Air Intake Systems: Notes

The intake air ductwork differs between the E70 and E90. Both vehicles will draw air from behind the kidney grill. On the E70, the air filter housing and silencer is located on top of the engine. On the other hand, the E90 has a filter housing on the passenger side inner fender.

Fig 1: Identifying Air Intake System Components

Courtesy of BMW OF NORTH AMERICA, INC.