Originally Posted by US///M3
If it's a manufacturing defect,there's no given time or mileage when the part causing the failure will go. Like with the n54 hpfp some were able to last 60k miles on a 07 335i and others cars went through 3 pumps in 20k miles.
I am not talking about every part my friend...... I am referring to parts in the rotating assembly of an engine....... A rod cap not torqued, bearing too tight, wrist pin retainer clip not installed, etc. Parts subjected to reciprocating forces in an engine generally don't stand up long if they are defective, improperly torqued or improperly assembled they show up quickly!