{"product_id":"k-n-engine-air-filter-kna-2456-long-life-18-000-mile-replacement-for-nissan-infiniti-high-airflow-oem-fit","title":"K\u0026N Engine Air Filter KNA-2456 — Long-Life 18,000-Mile Replacement for Nissan\/Infiniti, High Airflow \u0026 OEM Fit","description":"\u003cp\u003e\u003cstrong\u003eK\u0026amp;N Engine Air Filter KNA-2456 is a long-life replacement air filter engineered to deliver up to 18,000 miles of reliable engine protection and high airflow in compatible Nissan and Infiniti vehicles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned from the brand that has led high-flow filtration since 1969, this K\u0026amp;N Advantage Plus filter combines durable construction with premium synthetic or cellulose-blend media to balance protection and performance. It installs quickly into the factory air box and is built to meet or exceed OEM fit and filtration expectations for the listed applications, offering a longer service interval than many disposable filters.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the K\u0026amp;N KNA-2456 improve everyday engine protection?\u003c\/h3\u003e\n\u003cp\u003eThe KNA-2456 uses tightly controlled filter media to trap contaminants while supporting steady airflow to the engine. It’s engineered for up to 99% filtration efficiency (media dependent by application) so the engine breathes cleaner air over longer intervals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePremium synthetic or cellulose-blend media catches fine particles.\u003c\/li\u003e\n  \u003cli\u003eEngineered pleat geometry increases surface area for filtration.\u003c\/li\u003e\n  \u003cli\u003eMeets or exceeds OEM specifications for fit and sealing.\u003c\/li\u003e\n  \u003cli\u003eDurable frame resists deformation over service life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long will this filter last and when should I replace it?\u003c\/h3\u003e\n\u003cp\u003eThis K\u0026amp;N long-life filter is specified for replacement every 18,000 miles under normal highway driving conditions, which extends service life roughly 50% beyond standard 12,000-mile disposable filters. Replace sooner if you drive regularly in dusty or severe environments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplace every 18,000 miles during normal use.\u003c\/li\u003e\n  \u003cli\u003eShorten interval in heavy dust, off-road, or severe climates.\u003c\/li\u003e\n  \u003cli\u003eCheck the filter visually during routine maintenance.\u003c\/li\u003e\n  \u003cli\u003eSwap with the same K\u0026amp;N part number for consistent performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the KNA-2456 easy to install in my Nissan or Infiniti?\u003c\/h3\u003e\n\u003cp\u003eYes—installation is straightforward. The KNA-2456 is designed to drop into the factory air box and usually requires no special tools, making it a quick maintenance task you can complete in minutes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit replacement for compatible models—no trimming required.\u003c\/li\u003e\n  \u003cli\u003eTypical install time: a few minutes for most users.\u003c\/li\u003e\n  \u003cli\u003eFactory sealing surfaces preserved for proper fit and filtration.\u003c\/li\u003e\n  \u003cli\u003eFollow vehicle manual or simple online guides for steps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance trade-offs should I expect compared to OEM disposable filters?\u003c\/h3\u003e\n\u003cp\u003eThis long-life K\u0026amp;N filter emphasizes extended service life and airflow while maintaining high filtration efficiency. Users typically find fewer filter changes are needed, with performance comparable to or better than many original equipment disposable filters, but filter choice should match driving conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUp to 50% longer service life versus typical 12,000-mile filters.\u003c\/li\u003e\n  \u003cli\u003eDesigned to maintain engine airflow without sacrificing protection.\u003c\/li\u003e\n  \u003cli\u003eMedia varies by application—synthetic or cellulose-blend options.\u003c\/li\u003e\n  \u003cli\u003eVisually inspect in severe conditions; replace earlier if needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The K\u0026amp;N KNA-2456 is aimed at owners of compatible Nissan and Infiniti models who want a dependable, longer-interval replacement that balances filtration efficiency with airflow. It’s a good fit for drivers seeking reduced maintenance frequency, straightforward installation, and a product built to OEM fitment standards. If you frequently drive in dusty conditions, consider inspecting the filter more often or choosing a service interval to match your environment.\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: Which vehicles fit the KNA-2456?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Fits select Nissan and Infiniti models including 2014–2024 QX80, 2017–2024 Armada, and various Patrol\/QX56 years. Verify fit with your VIN or application guide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I clean and reuse this K\u0026amp;N filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This Advantage Plus model is a long-life replacement intended for 18,000-mile intervals; follow K\u0026amp;N guidance—some applications use disposable media, others allow cleaning per instructions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":48084483178654,"sku":"B0H1MNP83T","price":30.18,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/kn-front-view-kna-2456.jpg?v=1785856790","url":"https:\/\/northtrailauto.ca\/products\/k-n-engine-air-filter-kna-2456-long-life-18-000-mile-replacement-for-nissan-infiniti-high-airflow-oem-fit","provider":"North Trail Auto","version":"1.0","type":"link"}