There is a drilling in the side of the plug in which you can put a size 3 Allen key or a Torx key T10 (usually found in your BMW toolkit) in order to fit and remove it.
See tools.
Chrome cap II was created for covering the gear oil...
Cylinder head cover left, magnesium
R4V models
Cylinder...
The Wolo Very Loud Horn ensures with its 115 db (measured...