VTT - BILLET BMW N54/N55/S55 Crank Seal GuardIt is a well known issue on the BMW N54 N55 S55 platforms that your serpentine belt can fail for various reasons, when this happens you have a high chance of the belt getting sucked behind the front damper, and then being pushed past the crank seal into your oil pan. From there it can get sucked into the oil pick up causing total engine failure, even if you do not lose the engine it is a COSTLY repair to remove the sub frame and drop the oil pan to
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