2017 to 2021 Ford F250/350 Superduty cowl hood Cowl hood's offer a timeless clean and aggressive look that complements the 2017-2021 Super Duty build you are working on. Cervini's 4"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. Cervini's 4" Super Duty Cowl Hood 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 The height of the cowl is 4". Cervini's 2017-2020 Super Duty Cowl hood easily replaces the factory hood using simple hand tools. No Cutting. No Drilling. No shaving. No trimming. No headache! Cervini’s Cowl hood attaches to the factory hinges and latch with NO need for hood pins. The underside of the hood is completely finished underneath and delivers the clean custom show quality appearance that Cervini’s is known for.