I’m assuming you are referring to the drive pulley. We are going to need the model and serial numbers, normally located under the seat. The experienced techs on this forum hate making guesses
Sears don't make the engines or the equipment they go. (It's called private label marketing)
A few details about what you are trying to do would help.
I have several such pullies, but they are all different designs. I do happen have one from a Sears rider I recently pulled an engine from to scrap the chassis.
