Product information updated on 2021-06-26 Manufactured by RK Sport - Part Number RKS:19018000, 2017-21 Ford F250/350 Superduty Ram Air Hood., Not functional on 2020 Diesel models due to the relocation of the factory air box. Ram-Air Hood by RKSport. Set your Ford F250/F350 Superduty apart and improve performance with this Ram air Hood. This fiberglass ram air hood comes GelCoated in gray, ready for prep and paint. Includes 8 Pieces Vents., RK Sport Ram Air Hoods are ducted to your factory air cleaner location. Add a cold air intake to make them fully functional. On some models you simply need to install a cold air intake or open up the top of your factory air box.