Rocker shafts wear fairly quickly.
The upside to this is that the rocker bushes last longer. It is easier and less expensive to replace the rocker shaft!
Fits all models, but some early cars had the locating post hole in the 1st post. This was replaced by moving it to the 2nd post to stop flex and wear and breakage.
Make sure you still have the oil hole post feed in the right place when converting.
Recommend: 1 x 12A1950 per Mini.
For heavy duty rocker shaft for A series engines, see C-AEG399.