I have just received a replacement refurbed caliper under warranty from the company who supplied my last refurbed caliper. I have quickly noticed a difference though. The new caliper doesn't have the ///M logo engraved in it. I have asked the question and they told me it's exactly the same caliper just without the ///M stamp. He said the exactly same caliper is used in the 540i. Can anybody confirm this is indeed correct?