I agree, in this case especially a good rebuilt is better than a new knock-off. The reman Bosch unit is actually more money than the made in China New Bosch. Flickering light is very likely brushes failing in alternator.

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