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: 5119 Fits:01-06 Chevrolet Avalanche 2500 8.1L V8 01-06 Chevrolet Suburban 2500 8.1L V8 01-06 GMC Yukon XL 2500 8.1L V8 01-07 Chevrolet Silverado 2500HD 8.1L V8 - 2001-2007 Classic Only01-07 Chevrolet Silverado 3500HD 8.1L V8 - 2001-2007 Classic Only01-07 GMC Sierra 2500HD 8.1L V8 - 2001-2007 Classic Only01-07 GMC Sierra 3500HD 8.1L V8 - 2001-2007 Classic OnlyDownload Volant Installation Guides: Volant Installation File #1