WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, 2001 BMW X5, and 2000 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
63 17 FRONT FOG LAMPS, ADDITIONAL LAMPS E53 TECHNICAL DATA
Bulb, fog lamp
Type
Up to 10/02: H3 12V 55 W from 10/02: H11 12 V 55 W