Before anyone can help, a model number would be needed. Not the serial number, the Model number. Then search that model number on places like sears parts or appliance pro parts. There are many different online suppliers. Too many to list here, but I typically go the sears parts search to obtain a part number then search for the best price elsewhere. Knowing appliance repair, as I do from years of repairing, you may be surprised how much they will cost. Sometimes it is cheaper to replace the appliance instead.