The vendor part number is CE-84T-07. Read title careful to know what you are getting. Catalog decription�. Note 1: These kits include the Screamin Eagle® Big Twin Compensator upgrade. Starting on the 2006 & later Dyna®, 2007-2010 Touring and 2007 & later Softail® models (except FXCW, FXCWC and FXSTSEE3) the compensator spring cup is built in to the alternator rotor.