{"product_id":"k-n-high-flow-clamp-on-air-filter-rg-1001bl-4-in-flange-washable-reusable-cone","title":"K\u0026N High-Flow Clamp-On Air Filter RG-1001BL — 4 in Flange, Washable \u0026 Reusable Cone","description":"\u003cp\u003e\u003cstrong\u003eThe K\u0026amp;N High-Flow Original Lifetime Universal Clamp-On Air Filter (RG-1001BL) is a washable, reusable cone-style intake filter engineered to increase airflow and provide long-lasting filtration for many vehicle and equipment applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis tapered clamp-on filter combines a durable, pliable rubber flange with K\u0026amp;N’s multi-layer cotton gauze media to offer higher airflow than standard disposable paper filters while reducing waste and long-term replacement costs. With a 4-inch flange diameter, 5.5-inch filter height and 1.125-inch flange length, this round tapered design suits a wide range of custom and universal installations where a clamp-on intake is required.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter affect performance?\u003c\/h3\u003e\n\u003cp\u003eBy using layered, oiled cotton gauze, the filter allows more air to reach the engine compared with many stock paper elements, which can support stronger throttle response and potential horsepower gains under compatible conditions. It’s a common upgrade for enthusiasts looking for improved breathing without complex modifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eState-of-the-art media designed to increase airflow and acceleration.\u003c\/li\u003e\n  \u003cli\u003eMulti-layer cotton gauze to trap contaminants while permitting higher flow.\u003c\/li\u003e\n  \u003cli\u003ePre-oiled at manufacture for immediate installation and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow often will I need to clean this K\u0026amp;N filter?\u003c\/h3\u003e\n\u003cp\u003eThe RG-1001BL is engineered for extended service intervals; under normal highway driving it typically only needs cleaning about once every 75,000 miles (roughly five years for average annual mileage). Cleaning frequency depends on driving conditions—dustier environments will require earlier maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRecommended cleaning interval: approximately every 75,000 miles in normal conditions.\u003c\/li\u003e\n  \u003cli\u003eShorten interval for off-road, dusty, or heavy-stop driving conditions.\u003c\/li\u003e\n  \u003cli\u003eReusable design reduces recurring filter purchases and landfill waste.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes the clamp-on design and materials practical?\u003c\/h3\u003e\n\u003cp\u003eThe unit’s molded pliable rubber flange cushions vibration and provides a secure sealing surface for hose clamps, making it adaptable to a variety of intake pipes and setups. Rugged construction and quality materials are intended to withstand repeated cleanings and long-term use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4-inch flange diameter with 1.125-inch flange length for reliable clamping.\u003c\/li\u003e\n  \u003cli\u003eFlexible rubber flange absorbs vibration and creates a tight seal.\u003c\/li\u003e\n  \u003cli\u003eDurable assembly built to last a vehicle’s lifetime with proper care.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I install this filter myself and on what applications will it fit?\u003c\/h3\u003e\n\u003cp\u003eYes—K\u0026amp;N clamp-on filters are pre-oiled and ready for drop-in fitting, making them one of the simplest performance upgrades. The universal tapered shape and common flange size make the RG-1001BL suitable for aftermarket intakes, airboxes, small engines, and custom projects where a clamp-on filter is needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-oiled and ready to install—no additional prepping required.\u003c\/li\u003e\n  \u003cli\u003eUniversal fitment for many cone-style and clamp-on applications.\u003c\/li\u003e\n  \u003cli\u003eAvailable in multiple shapes and sizes across K\u0026amp;N’s clamp-on range for varied needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The K\u0026amp;N RG-1001BL is aimed at car and motorcycle enthusiasts, DIY mechanics, and anyone building or modifying intake systems who wants a durable, reusable filter that balances improved airflow with long service life. It’s also a practical choice for users who prefer fewer consumables and reduced landfill waste from disposable filters. If you need a 4-inch clamp-on solution with a 5.5-inch tapered profile and reliable, washable filtration, this K\u0026amp;N unit is designed to meet those needs.\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: Is the RG-1001BL pre-oiled and ready to install?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — this K\u0026amp;N clamp-on filter comes pre-oiled and ready for immediate installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this filter fit a 4-inch intake pipe?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the RG-1001BL features a 4-inch flange diameter designed for 4-inch clamp-on applications.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":48083136938142,"sku":"B00AFRIT2E","price":55.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/k_n-rg-1001bl-front-profile.jpg?v=1785826088","url":"https:\/\/northtrailauto.ca\/products\/k-n-high-flow-clamp-on-air-filter-rg-1001bl-4-in-flange-washable-reusable-cone","provider":"North Trail Auto","version":"1.0","type":"link"}