Yes, this radio has Sirius support. This is the remanufactured version of the first new gen BM53 radio that had Sirius support.

You will also need to get the Sirius receiver module and Sirius antenna to actually add Sirius to your car.

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2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input