Bimmerfest - BMW Forums - View Single Post - Cabin Air Filter Choices - OEM, Bosch, NPN
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Old 05-27-2011, 02:32 PM
Supercourse Supercourse is offline
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Location: British Columbia, Canada
Join Date: Feb 2008
Posts: 3,890
Mein Auto: 2004 X3 2.5i
Had an NPN on the X3 a few years ago, and found that odor from 300D's, Rabbit Diesels, etc. ahead of us didn't get toned down at all.
Discarded it fairly quickly.

I deduced at the time that the charcoal impregnation was fake, and resolved not to buy any more cabin filters made in E. Asia

As it was a few years ago, they could be better now through marketplace forces.

The Bosch option should be safe.
I know they use factories in Europe and Japan for sparkplugs - don't know about their filters.

I'm sure we don't expect too much from cabin filters - just that they do what they are supposed to.
I think the O.E. is a Corteco/Freudenberg.
Unlike a few years ago, lots of choices now in X3 cabin filters:
WIX, Filtertech, Mahle, Meyle, Mann, Fram, Hengst, etc.
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