{"product_id":"k-n-engine-air-filter-kna-2485-long-life-18-000-mile-replacement-high-flow-filtration","title":"K\u0026N Engine Air Filter KNA-2485 — Long-Life 18,000-Mile Replacement, High-Flow Filtration","description":"\u003cp\u003e\u003cstrong\u003eThe K\u0026amp;N Engine Air Filter KNA-2485 is a long-life, high-flow replacement filter engineered to deliver up to 18,000 miles of service while protecting your engine with premium synthetic or cellulose-blend media.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eK\u0026amp;N has supplied high-flow air filtration since 1969; this KNA-2485 variant brings that pedigree to everyday drivers who want extended service intervals without sacrificing filtration performance. Designed to meet or exceed OEM fit and function, the KNA-2485 installs quickly into your stock air box and is built to resist wear across extended miles. It’s offered in applications that use premium synthetic or cellulose-blend media, each formulated to trap a high percentage of particulates while maintaining airflow for efficient engine breathing.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter extend service intervals compared to standard replacements?\u003c\/h3\u003e\n\u003cp\u003eThe KNA-2485 is rated for up to 18,000 miles of normal highway driving, roughly 50% longer than many 12,000-mile disposable filters. That extended life helps reduce the frequency of replacements and can lower routine maintenance time and cost over the long run.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated service life: up to 18,000 miles under normal highway conditions.\u003c\/li\u003e\n  \u003cli\u003eAbout 50% longer life versus 12,000-mile filters.\u003c\/li\u003e\n  \u003cli\u003eDurable construction designed to hold performance over extended use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat protection and airflow performance can I expect?\u003c\/h3\u003e\n\u003cp\u003eK\u0026amp;N uses a premium synthetic or cellulose-blend media depending on the application to balance filtration efficiency and airflow. The media is engineered to capture a high percentage of airborne particles while allowing unrestricted air passage, supporting stable engine operation and responsiveness.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFiltration efficiency: up to 99% engine protection from particulate contaminants.\u003c\/li\u003e\n  \u003cli\u003eHigh-flow design maintains strong intake airflow for consistent performance.\u003c\/li\u003e\n  \u003cli\u003eMedia choice (synthetic or blend) matched to the specific vehicle application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs installation difficult and will it fit my vehicle?\u003c\/h3\u003e\n\u003cp\u003eThe KNA-2485 is made to drop directly into the factory air box and typically installs in minutes with no special tools. K\u0026amp;N engineers these filters to meet or exceed OEM dimensions and sealing requirements so the replacement is straightforward for most compatible models.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit replacement for listed vehicle applications.\u003c\/li\u003e\n  \u003cli\u003eUsually installs without tools—fits into original air box location.\u003c\/li\u003e\n  \u003cli\u003eMeets or exceeds OEM form, fit, and sealing expectations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I plan maintenance and replacements?\u003c\/h3\u003e\n\u003cp\u003eReplace the filter every 18,000 miles under normal highway driving conditions (about 1.5 years at 12,000 miles per year). If you drive frequently in dusty or off-road environments, inspect the filter sooner and replace it as needed to maintain protection and airflow.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplace every 18,000 miles for normal highway use.\u003c\/li\u003e\n  \u003cli\u003eInspect earlier if operating in dusty or severe conditions.\u003c\/li\u003e\n  \u003cli\u003eFollow your vehicle manufacturer’s service schedule and local driving conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The K\u0026amp;N KNA-2485 is aimed at daily drivers and light commuters who want a robust, longer-lasting replacement that retains OEM fit and airflow. It’s especially useful if you prefer fewer filter changes each year, drive popular compact and hybrid models included on the compatibility list, and want a straightforward, drop-in upgrade from standard disposable filters.\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 long does the KNA-2485 last?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Under normal highway driving the KNA-2485 is rated for up to 18,000 miles before replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does it fit my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This K\u0026amp;N model fits the listed Toyota, Subaru, Peugeot, Citroen and Daihatsu models; check the compatibility list for exact years.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":67593293660345,"sku":"B0H1MFSSBK","price":56.27,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/k_n-front-view-kna-2485.jpg?v=1790574222","url":"https:\/\/redleafauto.ca\/products\/k-n-engine-air-filter-kna-2485-long-life-18-000-mile-replacement-high-flow-filtration","provider":"Redleaf Auto","version":"1.0","type":"link"}