Current Cummins N14 Updated Camshafts, application With Cummins timing code IU / 191886 Camshaft will use 191851 Offset Key ** MUST ** verify timing code based off the CPL # which will be supplied from your enigne serial number that you are working with.With this CPL # you will need to refer to (CPL) Cummins Parts List catalogs,and locate your CPL # and the timing code will be listed.