K&N X-Stream Top Filter Red 11in / 5.125in Neck Flange / 3.5in Height 2009-chevrolet-silverado-1500-esi5291583 air volume and density by

air volume and density by utilizing precise cross-sectional areas that remove restrictions

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opening the exhaust path improving flow dynamics

and deliver a more controlled ride

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K&N X-Stream Top Filter Red 11in / 5.125in Neck Flange / 3.5in Height 2009-chevrolet-silverado-1500-esi5291583 air volume and density byNot only does the K&N XStream add filter area, it actually redirects airflow inside the filter to pull in more air through the side pleats for even greater performance efficiency. Cleanable and reusable, the XStream Air Flow Top filter delivers the best protection available for your engine. Installation Instructions Technical Bulletin Technical Bulletin Washable and reusable Improves Air Flow