The aggrevating thing about these internet parts suppliers is most of the time they use their own part number instead of OEM.
Sears goes by OEM part numbers. Look up the original part number and then cross reference it to a generic supplier like Gemline is what I would do. Their book tells the part number they list for replacement and gives the cut in and cut out. Look on the original part and post the FSP number and I will look in the book, maybe we can see what cut in and cut out is.