Banks Ram-Air Intake feeds your 6.7L Power Stroke engine cooler, denser, outside air for greater power and fuel economy. Unlike the OEM airbox with its harsh bends and internal baffles, the Ram-Air's streamlined and optimized shape maintains air velocity and increases air density. Experience the benefits of greater flow, performance, and sound over stock. Its performance is extensively tested using Computational Fluid Dynamics software, validated on the flow bench, and proven on the vehicle in the real world.