Just make sure the threads are the same ,I have a Richbrook Sharks tooth aerial and had to araldite it to the thread to get it square on also reception is not as good as original.
Just checked with Brabus and the part number is 16995000, it is seperate to the B class kit. However Brabus said that it will not work with the Audio 5 system and only works with the Sat Nav Command APS. I am not sure why.
One more question. Where is the receiver for the remote entry? Is it on the roof antenna too or somewhere else?
BTW, I find some 1.5" antenna similiar to Brabus's if anyone is interested. I just don't know the difference between these three. Google translation didn't help much..
On SharkFinAntenna's website they don't list the B Class! So I emailed them to ask if they can do them. They responded saying unfortunately the base of the antenna on the B class is too big fo their antenna to fit over...