{"product_id":"k-n-filter-universal-rubber-filter-3-flange-4-1-2-base-inch-3-1-2-inch-top-5-3-4-inch-height","title":"K\u0026N Universal Air Filter RU-5111 — 3\" Flange ID x 4.5\" Base OD x 5.75\" H","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout K\u0026amp;N Engineering\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eK\u0026amp;N has been the world's leader in washable, reusable performance air filters since 1969. From the legendary cone filter to complete cold-air intake systems, K\u0026amp;N's cotton-gauze element delivers more airflow than paper while staying serviceable for the life of the vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/0HFxaeFDCKQ\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eK\u0026amp;N Universal Air Filter RU-5111: Versatile Performance\u003c\/h2\u003e\n\u003cp\u003eEnhance your engine's air intake with the K\u0026amp;N Universal Air Filter RU-5111. Designed for a wide array of applications, from racing vehicles to generators and tractors, this filter provides a reliable solution for diverse air intake needs. Its robust construction ensures durability, while its performance-enhancing capabilities make it a popular choice for enthusiasts and professionals alike.\u003c\/p\u003e\n\u003ch3\u003eKey Features and Benefits:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Fitment:\u003c\/strong\u003e Engineered to fit various angles and offset diameters, making it adaptable to numerous setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Attachment:\u003c\/strong\u003e Features a pliable rubber flange that absorbs vibration and ensures a secure connection. The flange can be stretched up to 1\/16 inch for a precise fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWashable and Reusable:\u003c\/strong\u003e This filter is designed to be washed and reused, offering long-term value and reducing waste.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Enhancement:\u003c\/strong\u003e Allows for increased airflow to the engine, potentially improving performance and throttle response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built with high-quality materials to withstand demanding conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe K\u0026amp;N RU-5111 is an excellent choice for anyone seeking a dependable and high-performing universal air filter. Improve your equipment's efficiency and longevity. Find this and other quality K\u0026amp;N products at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular K\u0026amp;N Engineering products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/k-n-custom-racing-assembly-carbon-fiber-air-box-w-o-base-large\" style=\"color:#0066cc;text-decoration:none;\"\u003eK\u0026amp;N Custom Racing Assembly Carbon Fiber Air Box - Large\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/k-n-custom-racing-assembly-carbon-fiber-air-box-large-solid-base-only\" style=\"color:#0066cc;text-decoration:none;\"\u003eK\u0026amp;N Custom Racing Assembly Carbon Fiber Air Box - Large Solid Base\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/k-n-custom-racing-assembly-carbon-fiber-4in-air-box-w-o-base-large\" style=\"color:#0066cc;text-decoration:none;\"\u003eK\u0026amp;N 100-8591 Custom Racing Carbon Fiber Air Box - Large\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/k-n-custom-racing-air-filter-rectangular-carbon-fiber-4in-air-box-w-2-75in-air-horn\" style=\"color:#0066cc;text-decoration:none;\"\u003eK\u0026amp;N 100-8593 Custom Racing Air Filter - Carbon Fiber 4in Air Box w\/ 2.75in Air Horn\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/k-n-ford-gm-dodge-throttle-control-module\" style=\"color:#0066cc;text-decoration:none;\"\u003eK\u0026amp;N 20-1000 Throttle Control Module — Fits Ford, GM, Dodge\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"K\u0026N Universal Air Filter RU-5111 \\u2014 3\\\" Flange ID x 4.5\\\" Base OD x 5.75\\\" H\",\"description\":\"Boost performance with K\u0026N Universal Air Filter RU-5111. Features a 3\\\" flange, washable design, and durable construction. Shop GGCRACING for K\u0026N filters!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"K\u0026N Engineering\"},\"mpn\":\"RU-5111\",\"url\":\"https:\/\/ggcracing.com\/products\/k-n-filter-universal-rubber-filter-3-flange-4-1-2-base-inch-3-1-2-inch-top-5-3-4-inch-height\",\"offers\":{\"@type\":\"Offer\",\"price\":\"49.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/k-n-filter-universal-rubber-filter-3-flange-4-1-2-base-inch-3-1-2-inch-top-5-3-4-inch-height\",\"sku\":\"KNNRU-5111\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Intake\",\"item\":\"https:\/\/ggcracing.com\/collections\/intake\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"K\u0026N Engineering\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=K\u0026N+Engineering\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"K\u0026N Universal Air Filter RU-5111 \\u2014 3\\\" Flange ID x 4.5\\\" Base OD x 5.75\\\" H\",\"item\":\"https:\/\/ggcracing.com\/products\/k-n-filter-universal-rubber-filter-3-flange-4-1-2-base-inch-3-1-2-inch-top-5-3-4-inch-height\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the K\u0026N Universal Air Filter RU-5111 \\u2014 3\\\" Flange ID x 4.5\\\" Base OD x 5.75\\\" H fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for K\u0026N Engineering?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the K\u0026N Universal Air Filter RU-5111 \\u2014 3\\\" Flange ID x 4.5\\\" Base OD x 5.75\\\" H?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Cold air intakes typically install in 30-60 minutes with basic hand tools. No tuning required for most plug-and-play kits.\"}}]}\u003c\/script\u003e","brand":"K\u0026N Engineering","offers":[{"title":"Default Title","offer_id":41457368596564,"sku":"KNNRU-5111","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/662bdebbf46ba126a5f30fdc0739a226.jpg?v=1721701874","url":"https:\/\/ggcracing.com\/products\/k-n-filter-universal-rubber-filter-3-flange-4-1-2-base-inch-3-1-2-inch-top-5-3-4-inch-height","provider":"GGCRACING INC","version":"1.0","type":"link"}