1241 | 2017-22 F250/F350 Superduty cowl hood,� Cervini's 4 inch cowl is the perfect addition to your truck. With the added clearance this hood offers, you will be able to run most big turbos with no rubbing, or clearance issues. It features rear screened air vents that help let excess heat escape and cool air in. This cowl was built around the tough and rugged Super Duty platform. We tailored the width and lines of the hood to fit the truck's wide stance and menacing grille. �