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      12-20-2012, 11:15 PM   #1
Julesandtrish
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Drives: 335d
Join Date: Jan 2010
Location: North Carolina

Posts: 200
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2010 BMW 335D  [5.00]
D engine air filter

Hey guys. I replaced a KN engine air filter with an oem one recently and couldn't remember if the oem filter was to be put in with that crazy white foam piece still in place. It just seems wired to be there. Of all the other bmw's I've owned, I don't remember the white foam piece being attached to the air filter. Thoughts?
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