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Old 12-21-2020, 02:52 PM
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Maruzo Maruzo is offline
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I think it's Mann filter. Looking at the old filter it looks like they all have that plastic lip on top. So maybe i'm superimposing the image of another bmw filter on top of the E53 filters.

Anyway, I do notice much less noise upon startup. Definitely a good thing.

As for the check valve, that sounds like a good idea. I'll have to do some research to see if I can access it easily.
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2003 X5 4.6is Estoril Blue, acquired March 2018
2013 128i M Sport 6 MT Space Grey daily driver
2010 535xi 6 MT Barbera Red
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