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General: BMW N54, N55, and S55 crank hub part number and design breakdown

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This is something VTT compiled a while ago but I forgot to post it. Tony sent it to me again so here it is.

I asked for impressions on the crank hub differences but they all pretty much seem to be the same design with the same part numbers and minor differences.

It's speculated the S55 gives more often due to heavier damper and mechanical water pump:

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