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      11-20-2021, 09:40 AM   #3
Derekz4
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Drives: BMW 640i. BMW Z4,01 Bullitt
Join Date: Jun 2019
Location: Southern California

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The belt, 100% yes. Oil leaks will kill a belt and the potential of a broken belt to get sucked into the N55 motor via crank seal is there.
The rest I wouldn’t touch unless there is some pulley noise which any good mechanic can diagnose.

Last edited by Derekz4; 11-20-2021 at 02:26 PM..
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