1997-2012 Porsche 911/Boxster/Cayman AC Expansion Valve 99657392901
Porsche Part #: 996-573-929-01 (99657392901)
Actual photo
The exact part you’ll receive — not a stock photo.
$20.49
Used
Donor2000 Porsche BOXSTER · 2.7L
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Only 2 in stock — no guaranteed restock
Genuine OEM Used
SKU: 654089
Donor Vehicle: 2000 Porsche BOXSTER · 2.7L
2 photos
$20.49
30-Day Returns
Genuine OEM Used
SKU: 693568
Donor Vehicle: 2007 Porsche BOXSTER · 2.7L
2 photos
$21.49
30-Day Returns
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Porsche AC expansion valve, OEM number 99657392901, now superseding 99657392900. This used genuine part meters refrigerant flow to the evaporator—a sticking or clogged valve often results in poor AC cooling or intermittent warmth. Found on 911, Boxster, and Cayman models with flat-6 engines, from the 2.5L naturally aspirated to the 3.6L turbo. When the valve fails, the system may hiss or fail to maintain consistent cabin temperature.
Specifications
| Fits Vehicle Model | 911, Boxster, Cayman |
| Fits Vehicle Make | Porsche |
| Porsche Part No | 996-573-929-01 (99657392901) |
| Compatible OEM Part No | 996-573-929-00 |
| Category | Air Conditioning |
Compatible Vehicles
Fits 130 vehicle configurations across 1 make, 1997-2012.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 130 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2000 | Porsche | 911 | Carrera 4 Convertible | 3.4L | |
| 2005 | Porsche | 911 | Carrera 4S Coupe | 3.6L | |
| 2007 | Porsche | 911 | GT3 RS Coupe | 3.6L | |
| 2001 | Porsche | 911 | Carrera 4 Convertible | 3.4L | |
| 2007 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 2007 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 2007 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2004 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | |
| 2006 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2000 | Porsche | 911 | Carrera 4 Coupe | 3.4L | |
| 2007 | Porsche | 911 | Carrera 4 Coupe | 3.6L | |
| 2008 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 2006 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 2001 | Porsche | 911 | Carrera 4 Coupe | 3.4L | |
| 2003 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | |
| 2008 | Porsche | 911 | GT3 RS Coupe | 3.6L | |
| 2008 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 2000 | Porsche | 911 | Carrera Coupe | 3.4L | |
| 2002 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | |
| 2008 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2000 | Porsche | 911 | Carrera Convertible | 3.4L | |
| 2008 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | |
| 2008 | Porsche | 911 | Carrera 4 Coupe | 3.6L | |
| 2007 | Porsche | 911 | Carrera S Coupe | 3.8L | |
| 2005 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2003 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 1999 | Porsche | 911 | Carrera 4 Coupe | 3.4L | |
| 2005 | Porsche | 911 | Carrera S Coupe | 3.8L | |
| 2011 | Porsche | 911 | GT3 RS Coupe | 3.8L | |
| 2008 | Porsche | 911 | Carrera 4S Coupe | 3.8L | |
| 2004 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 2005 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | |
| 2004 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2006 | Porsche | 911 | Carrera S Convertible | 3.8L | |
| 2007 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2008 | Porsche | 911 | Carrera 4S Convertible | 3.8L | |
| 2004 | Porsche | 911 | Turbo Convertible | 3.6L Turbo | |
| 1999 | Porsche | 911 | Carrera Coupe | 3.4L | |
| 2008 | Porsche | 911 | Turbo Convertible | 3.6L Turbo | |
| 2008 | Porsche | 911 | GT3 Coupe | 3.6L | |
| 2006 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 2008 | Porsche | 911 | Carrera S Convertible | 3.8L | |
| 2001 | Porsche | 911 | Carrera Coupe | 3.4L | |
| 2006 | Porsche | 911 | Carrera 4 Coupe | 3.6L | |
| 2001 | Porsche | 911 | Carrera Convertible | 3.4L | |
| 2011 | Porsche | Cayman | S Hatchback | 3.4L | |
| 2012 | Porsche | Cayman | R Hatchback | 3.4L | |
| 2012 | Porsche | Cayman | S Hatchback | 3.4L | |
| 1999 | Porsche | Boxster | Convertible | 2.5L | |
| 2007 | Porsche | 911 | Targa 4S | 3.8L | |
| 2002 | Porsche | 911 | Targa | 3.6L | |
