Stamping a different number on a part is a 'no cost option' for Bosch. The cost of a dealer part is higher because Bosch sell it to car maker 'X' - who sell it to their stealer network who hold it in stock as 'dead money' until you buy it. That is why it is more expensive. Buying direct from Bosch cuts out two 're-sales'. BMW never made a relay, fuse, globe, injector, starter etc etc in their lives. BUT they sold a few at a handsome proffit!! Bosch know what the spec for the part they built is/was. The Bosch part number will not change - OEM numbers do. For example my local stealer will charge $5 for a 12v 21w globe I buy for $1.50 (actual figures).
Good - Fast - Cheap: Pick any two.
E23 735i; E30 318i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
E21 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
Last edited by BMWFatherFigure; 10-07-2012 at 06:25 PM.