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rirrgang · 09-08-2019, 09:34 AM

Good morning all. I replaced the two cabin filters yesterday, I do that every year. I am curious as to why there are two filters. I see the how the lower one works but for the life of me I can't figure out what to top one does.
Thanks

09-08-2019, 09:34 AM	#1
rirrgang New Member 4 Rep 29 Posts Drives: 2012 X3 x35i Join Date: Oct 2018 Location: San Jose, Ca. iTrader: (0)	Cabin Filters Good morning all. I replaced the two cabin filters yesterday, I do that every year. I am curious as to why there are two filters. I see the how the lower one works but for the life of me I can't figure out what to top one does. Thanks
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