[anotherchengman]

As some of you have heard, BMW/Mahle have discontinued the charcoal lined (p/n 13727838805) air filters for pre 09/09 M3s. The difference is the spring loaded nub in the intake housing. I have designed a ABS printed replacement to allow you to reuse your existing housing with the later paper filter (p/n 13727838804).

If anyone is interested, I would be happy to make and sell these to support those who do not want to replace their air boxes or run aftermarket filters.