Banks opens up your truck's breathing with a flowbench-developed and dyno-proven Ram-Air Intake System that is 64.6% less restrictive than stock on the 3.5L at 600 CFM. Ram-Air's filter has a huge outlet with deep filter pleats that maximize flow and a complete air filter housing that draws in cooler, denser air to the engine for greater power and fuel economy. US Patent #10,138,851 B2; 50 State Compliant CARB E.O. D-161-103