N54 - Why is there a "hole" ?
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01-20-2013, 11:06 PM
Drives: 16 F80, 12 F25, 06 E90 330i
Join Date: Jan 2008
Location: Nashville, TN
It's used to thread a ring into which is used to support the engine so you could say lower the subframe..it holds the engine up.
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