I'd be surprised if it was different to the rover 400 / mgzs one.. But it's not guaranteed to be the same. Would be less of a risk if it were cheaper
https://rimmerbros.com/Item--i-GRID003155
https://rimmerbros.com/Item--i-JEF000080P
Might make finding a second hand one easier though.
One thing I notice is that this one is only for the rover 400 / 45 / Mg ZS and not the 200 /ZR. This makes me think that the ek one will be different from the mb, but again, that's just a hunch.
Would anyone else know for sure?