Banks Ram - Air Intake feeds your ChevyGMC gas engine cooler, denser, outside air for greater power and fuel economy. Banks Ram - Air Superiority. (For 4.8L, 5.3L, 6.0L) 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. E.O. is 49 state for 2008, EO lab test documentation PN 41802 for compliance