Yes, that's right! you would have thought they would at least be consistent with their model numbers, if not with their after market service! i.e. an eight month wait for an exhaust manifold for Monty, our E85 Z4!!! Shameful!!I think Mike was referring to Z numbers
Luckily the replacement was under the repair warranty of the car, they did try a weld repair, but made a pigs ear of it! so I made them wait until BMW produced them again!