{"product_id":"k-n-engineering-ru-5122-universal-rubber-air-filter-3-25-inch-flange","title":"K\u0026N Engineering RU-5122 Universal Rubber Air Filter, 3.25-Inch Flange","description":"K\u0026amp;N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K\u0026amp;N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1\/16 of an inch (1.5mm) to fit in-between sizes. K\u0026amp;N universal air filters are washable and reusable.\nRegardless of the angle or offset diameter of an air intake, there is probably a K\u0026amp;N Universal air filter for your equipment. K\u0026amp;N universal air filters are washable and reusable.\nAssociated products: RC-5106DL Air Filter Wrap, 99-5000 Filter Care Service Kit Aerosol\n\u003cul\u003e\n  \u003cli\u003eUNIVERSAL FITMENT: Designed for use on a variety of applications\u003c\/li\u003e\n  \u003cli\u003eOne Year Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe K\u0026amp;N Engineering RU-5122 Universal Rubber Air Filter is designed for a wide range of automotive, powersports, recreational, and equipment applications. Its universal design accommodates air-intake systems with varying angles and offset diameters, making it a practical choice for custom installations, racing vehicles, generators, snowmobiles, tractors, and other compatible equipment.\u003c\/p\u003e\u003cp\u003eConstructed with a strong, pliable rubber flange, this K\u0026amp;N universal air filter helps absorb vibration while providing a secure connection to the intake tube. The flexible flange can stretch slightly to accommodate minor variations between sizes, supporting a dependable fit where standard filters may not be suitable. The reusable filter design can be cleaned and serviced rather than routinely replaced, helping simplify long-term maintenance.\u003c\/p\u003e\u003cp\u003eThe K\u0026amp;N Engineering RU-5122 features a 3.25-inch flange and is designed for applications requiring a universal rubber air filter configuration. Associated products include the K\u0026amp;N RC-5106DL Air Filter Wrap and 99-5000 Filter Care Service Kit Aerosol. This product is covered by a one-year limited warranty. It is not CARB approved; verify applicable emissions requirements before installation or use. Based on the available fitment data, the RU-5122 is listed for select 2004 and 2005 Ford Crown Victoria applications and select 2004 Mercury Grand Marquis applications.\u003c\/p\u003e\u003ch3\u003eKey Product Specifications and Technical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: K\u0026amp;N Engineering\u003c\/li\u003e\n\u003cli\u003ePart Number: RU-5122\u003c\/li\u003e\n\u003cli\u003eFilter Type: Universal rubber air filter\u003c\/li\u003e\n\u003cli\u003eFlange Size: 3.25 inches\u003c\/li\u003e\n\u003cli\u003eBase Diameter: 5.5 inches\u003c\/li\u003e\n\u003cli\u003eTop Diameter: 4.6875 inches\u003c\/li\u003e\n\u003cli\u003eFilter Height: 8 inches\u003c\/li\u003e\n\u003cli\u003eServiceability: Washable and reusable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOne K\u0026amp;N Engineering RU-5122 universal air filter\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUniversal fitment: Designed for a variety of automotive, racing, powersports, recreational, and equipment applications.\u003c\/li\u003e\n\u003cli\u003eFlexible rubber flange: Helps absorb vibration, provides secure attachment, and accommodates slight fit variations.\u003c\/li\u003e\n\u003cli\u003eWashable and reusable: Can be cleaned and serviced for continued use with the appropriate K\u0026amp;N maintenance products.\u003c\/li\u003e\n\u003cli\u003eApplication versatility: Suitable for compatible intake systems with varying angles and offset diameters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitments:\u003cbr\u003e\n2003 Ford Thunderbird Base\u003cbr\u003e\n2003 Lincoln LS Base\u003cbr\u003e\n2003 Lincoln LS LSE\u003cbr\u003e\n2004 Ford Crown Victoria Base\u003cbr\u003e\n2004 Ford Crown Victoria LWB\u003cbr\u003e\n2004 Ford Crown Victoria LX\u003cbr\u003e\n2004 Ford Crown Victoria LX Sport\u003cbr\u003e\n2004 Ford Crown Victoria S\u003cbr\u003e\n2004 Ford Thunderbird Base\u003cbr\u003e\n2004 Ford Thunderbird Pacific Coast Roadster\u003cbr\u003e\n2004 Lincoln LS Base\u003cbr\u003e\n2004 Mercury Grand Marquis GS\u003cbr\u003e\n2004 Mercury Grand Marquis LS\u003cbr\u003e\n2005 Ford Crown Victoria Base\u003cbr\u003e\n2005 Ford Crown Victoria LWB\u003cbr\u003e\n2005 Ford Crown Victoria LX\u003cbr\u003e\n2005 Ford Crown Victoria LX Sport\u003cbr\u003e\n2005 Ford Crown Victoria S\u003cbr\u003e\n2005 Ford Crown Victoria Special Edition\u003cbr\u003e\n2005 Ford Thunderbird 50th Anniversary Edition\u003cbr\u003e\n2005 Ford Thunderbird Base\u003cbr\u003e\n2005 Lincoln LS Sport\u003cbr\u003e\n2005 Lincoln LS Ultimate\u003cbr\u003e\n2005 Mercury Grand Marquis GS\u003cbr\u003e\n2005 Mercury Grand Marquis GSL\u003cbr\u003e\n2005 Mercury Grand Marquis Limited Edition\u003cbr\u003e\n2005 Mercury Grand Marquis LS\u003cbr\u003e\n2005 Mercury Grand Marquis Ultimate Edition\u003cbr\u003e\n2006 Ford Crown Victoria Base\u003cbr\u003e\n2006 Ford Crown Victoria Fleet\u003cbr\u003e\n2006 Ford Crown Victoria LWB\u003cbr\u003e\n2006 Ford Crown Victoria LX\u003cbr\u003e\n2006 Ford Crown Victoria LX Sport\u003cbr\u003e\n2006 Lincoln LS Sport\u003cbr\u003e\n2006 Mercury Grand Marquis GS\u003cbr\u003e\n2006 Mercury Grand Marquis LS\u003cbr\u003e\n2007 Ford Crown Victoria Base\u003cbr\u003e\n2007 Ford Crown Victoria Fleet\u003cbr\u003e\n2007 Ford Crown Victoria LWB\u003cbr\u003e\n2007 Ford Crown Victoria LX\u003cbr\u003e\n2007 Mercury Grand Marquis GS\u003cbr\u003e\n2007 Mercury Grand Marquis LS\u003cbr\u003e\n2008 Ford Crown Victoria Base\u003cbr\u003e\n2008 Ford Crown Victoria Fleet\u003cbr\u003e\n2008 Ford Crown Victoria LWB\u003cbr\u003e\n2008 Ford Crown Victoria LX\u003cbr\u003e\n2008 Mercury Grand Marquis GS\u003cbr\u003e\n2008 Mercury Grand Marquis LS\u003cbr\u003e\n2009 Ford Crown Victoria Fleet\u003cbr\u003e\n2009 Ford Crown Victoria LWB\u003cbr\u003e\n2009 Ford Crown Victoria LX\u003cbr\u003e\n2009 Mercury Grand Marquis LS\u003cbr\u003e\n2010 Ford Crown Victoria Base\u003cbr\u003e\n2010 Ford Crown Victoria LX\u003cbr\u003e\n2010 Mercury Grand Marquis LS\u003cbr\u003e\n2011 Ford Crown Victoria Base\u003cbr\u003e\n2011 Ford Crown Victoria LX\u003cbr\u003e\n2011 Mercury Grand Marquis LS\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; 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