They are a bitch to change, but it can be done with patience and a good back. That said, I have never changed mine. It's one of those things that really doesn't need to be done IMO. It's a money maker. My cabin air is fine.
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2018 M550ix|Carbon Black|Dinan Modifications|2003 540i|Jet Black|M-Sport|2021 X5 Mineral White
Prior BMW's: 1987 325e|1993 740i|1998 740il|2001 530i|2002 745li|2007 750li|2006 750li|2001 530i|2012 535xi|
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