Bmw e46 serpentine belt diagram - 320D BMW Cars & Trucks

SOURCE: DIAGRAM FOR 2003 BMW 330i SERPENTINE BELT

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SOURCE: need serpentine belt diagram for 1994 bmw 325i

Below are diagrams for both the M44 and the M50 engines. On the M44, you may need to hold the tensioner in the retracted position with a drill bit or hex tool through the hole in the front of the tensioner. The belt tensioner is automatic so no tightening is necessary. Best of luck!
Greg

M44







M50

SOURCE: diagram for serpentine belt for 2002 BMW 525i

An image of a serpentine belt, hope this will help you,
Eitan.