This is a new aftermarket replacement for the Ninja ZX-6 (TCI / CDI) which has been discontinued by Kawasaki.
The original ignition unit was made by Mitsubishi and this part replaces Kawaksaki OE#s 21119-1364
The factory part may have had this marking: J4T04271( The original part is shown in the photo to the right)
The new replacement ignition unit is larger and will mount differently than the original part --> See orange part below
This unit has some improvements over the stock unit: