Guys,
I do not know if this will fit a older E53 X5. There is debate too whether this fits on a newer E70 X5. I do not know the answers to these questions, therefore you should confirm with the local BMW dealer or if someone in the forum knows the answer for sure than please post up.

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Current cars:
03 BMW X5 4.4i NAVI (Dinan software upgrades-tranny and Engine ECU, 4.6 body kit w/ 20's staggered wheels, aluminum running boards, M3 SMG steering wheel, eisenhaus race exhaust, predator angel eyes, 6000k HID fogs, hardwired V1 radar)
06 Honda Odyssey EX-L RES NAVI (4300k HID's)
00 Mercedes S430 SPORT NAVI
08 Honda Accord V6 NAVI sedan (4300k HID's)