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      01-16-2019, 12:50 AM   #27
bluewater328
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Drives: 2011 bluewater 328i LCI sedan
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Quote:
Originally Posted by hassmaschine View Post
it's definitely because it's a different part. The N54 pumps use a plastic housing, which can and does crack and leak - so the pump fails sooner than it should (even if it's also working harder than the N52 pump with a higher thermal load).
If that was truly the leading cause, I wonder why the inlet was never revised to a metal like all the others. Maybe I'm just not understanding the reasoning for the design concept/theory.

Hey, they fixed the large DISA over time :
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