The rubber intake boot connects the air flow sensor with the throttle body on the E83 X3 3.0i M54. It's after the air filter and mass air meter so any rips or tears on the boot material will allow unfiltered and unmetered air into the engine. And since vacuum and air pressure within the engine are closely managed, any air leak can be a serious problem. Air leaks from a cracked intake boot can cause your X3 to run rough, poor idle, throttle surging, stumbling, hesitations, and misfires. These can be caused by other things but a leak in the intake boot is easy to check and inexpensive to fix!
This boot is made by an OEM supplier to BMW for this part and other rubber hoses and components on your BMW. It comes with a two year warranty.
BMW Fitments:
X3 Series
E83 X3 (2004-2010) > X3 3.0i M54 (2004-2006)
