This K&N NextGen cold air intake system is engineered for CHEV. SILVERADO 1500; V8-5.3/6.2L F/I. A high-density polyethylene (HDPE) rotationally molded tube helps increase the volume of airflow by 30.8% to your engine and provides an increase of 19.07 horsepower and 19.37 torque with no tune required. The oversized, conical design allows you to go up to 100,000 miles between filter services under normal highway driving conditions. A custom designed NextGen air box helps protect intake air from the high temperature of your engine bay, and the entire system can typically be installed in less than 60 minutes.