{"product_id":"k-n-engineering-rx-4990-xstream-top-universal-clamp-on-air-filter","title":"K\u0026N Engineering RX-4990 XStream Top Universal Clamp-On Air Filter","description":"K\u0026amp;N XStream Top Universal Air Filters take performance to the next level with the addition of a filter within the filter's top adding more filter area for higher air flow and a longer service interval. The XStream Air Filter provides awesome air flow and outstanding filtration. When racing, in any environment, racers need all the protection and airflow they can get. K\u0026amp;N delivers. All K\u0026amp;N universal air 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 inch (1.5mm) to fit in-between sizes. K\u0026amp;N universal air filters are washable and reusable.\nK\u0026amp;N XStream Top Universal Air Filters take performance to the next level with the addition of a filter within the filter's top adding more filter area for higher air flow and a longer service interval.\nAssociated products: RX-4990DK Air Filter Wrap, RX-4990DL Air Filter Wrap, RX-4990DR Air Filter Wrap, RX-4990DY Air Filter Wrap, 99-5000 Filter Care Service Kit Aerosol\n\u003cul\u003e\n  \u003cli\u003eClamp On Design\u003c\/li\u003e\n  \u003cli\u003eClamp-on design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBrief Description:\u003c\/strong\u003e The K\u0026amp;N Engineering RX-4990 XStream Top Universal Air Filter is designed to increase airflow while providing dependable engine protection in demanding automotive and racing applications. Its XStream top incorporates an additional filter element within the filter lid, increasing the available filter area to support high airflow and extended service intervals. The clamp-on design fits a 3-inch intake flange and is suitable for custom intake systems and select applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Product Specifications \u0026amp; Technical Data:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: K\u0026amp;N Engineering\u003c\/li\u003e\n\u003cli\u003ePart Number: RX-4990\u003c\/li\u003e\n\u003cli\u003eFilter Type: XStream Top universal air filter\u003c\/li\u003e\n\u003cli\u003eInstallation: Clamp-on intake design\u003c\/li\u003e\n\u003cli\u003eFlange Size: 3 inches\u003c\/li\u003e\n\u003cli\u003eBase Diameter: 6 inches\u003c\/li\u003e\n\u003cli\u003eTop Diameter: 5 inches\u003c\/li\u003e\n\u003cli\u003eFilter Height: 5 9\/16 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePerformance and Construction:\u003c\/strong\u003e The RX-4990 uses K\u0026amp;N’s washable and reusable filter media to deliver outstanding filtration while maintaining strong airflow. Its ultra-strong, pliable molded rubber flange absorbs vibration and provides a secure connection to the intake tube. The flange can stretch slightly to accommodate minor fitment differences, helping the filter fit applications that fall between standard intake sizes. This construction is well suited for performance vehicles, custom builds, and racing environments where airflow and filtration are both important.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e This universal air filter is listed for use with the 2005 Ford Focus, including multiple configurations. Verify intake flange size, clearance, and application requirements before installation. The K\u0026amp;N Engineering RX-4990 is not CARB approved, and applicable emissions regulations should be reviewed before use on street-driven vehicles.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat’s Included:\u003c\/strong\u003e One K\u0026amp;N Engineering RX-4990 XStream Top universal clamp-on air filter. Compatible accessories include K\u0026amp;N RX-4990DK, RX-4990DL, RX-4990DR, and RX-4990DY air filter wraps, along with the 99-5000 Filter Care Service Kit Aerosol.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eXStream Top Design: Adds a filter element within the top of the air filter for increased filter area, improved airflow potential, and longer service intervals.\u003c\/li\u003e\n\u003cli\u003eHigh-Flow Filtration: Provides strong airflow and dependable engine protection for performance, custom, and racing applications.\u003c\/li\u003e\n\u003cli\u003eWashable and Reusable: K\u0026amp;N filter media can be cleaned and serviced for continued use, reducing the need for frequent replacement filters.\u003c\/li\u003e\n\u003cli\u003eFlexible Clamp-On Flange: The pliable molded rubber flange absorbs vibration, secures the filter to the intake, and can accommodate slight fitment differences.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitments:\u003cbr\u003e\n2005 Ford Focus ZX3\u003cbr\u003e\n2005 Ford Focus ZX4\u003cbr\u003e\n2005 Ford Focus ZX5\u003cbr\u003e\n2005 Ford Focus ZXW\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"K\u0026N Engineering","offers":[{"title":"Default Title","offer_id":67596240519420,"sku":"RX-4990","price":145.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/378e539b631ecdb004ced018c84d1edf.jpg?v=1790577627","url":"https:\/\/diycustoms.store\/products\/k-n-engineering-rx-4990-xstream-top-universal-clamp-on-air-filter","provider":"diycustoms.store","version":"1.0","type":"link"}