1246 | 2015-20 F150 4 inch cowl hood,� With the hard edge lines, and the rugged truck appearance we kept the street truck in mind while creating the ultimate 4 inch Cowl Hood. The fully functioning Cowl allows your engine to breathe easier by increasing performance and looking great doing it! The functional hood features a screened rear exit by the windshield, creating a release of the heat. This hood is a direct bolt-on and utilizes all of the OEM hardware, hinges and latch. �