Manufactured by RK Sport - Part Number RK Sport 29018010, 2019-21 Silverado 1500 Ram Air Hood with Carbon Fiber Blister, , 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. Product information updated on 2022-01-31