Volant 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. This model includes a Pro-5 filter which gets reoiled every 10,000 miles and serviced every 50,000 miles with cleaning kit P/N 5100.Details: Includes Pro 5 Filter Cross Link Polyethylene Material Cleanable Reusable High Grade Filter Easy Access Insulated Lid High Temperature Silicon Connectors Stainless Steel Clamps 5 Layer Cotton Gauze Closed Box Air Intake EO Number: D-526-6 Filter Part Number: 5117 Fits:99-06 Chevrolet Silverado 1500 4.3L V6 - 1999-2007 Classic Only99-06 Chevrolet Tahoe 4.3L V6 99-06 GMC Sierra 1500 4.3L V6 - 1999-2007 Classic OnlyDownload Volant Installation Guides: Volant Installation File #1