The RH drive actuator could be useful if someone with a normal (LH vehicle wants add a lock cylinder on the passenger side. I actually bought a used LH one off E-Bay to do that with mine but never got around to it.

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1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)