Volant 07-07 Chevrolet Silverado 1500 Air IntakeVolant air intake systems utilize a high velocity venturi filter adapter which provides a smooth transition through the MAF sensor into the intake tube for a much needed airflow improvement over the factory rubber tubing and resonator box. Volant's Cool Air box is larger than the factory unit and incorporates a larger opening to collect a higher volume of colder ambient air. The Periscoop uses Volants sealed air filter box and high velocity air intake