Used Injen intake system. Was on a 2015 228i xDrive convertible. Really loved the way it sounded - lots of induction / turbo sounds. Comes with 2 reusable filters... one of which was practically brand new.

This intake fits the following:
2014-2016 BMW 220i/228i/xDrive (F22) L4-2.0L(t)
2013-2018 BMW 320i/xDrive (F3x) L4-2.0L(t)
2012-2016 BMW 328i/xDrive (F3x) L4-2.0L(t)
2014-2016 BMW 420i/428i/xDrive (F3x) L4-2.0L(t)

These retail for high $400's, so this is a great deal.