This is a used cast iron thermostat cover that fits different engines in Ford's FE engine family. The cover includes a threaded port for a distributor vacuum control valve. It appears to be an aftermarket replacement cover because there are no Ford markings. The only markings I can see are "BF" and what appears to be a logo, but I can't make out the logo.This part is in excellent condition. It has been blasted and primed to make it ready for fresh paint. The threads for the distributor vacuum control valve are in good shape. The opening for the thermostat measures about 2 1/4" in diameter.