M54B30?? or M54B25??

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  • Shftr8
    E30 Addict
    • Aug 2014
    • 530

    #1

    M54B30?? or M54B25??

    Ok so can someone shed some light on an engine I have. So the stamping on the block down by the oil pan say 3 0 **** but the little tab on the head gasket says 2.5/2.8. Anyone know why? I thought the stamping meant 3.0L because I know some say 25 for 2.5L or at least that is what I thought. Anyone know for sure.
  • DesertBMW
    E30 Enthusiast
    • Aug 2011
    • 1011

    #2
    same bore so no need to make a different gasket for 3.0L

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