Issues relating to the standard three-piece crank hub on the N55 S55 N54 engine are widely known, but include the need to ensure the OE crank bolt can't loosen, which is one cause of the crank hub friction plates starting to slip. Machined from T-6061 billet aluminium before being anodised in our trademark finish. The Crank technics capture plate secures the head of the OE crank bolt and prevents it from turning or being able to loosen. To Fit: Alpina B3 BiTurbo E93 2007 - 2010 2979cc 265KW 360HP N54 B30 A Alpina B3 BiTurbo AWD E92 2008 - 2010 2979cc 265KW 360HP N54 B30 A Alpina B3 S BiTurbo AWD E92 2010 - 2013 2979cc 294KW 400HP N54 B30 A Alpina B3 BiTurbo E92 2007 - 2010 2979cc 265KW 360HP N54 B30 A Alpina B3 GT3 E92 2012 2013 2979cc 300KW 408HP N54 B30 A Alpina B3 S.
