Product information updated on 2021-09-17, Manufactured by RK Sport - Part Number RKS:35016050, 2015-19 Sierra 2500/3500 Ram Air Hood. , Ram-Air Hood by RKSport. Set your GMC truck 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.