UPR Billet Oil cap looks better than stock! Customize the look under the hood of your 2015-2017 Ford Mustang V6 GT with this hot new Oil Cap cover from UPR. Made from 6061 Billet Aluminum for a great fit over your factory cap and a factory style engraving. This new style cap matches other underhood offerings that can be bought individually or in packages for a clean consistent look under your hood.