oh BTW the connecting plugs will be different as well
Bosch part numbers are normally 10 numbers long....can you re check??
o.k. done a quick search...this company/organisation/person lists that part number for a 1984s assuming you have left the 6 out of the part number
http://www.laga.se/delinfo.aspx?delindx=42929451&bilkod=3720&delkod=7646 perhaps your car is one that was made earlier than it was registered, do you know what year it was born..not sold, what type of callipers are on the car?
perhaps they have sent the rear instead of the front?
ill try to check tommorrow