WARNING: This page is about a different car, the 2016 BMW Z4, 2015 BMW Z4, and 2014 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
(Test probe) For recording compression testers 11 0 221 and 11 0 160/engine: M21, M41, M47, M51, M57, M57T2