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      11-08-2012, 10:11 PM   #2
Losco
Second Lieutenant
Japan
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Drives: F10 528i M-sport
Join Date: Aug 2008
Location: Japan

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I'd say almost everything, except engine and chassis. Can't make money making & using in-house parts. BMW prolly designs lot of electronic control modules, but they'd be just outsourced and get delivered. little things like actuators, motors, wires are all OEM.