{"product_id":"k-n-engineering-ru-5171hbk-black-universal-dryflow-air-filter-4-inch-flange","title":"K\u0026N Engineering RU-5171HBK Black Universal Dryflow Air Filter, 4-Inch Flange","description":"K\u0026amp;N Black Universal Air Filters are made from Dryflow oil-free synthetic media. These low restriction clamp-on air filters are designed and manufactured for a wide variety of applications. When dirty they can be easily washed using K\u0026amp;N synthetic air filter cleaner.\nK\u0026amp;N Black Universal Air Filters are made from Dryflow oil-free synthetic media. These low restriction clamp-on air filters are designed for a wide variety of applications. They can be washed using K\u0026amp;N synthetic air filter cleaner.\n\u003cul\u003e\n  \u003cli\u003eOne Year Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe K\u0026amp;N Engineering RU-5171HBK Black Universal Air Filter is a low-restriction, clamp-on filter designed for a wide range of automotive applications. Its tapered round profile features a 4-inch flange inside diameter, an 8-inch base outside diameter, a 6.625-inch top outside diameter, and an 8-inch height, making it suitable for custom intake systems and replacement applications where filtration performance and installation flexibility are required.\u003c\/p\u003e\n\u003cp\u003eBuilt with K\u0026amp;N Dryflow oil-free synthetic media, this reusable air filter provides reliable particle filtration without requiring filter oil. The synthetic media is washable with K\u0026amp;N synthetic air filter cleaner, helping simplify routine maintenance and extend service life. A durable rubber base supports secure clamp-on installation, while the black finish provides a clean appearance for custom and performance-oriented engine compartments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Compatible with select 2006 and 2007 Dodge Ram 2500 and 3500 applications when used with a properly matched intake system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by a one-year limited warranty from K\u0026amp;N Engineering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEmissions Compliance:\u003c\/strong\u003e Not CARB approved; verify applicable emissions requirements before installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Clamp-on design supports installation on compatible intake tubing and airbox components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e One K\u0026amp;N Engineering RU-5171HBK Black Universal Dryflow Air Filter.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDryflow oil-free synthetic media provides low-restriction airflow without requiring filter oil.\u003c\/li\u003e\n\u003cli\u003eWashable and reusable construction supports convenient maintenance with K\u0026amp;N synthetic air filter cleaner.\u003c\/li\u003e\n\u003cli\u003eTapered round design with a 4-inch flange supports custom intake and replacement applications.\u003c\/li\u003e\n\u003cli\u003eDurable rubber base and black finish provide secure installation and a clean appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitments:\u003cbr\u003e\n2003 Dodge Ram 2500 Laramie\u003cbr\u003e\n2003 Dodge Ram 2500 SLT\u003cbr\u003e\n2003 Dodge Ram 2500 ST\u003cbr\u003e\n2003 Dodge Ram 3500 Laramie\u003cbr\u003e\n2003 Dodge Ram 3500 SLT\u003cbr\u003e\n2003 Dodge Ram 3500 ST\u003cbr\u003e\n2004 Dodge Ram 2500 SLT\u003cbr\u003e\n2004 Dodge Ram 2500 ST\u003cbr\u003e\n2004 Dodge Ram 3500 Laramie\u003cbr\u003e\n2004 Dodge Ram 3500 SLT\u003cbr\u003e\n2004 Dodge Ram 3500 ST\u003cbr\u003e\n2005 Dodge Ram 2500 Laramie\u003cbr\u003e\n2005 Dodge Ram 3500 Laramie\u003cbr\u003e\n2005 Dodge Ram 3500 SLT\u003cbr\u003e\n2005 Dodge Ram 3500 ST\u003cbr\u003e\n2006 Dodge Ram 2500 Laramie\u003cbr\u003e\n2006 Dodge Ram 2500 SLT\u003cbr\u003e\n2006 Dodge Ram 2500 Sport\u003cbr\u003e\n2006 Dodge Ram 2500 ST\u003cbr\u003e\n2006 Dodge Ram 2500 TRX4\u003cbr\u003e\n2006 Dodge Ram 3500 Laramie\u003cbr\u003e\n2006 Dodge Ram 3500 SLT\u003cbr\u003e\n2006 Dodge Ram 3500 Sport\u003cbr\u003e\n2006 Dodge Ram 3500 ST\u003cbr\u003e\n2007 Dodge Ram 2500 Laramie\u003cbr\u003e\n2007 Dodge Ram 2500 SLT\u003cbr\u003e\n2007 Dodge Ram 2500 Sport\u003cbr\u003e\n2007 Dodge Ram 2500 ST\u003cbr\u003e\n2007 Dodge Ram 2500 TRX4\u003cbr\u003e\n2007 Dodge Ram 3500 Laramie\u003cbr\u003e\n2007 Dodge Ram 3500 SLT\u003cbr\u003e\n2007 Dodge Ram 3500 Sport\u003cbr\u003e\n2007 Dodge Ram 3500 ST\u003cbr\u003e\n2007 Dodge Ram 3500 TRX4\u003cbr\u003e\n2008 Dodge Ram 2500 Laramie\u003cbr\u003e\n2008 Dodge Ram 2500 SLT\u003cbr\u003e\n2008 Dodge Ram 2500 ST\u003cbr\u003e\n2008 Dodge Ram 2500 SXT\u003cbr\u003e\n2008 Dodge Ram 3500 Laramie\u003cbr\u003e\n2008 Dodge Ram 3500 SLT\u003cbr\u003e\n2008 Dodge Ram 3500 ST\u003cbr\u003e\n2008 Dodge Ram 3500 SXT\u003cbr\u003e\n2009 Dodge Ram 2500 Laramie\u003cbr\u003e\n2009 Dodge Ram 2500 SLT\u003cbr\u003e\n2009 Dodge Ram 2500 ST\u003cbr\u003e\n2009 Dodge Ram 2500 SXT\u003cbr\u003e\n2009 Dodge Ram 3500 Laramie\u003cbr\u003e\n2009 Dodge Ram 3500 SLT\u003cbr\u003e\n2009 Dodge Ram 3500 ST\u003cbr\u003e\n2009 Dodge Ram 3500 SXT\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; 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