Hi gurman ....if you enter your last 7 digits of the chassis number into realoem , you will see the following info relating to your car :
http://www.realoem.com/bmw/select.do...&kind=P&arch=0
e.g. produced april 1990 , 3.6 litre RHD etc ,
and can continue through the menus to discover part numbers etc .
Also , you can ask your friendly dealer to print off the build / options list relating to your vehicle to discover exactly what each of those codes relate to .