For Chevy Silverado/GMC Sierra GMT900 Silver Coild Air Intake+Heat Shield+Filter Made of High Quality T-6061 Aluminum Material for Strength and Durability Heat Shield to Block Radiant Engine Bay Heat for Improved Combustion Improves Up To 95% Filtration Efficiency Helps Engine to Draw In More and Colder Air Resulting In Better Throttle Response and Higher Explosive Horsepower Output 3.5" Intake Inlet Piping Size