Bosch Electronic Throttle Body Assembly (OE 99760511501/99760511502)OE Throttle Body Assemblies. The throttle body is an essential part of the inlet air stream of the modern gasoline engine. In combination with the electronic throttle control system, the throttle body assembly is designed to control the amount of fresh air entering the engine. This Part Fits: Year Make Model Submodel 2004 Porsche 911 40th Anniversary Edition 1999 2008 Porsche 911 Carrera 1999,2002 2004,2006 2008 Porsche 911 Carrera 4 2002 2008 Porsche