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 the your BMW toolkit) in order to fit and remove it.
See tools
Also referred to as oil filler cap.
The original pillion footrest rubbers break very easily when...
Set of chrome windscreen panels for replacing the original...
Perfect protection for your cooler which looks nice, made of...