This is a new aftermarket replacement for the XJ900 RK Seca Igniter which has been discontinued by Yamaha.
Factory Marking: TID14-19 31A-10 ( If your marking is different than this one be sure to mention the number on the sticker in the checkout notes.
( The original part is show in the photo above)
The new replacement ignition unit larger and will mount differently than the original part. ( See below)
This unit has some improvements over the stock unit: