Applications:BMW VANOS Sprocket Wrench M50 M52 S50 S52:Special wrench designed specifically to turn camshaft sprockets when removing or installing the VANOS variable valve timing unit.BMW 4 & 6 Cylinder Camshaft Alignment / Timing Tools:This tool kit contains all the necessary, engine-specific tools to time the camshafts in BMW M42, M44, M50, M52, M52TU, M54, M56, M50US and S52US engines.Applications:M52TUB25:1997-2001 E46 323i/323Ci/323ti (M52T)1998-2001 E39 523i (M52TU)1998-2001 E36/7 Z3 (M52TU)M52TUB28:1997-2001 E46 328i/328Ci (M52TU)1997-2001 E36/7 Z3 2.8 (M52B28/Z3)1998-2001 E39 528i (M52TU)1998-2001 E38 728i (M52TU)M54B222001-2003 E46 320i/320Ci2001-2003 E39 520i2001-2002 E36 Z3 2.2i2003-2005 E85 Z4 2.2i;2003-2005 E60/E61 520iM54B252001-2002 E36/7 .