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 2006 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2006 | Porsche | Cayman | — | — | — | N/A | Expansion Valve |
| 2005 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 2005 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2004 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 2004 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2003 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 2003 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2002 | Porsche | 911 | — | 3.6L | H6 | N/A | Expansion Valve |
| 2002 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2001 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 2001 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 2000 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 2000 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 1999 | Porsche | 911 | — | — | — | N/A | Expansion Valve |
| 1999 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 1998 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
| 1997 | Porsche | Boxster | — | — | — | N/A | Expansion Valve |
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