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Old 11-19-2012, 05:38 AM
boramkiv's Avatar
boramkiv boramkiv is offline
Propellers Up Front
Location: Chesapeake, VA
 
Join Date: Jan 2011
Posts: 1,814
Mein Auto: Some Bavarian car outside
You are probably referring to number 14 in the link below.
It's called an intake muffler or silencer and is part of the fuel
preparation system.

http://www.realoem.com/bmw/showparts...29&hg=13&fg=20

Driving without it will not hurt anything. Very minute
difference in the way the air is drawn in without it. You
won't even notice it's not there.
Good luck
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