E46Fanatics - View Single Post - M54B30 - 2004 Engine into 2003 330CI - Wiring Question
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Old 11-15-2012, 02:51 PM   #10
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Join Date: Mar 2006
Location: Southern California
Posts: 26,620
My Ride: Lexus
I'm pretty sure his 2003 car and 2004 engine are both MS45. I probably would have used the old harness though. Don't see any reason whatsoever to change it unless the old one was damaged??
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