Kohler Trip Lever P/N 87220

I am trying to find a cross reference for Kohler P/N 87220, which is a trip lever for a Kohler one-piece toilet. I can't see any P/N on the inside of the tank. I obtained the trip lever P/N from a parts diagram, which is pasted to the underside of the tank lid.

Any help would be greatly appreciated!

Give us the toilet model number which starts with a "K", so we know WHICH trip lever you need.