The exterior of your Mustang looks fast and sleek, why shouldn't it look the same under the hood Dramatically enhance the under - hood appearance with the ROUSHcharged Coil Covers. These sleek ROUSHcharged Coil Covers are made from heavy duty, durable materials to withstand those scorching under hood temperatures. You can change the entire look of your engine bay in 10 minutes or less with a few simple hand tools. Customize the look of your engine bay with the two included sets of black and matte gray ROUSHCHARGED decals.