This original BMW ignition switch will directly replace a failed or damaged start/stop button on 2006-2008 3-series sedan/wagon and E92/E93 M3 coupe/convertible (2008). The switch has a black push-button and a pearlescent chrome outer ring.
This part is listed by BMW as BMW part number 61316949913 (61-31-6-949-913) and is described as Genuine BMW Starter/Stop Switch (Perlglanz Chrome).
BMW Fitments:
3 Series
E90 / E91 / E92 / E93 (06-13) > 323i
E90 / E91 / E92 / E93 (06-13) > 325i
E90 / E91 / E92 / E93 (06-13) > 325xi
E90 / E91 / E92 / E93 (06-13) > 328i
E90 / E91 / E92 / E93 (06-13) > 328xi
E90 / E91 / E92 / E93 (06-13) > 330i
E90 / E91 / E92 / E93 (06-13) > 330xi
E90 / E91 / E92 / E93 (06-13) > 335i N54 (07-10)
E90 / E91 / E92 / E93 (06-13) > 335xi N54 (07-10)
E90 / E91 / E92 / E93 (06-13) > M3