{"product_id":"k-n-high-flow-universal-clamp-on-air-filter-ru-5173-6in-flange-6in-height-washable-reusable","title":"K\u0026N High-Flow Universal Clamp-On Air Filter RU-5173 — 6in Flange, 6in Height, Washable Reusable","description":"\u003cstrong\u003eK\u0026amp;N High-Flow Original Lifetime Universal Clamp-On Air Filter (RU-5173) is a washable, reusable tapered cone filter built to increase airflow and deliver long-lasting performance for many applications.\u003c\/strong\u003e\n\n\u003cp\u003eThis RU-5173 clamp-on air filter from K\u0026amp;N is a universal, tapered (cone-style) high-flow intake filter designed to replace disposable filters and support improved engine breathing. With a 6-inch flange diameter, 6-inch filter height and a 0.625-inch flange length, it fits a wide range of installations where a clamp-on connection is needed. Constructed with multiple layers of cotton gauze media, a resilient rubber flange, and pre-applied oil, this filter focuses on repeatable airflow gains, durable service life, and reduced waste compared with single-use paper elements.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter affect engine performance?\u003c\/h3\u003e\n\u003cp\u003eThe RU-5173 is built to increase airflow into the intake system while still trapping contaminants. Improved airflow can support quicker throttle response and help an engine run closer to its designed power band without sacrificing filtration efficiency.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eState-of-the-art cotton gauze media tuned for airflow and particle capture\u003c\/li\u003e\n  \u003cli\u003eMulti-layer construction balances protection with minimal flow restriction\u003c\/li\u003e\n  \u003cli\u003ePre-oiled media to optimize initial sealing and filtration performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install and maintain a clamp-on K\u0026amp;N Universal filter?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: slip the rubber flange over the intake pipe and secure with a hose clamp. Maintenance is low-frequency and user-serviceable — remove, clean, re-oil, and reinstall when needed rather than replacing the whole element.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFlange slips over a 6-inch intake pipe; use standard clamps for secure attachment\u003c\/li\u003e\n  \u003cli\u003ePre-oiled out of the box; follow K\u0026amp;N cleaning kit instructions for servicing\u003c\/li\u003e\n  \u003cli\u003eTypical cleaning interval: about every 75,000 miles under normal highway driving\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the construction and durability features I should know?\u003c\/h3\u003e\n\u003cp\u003eThis filter combines robust materials and precision molding to withstand vibration and repeated servicing. The pliable rubber flange absorbs movement and forms a reliable seal, while the cotton gauze media is supported by a protective mesh to maintain shape and filtration performance over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDurable molded rubber flange resists cracking and helps dampen vibration\u003c\/li\u003e\n  \u003cli\u003eFour layers of cotton gauze with a tack-treated finish for contaminant capture\u003c\/li\u003e\n  \u003cli\u003eMade in the USA with a 1-year limited warranty for peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this filter fit my vehicle or application?\u003c\/h3\u003e\n\u003cp\u003eRU-5173 is a universal clamp-on design intended for many custom and OEM-style setups where a 6\" flange works. Because it’s a tapered cone shape, it is most suitable for open-air intakes, custom cold-air setups, and many aftermarket intake pipes. Always verify flange diameter and available space before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFlange diameter: 6.00 inches; filter height: 6.00 inches; flange length: 0.625 inches\u003c\/li\u003e\n  \u003cli\u003eFits round tapered (cone) intake openings and many custom applications\u003c\/li\u003e\n  \u003cli\u003eIdeal for performance upgrades, custom intakes, and replacement of disposable elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The K\u0026amp;N RU-5173 suits enthusiasts, mechanics, and DIY builders who want a reusable clamp-on cone filter that improves airflow and reduces recurring filter purchases. It’s a good choice for people installing aftermarket intake pipes, restoring or modifying vehicles, or anyone seeking a durable, serviceable air filter that reduces landfill waste without sacrificing performance.\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 does the RU-5173 need cleaning?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Under normal highway use, clean approximately every 75,000 miles (about every 5 years average driving).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install this filter on any intake pipe?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits clamp-on installations with a 6-inch flange; verify pipe diameter and clearance before installing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":48081496572062,"sku":"B07TKNH6N9","price":118.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/kn-ru-5173-front-view.jpg?v=1785806654","url":"https:\/\/northtrailauto.ca\/products\/k-n-high-flow-universal-clamp-on-air-filter-ru-5173-6in-flange-6in-height-washable-reusable","provider":"North Trail Auto","version":"1.0","type":"link"}