This item is a Heater 5304475598 Retainer Washer, part number unknown, from a Frigidaire Dishwasher.  This item came from a Frigidaire Dishwasher Model FPHD2491KF0, but will fit other models and brands where the Heater part number matches.  Some wear and residue from normal use; fully functional. Does not include Heating Element or heater components.  Listing price includes free shipping, USPS First Class