This listing for a brand new genuine Ford NOS master cylinder cap for the 1965 1966 Ford Mustang. There is a discolored spot on the top as shown. This is conours correct and is Ford part number C5ZZ-2162-B.PLEASE CHECK OUT MY EBAY STORE FOR ADDITIONAL FORD PARTS AND ACCESSORIES. Buyer to pay for shipping. Thank you and happy ebaying. (PT411)