Add  extra security your N54 engine, crank bolt won't back out leaving you with 24 bent valves!!  Here is an easy, and cost-effective way to do that.  N54 crank hub lock .  

CNC MADE FROM 100% Billet  Aluminum.

Lightweight  only 1.2 Oz's it adds virtually no weight to the crank which is important for balance and vibration.

******  Thanks to the 12 points, it always fits without the need to move the large screw, making installation easier and faster.  *****

*****THE NECESSARY SCREWS FOR THE INSTALLATION ARE INCLUIDED  6X M8 ALLEN SCREWS AND 6 STEEL WASHERS. ***

** USA MADE USUNG DOMESTIC MATERIALS ***