{"product_id":"k-n-universal-clamp-on-air-filter-6-inch-flange-tapered-cone-washable-pre-oiled","title":"K\u0026N Universal Clamp-On Air Filter 6-inch Flange Tapered Cone — Washable, Pre-Oiled","description":"\u003cp\u003e\u003cstrong\u003eThe K\u0026amp;N High-Flow Original Universal Clamp-On Air Filter (RU-5173) is a washable, reusable 6\" flange, tapered clamp-on filter engineered to increase airflow and last for the life of your vehicle.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for a broad range of performance and replacement applications, this K\u0026amp;N universal clamp-on filter pairs multi-layer cotton gauze media with a pliable rubber flange to deliver improved airflow without disposable replacements. Its tapered, cone-style shape and 6-inch height make it a versatile choice for custom intake builds, aftermarket throttle bodies, and many OEM housings. Pre-oiled and made in the USA, the RU-5173 targets drivers who want measurable airflow gains, long-term savings, and reduced landfill waste from disposable filters.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter improve engine breathing and performance?\u003c\/h3\u003e\n\u003cp\u003eThe RU-5173 uses four layers of premium cotton gauze treated with a tackifying agent to create a dense but breathable filtration matrix. This configuration lets more air pass through while still trapping contaminants, which can help throttle response and acceleration in many setups. Note: results vary by vehicle and other intake modifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMulti-layer cotton gauze increases volumetric airflow compared to many paper elements\u003c\/li\u003e\n  \u003cli\u003eSpecialized tacking agent helps particulate adhere to the media instead of passing through\u003c\/li\u003e\n  \u003cli\u003eTapered cone shape optimizes flow into narrow throttle bodies or custom intakes\u003c\/li\u003e\n  \u003cli\u003ePre-oiled for immediate, out-of-the-box performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install and maintain a clamp-on K\u0026amp;N air filter?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: slide the pliable rubber flange onto the intake tube or velocity stack and secure with a hose clamp. Because the flange is molded for flexibility, it absorbs vibration and creates a dependable seal across uneven tubes. Maintenance consists of cleaning and re-oiling on a long interval, not frequent replacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSlip flange onto tube and tighten clamp — no special tools required\u003c\/li\u003e\n  \u003cli\u003eClean only as needed (K\u0026amp;N recommends up to 75,000 miles under normal highway conditions)\u003c\/li\u003e\n  \u003cli\u003eUse K\u0026amp;N cleaner and oil for best results and to preserve filtration efficiency\u003c\/li\u003e\n  \u003cli\u003eReusable design eliminates repeated purchases and cut-downs in parts changes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the materials, specifications, and warranty details?\u003c\/h3\u003e\n\u003cp\u003eThe RU-5173 features a molded pliable rubber flange, four-layer cotton gauze media, and durable construction intended to last. Key dimensions are a 6-inch flange diameter, 6-inch overall height, and 0.625-inch flange length. The product ships pre-oiled and carries a one-year limited warranty from K\u0026amp;N.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFlange diameter: 6 in; Filter height: 6 in; Flange length: 0.625 in\u003c\/li\u003e\n  \u003cli\u003eRound tapered (cone-style) shape for versatile fitment across many applications\u003c\/li\u003e\n  \u003cli\u003eMade in USA with rugged materials for long service life\u003c\/li\u003e\n  \u003cli\u003e1-Year limited warranty and recommended K\u0026amp;N cleaning products for maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The K\u0026amp;N RU-5173 is aimed at DIY mechanics, custom intake builders, and performance-minded drivers who want a durable, oil-prepared clamp-on filter that improves airflow without recurring disposable-filter costs. It’s well suited to people replacing restrictive paper elements, assembling aftermarket intakes, or those seeking a reusable solution that reduces waste. If you need a straightforward, reliable clamp-on filter with established brand support and long service intervals, this K\u0026amp;N high-flow unit is a practical choice.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I clean the K\u0026amp;N RU-5173 filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Under normal highway driving, clean roughly every 75,000 miles (about five years). Inspect sooner in dusty conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this clamp-on filter fit my intake tube?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The RU-5173 has a 6\" flange diameter and flexible 0.625\" flange length; it fits many tubes but verify your intake diameter before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":67585109622969,"sku":"B07TKNH6N9","price":192.31,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/k-and-n-ru-5173-front-view.jpg?v=1790467571","url":"https:\/\/redleafauto.ca\/products\/k-n-universal-clamp-on-air-filter-6-inch-flange-tapered-cone-washable-pre-oiled","provider":"Redleaf Auto","version":"1.0","type":"link"}