| 2008 | Porsche | 911 | Targa 4S | 3.8L | |
| 1998 | Porsche | 911 | Targa | 3.6L | |
| 2007 | Porsche | 911 | Targa 4 | 3.6L | |
| 2008 | Porsche | 911 | Targa 4 | 3.6L | |
| 2005 | Porsche | 911 | Turbo S Coupe | 3.6L Turbo | |
| 2003 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2008 | Porsche | Cayman | Hatchback | 2.7L | |
| 2008 | Porsche | Cayman | S Hatchback | 3.4L | |
| 2008 | Porsche | Boxster | RS 60 Spyder Convertible | 3.4L | |
| 2004 | Porsche | Boxster | Convertible | 2.7L | |
| 2009 | Porsche | Cayman | S Hatchback | 3.4L | |
| 2007 | Porsche | Cayman | Hatchback | 2.7L | |
| 2007 | Porsche | Boxster | Convertible | 2.7L | |
| 2004 | Porsche | Boxster | S Convertible | 3.2L | |
| 2008 | Porsche | Boxster | Convertible | 2.7L | |
| 2008 | Porsche | Boxster | S Convertible | 3.4L | |
| 2005 | Porsche | Boxster | S Convertible | 3.2L | |
| 2009 | Porsche | Cayman | Hatchback | 2.9L | |
| 2010 | Porsche | Cayman | Hatchback | 2.9L | |
| 2010 | Porsche | Cayman | S Hatchback | 3.4L | |
| 2012 | Porsche | Cayman | Hatchback | 2.9L | |
| 2011 | Porsche | Cayman | Hatchback | 2.9L | |
| 2007 | Porsche | Cayman | S Hatchback | 3.4L | |
| 2006 | Porsche | Boxster | Convertible | 2.7L | |
| 2003 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 1998 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 2001 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 2000 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 2001 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 2000 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 2002 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 1998 | Porsche | 911 | Carrera 4S Coupe | 3.6L | |
| 2006 | Porsche | Boxster | S Convertible | 3.2L | |
| 1998 | Porsche | 911 | Carrera 4 Coupe | 3.6L | |
| 1997 | Porsche | Boxster | Convertible | 2.5L | |
| 2002 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 1998 | Porsche | Boxster | Convertible | 2.5L | |
| 1998 | Porsche | 911 | Carrera S Coupe | 3.6L | |
| 2003 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 2005 | Porsche | Boxster | Convertible | 2.7L | |
| 2006 | Porsche | Cayman | S Hatchback | 3.4L | |
| 2007 | Porsche | Boxster | S Convertible | 3.4L | |
| 1998 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 2011 | Porsche | 911 | GT3 RS 4.0 Coupe | 4.0L | |
| 2004 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2002 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2002 | Porsche | 911 | Carrera 4S Coupe | 3.6L | |
| 2005 | Porsche | 911 | GT3 Coupe | 3.6L | |
| 2007 | Porsche | 911 | Carrera 4S Coupe | 3.8L | |
| 1999 | Porsche | 911 | Carrera Convertible | 3.4L | |
| 2011 | Porsche | 911 | GT3 Coupe | 3.8L | |
| 2003 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 1999 | Porsche | 911 | Carrera 4 Convertible | 3.4L | |
| 2007 | Porsche | 911 | Carrera S Convertible | 3.8L | |
| 2004 | Porsche | 911 | Coupe | 3.6L | |
| 2005 | Porsche | 911 | Turbo S Convertible | 3.6L Turbo | |
| 2002 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 2004 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 2004 | Porsche | 911 | Carrera 4S Coupe | 3.6L | |
| 2005 | Porsche | 911 | Carrera 4S Convertible | 3.6L | |
| 2010 | Porsche | 911 | GT3 Coupe | 3.8L | |
| 2007 | Porsche | 911 | Carrera 4S Convertible | 3.8L | |
| 2003 | Porsche | 911 | Carrera 4S Coupe | 3.6L | |
| 2006 | Porsche | 911 | Carrera S Coupe | 3.8L | |
| 2005 | Porsche | 911 | Turbo Convertible | 3.6L Turbo | |
| 2003 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2002 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2005 | Porsche | 911 | Carrera S Convertible | 3.8L | |
| 2002 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 2008 | Porsche | 911 | Carrera S Coupe | 3.8L | |
| 2005 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2005 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 2006 | Porsche | 911 | Carrera 4S Coupe | 3.8L | |
| 2006 | Porsche | 911 | Carrera 4S Convertible | 3.8L | |
| 2004 | Porsche | 911 | Carrera 4S Convertible | 3.6L | |
| 2001 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2007 | Porsche | 911 | GT3 Coupe | 3.6L | |
| 2004 | Porsche | 911 | GT3 Coupe | 3.6L | |
| 2008 | Porsche | 911 | Turbo Coupe | 3.6L Turbo |