Didn't mention that in previous message, but you have later BMW models alternator (not e9) that's why OEM wasn't showing any bushings, because genuine e9 alternator have only alloy mount (no gum). When i took off couple months ago genuine old Bosch 55A alternator from 1974 CSI engine, there was no bushings and no even room for them (alternator mount slight pretty tight in the engine alternator support arm).