Outflows stock by 29 Percent Trucks welectric fan 1500 model only, does not fit 2500 or 3500 Oiled Air Filter Element Banks Ram - Air Intake feeds your ChevyGMC gas engine cooler, denser, outside air for greater power and fuel economy. Its performance is extensively tested and validated in the computer, using Computational Fluid Dynamics software... on the flowbench... and later, on the vehicle. Let the others build and ship Ram - Air's performance is proven, again and again Note This product does not fit 2500 or 3500 pickup trucks. Banks Ram - Air for ChevyGMC V8's. US Patent 10,138,851 B2