WM 1001IN Important Component Changes For V8 Engines As Of October 2008 (Except Cayenne Tip, Cayenne Man, Cayenne Diesel): Tools
WARNING: This page is about a different car, the 2010 Porsche Cayenne, 2009 Porsche Cayenne, and 2008 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.