3163021 Cummins Diesel ISX Cam Timing Tool Kit Alt Includes 1 Crank Pin (3163020), 1 Four Degree Wedge, 2 Six Degree Wedges, and 1 Seven Degree WedgeExtra 6° wedge is included for [2007-2012] engines with two camshafts.Used for setting the geartrain timing on all Cummins ISX engines (2016-2017)