Yes it should mate, any from an e39/e46/x5 should work fine, I may have one in the loft somewhere.

Have a look and see if the car is pre-wired for the cd changer (it should be), there will be a 6pin and a 3 pin plug back there somewhere, it will be plug and play.

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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.