I don't know the model number of my Kohler Command 12.5

Hello all-
I recently picked up a bobcat walk behind with a kohler command 12.5 engine. It worked fine for a couple months and then it wouldn't start. It felt like it had no compression, so I tore the whole thing down. Now I would like to order a new set of piston rings but I do not know the model number of the engine (no decal anywhere). It's red...
Any help is greatly appreciated.
Mark

I would contact a Bobcat dealer with the units model and serial numbers. They should be able to cross check to give you the engine numbers, as long as it has not been changed.