13 72 001 Replacing air cleaner element (M54)
WARNING: This page is about a different car, the 2005 BMW Z4, 2004 BMW Z4, and 2003 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
E85 only:
Open clips (1).
Open retainers (2) on air-mass flow sensor.
Lift top section (3) of intake filter housing.
E53, E46 and E85:
Remove air cleaner element.
Installation:
Clean top and bottom sections of intake filter housing from inside.
Install new air cleaner element.
Check seal between air-mass flow sensor and air cleaner top section for damage, replace if necessary.
Coat seal with antiseize agent to facilitate joining of air cleaner and throttle body.