{"product_id":"k-n-engine-air-filter-for-ford-super-duty-v8-2017-2019-direct-fit-24-000-mile-extended-life","title":"K\u0026N Engine Air Filter for Ford Super Duty V8 — 2017–2019 Direct-Fit, 24,000‑Mile Extended-Life","description":"\u003cp\u003e\u003cstrong\u003eK\u0026amp;N KNF-0644 is an extended-life engine air filter engineered to protect and improve airflow for 2017–2019 Ford Super Duty V8 trucks, with a service interval of up to 24,000 miles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis K\u0026amp;N Advantage Plus replacement air filter is a direct-fit element designed to meet or exceed OEM performance for Ford F250, F350, F450 and F550 Super Duty models from 2017–2019. Built from a specially treated filter media blend, the KNF-0644 offers longer service life than standard disposable filters while providing high-efficiency particle capture and consistent airflow. It installs into the factory air box in minutes and is engineered to match factory dimensions so you get reliable sealing and fitment without modification.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter protect my Super Duty engine?\u003c\/h3\u003e\n\u003cp\u003eThe KNF-0644 uses a premium, specially treated synthetic or cellulose blend media to intercept dust and debris while allowing required airflow. K\u0026amp;N reports up to 99.5% efficiency in particle removal for the applications it serves, reducing abrasive contaminants that cause engine wear.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSpecially treated media captures fine particles while maintaining flow.\u003c\/li\u003e\n  \u003cli\u003eDesigned to meet or exceed OEM filtration specifications.\u003c\/li\u003e\n  \u003cli\u003eSeals to the factory air box to prevent unfiltered bypass air.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this filter improve performance or fuel economy?\u003c\/h3\u003e\n\u003cp\u003eThe filter is engineered to balance high filtration efficiency with stable airflow; that can help the engine breathe smoothly under load. While not a power part, it supports consistent combustion by minimizing airflow restriction compared with clogged or heavily soiled disposable filters.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered media for improved airflow consistency compared to worn filters.\u003c\/li\u003e\n  \u003cli\u003eSupports optimal air\/fuel balance for stable throttle response.\u003c\/li\u003e\n  \u003cli\u003eMay help maintain fuel economy by preventing airflow restriction over time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow often must I replace the K\u0026amp;N KNF-0644?\u003c\/h3\u003e\n\u003cp\u003eThis KNF-0644 cartridge is rated for up to 24,000 miles under normal highway driving conditions — roughly double the life of a typical 12,000-mile disposable filter. Actual replacement interval depends on driving environment; dusty or off-road use may require more frequent changes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard guideline: replace every 24,000 miles under normal highway driving.\u003c\/li\u003e\n  \u003cli\u003eInspect more often in dusty, towing, or severe duty conditions.\u003c\/li\u003e\n  \u003cli\u003eSimple swap-in replacement that takes minutes in the factory air box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this filter compatible with my 2017–2019 Ford Super Duty?\u003c\/h3\u003e\n\u003cp\u003eThe KNF-0644 is specified for V8-equipped Ford Super Duty trucks in the 2017–2019 model years, including F250, F350, F450 and F550. It is produced to match OEM fitment so installation is straightforward and no modification is required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit for 2017–2019 Ford F250, F350, F450, F550 with compatible V8 air boxes.\u003c\/li\u003e\n  \u003cli\u003eManufactured to meet OEM dimensions and installation points.\u003c\/li\u003e\n  \u003cli\u003eQuick replacement process: remove the old cartridge and seat the KNF-0644 in the factory housing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The K\u0026amp;N KNF-0644 is best for Ford Super Duty owners who want a long-life, OEM-fit replacement air filter that prioritizes engine protection and consistent airflow. If you drive mostly on highways and want fewer service intervals, or if you need a dependable direct-fit filter that installs quickly and meets OEM specs, this part offers a practical balance of filtration efficiency and extended life. For heavier off-road, dusty, or commercial duty cycles, plan for more frequent inspections and replacements based on conditions.\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 KNF-0644 a direct fit for my 2018 Ford F350 V8?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The KNF-0644 is specified as a direct-fit replacement for 2017–2019 Ford F250\/F350\/F450\/F550 V8 Super Duty models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does this K\u0026amp;N filter last under normal driving?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: K\u0026amp;N rates this Advantage Plus filter for up to 24,000 miles under normal highway driving; inspect sooner in dusty or severe conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":48079942910110,"sku":"B0DC3QJWG7","price":68.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/knf-0644-front-packaging.jpg?v=1785776528","url":"https:\/\/northtrailauto.ca\/products\/k-n-engine-air-filter-for-ford-super-duty-v8-2017-2019-direct-fit-24-000-mile-extended-life","provider":"North Trail Auto","version":"1.0","type":"link"}