{"product_id":"k-n-high-flow-engine-air-filter-for-2008-2019-bmw-33-2428-washable-lifetime-performance","title":"K\u0026N High-Flow Engine Air Filter for 2008–2019 BMW (33-2428) — Washable, Lifetime Performance","description":"\u003cb\u003eK\u0026amp;N High-Flow Original Lifetime Engine Air Filter (33-2428) is a washable, reusable replacement that increases airflow and is engineered to improve engine performance for compatible 2008–2019 BMW models.\u003c\/b\u003e\n\n\u003cp\u003eThis high-performance replacement filter from K\u0026amp;N swaps directly into your factory air box and is built to last the life of your vehicle. Instead of disposable paper elements, K\u0026amp;N uses multiple layers of oiled cotton gauze to allow greater airflow while trapping contaminants. The result: potential gains in throttle response and sustained filtration with routine cleaning instead of frequent replacement.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter affect my car's performance?\u003c\/h3\u003e\n\u003cp\u003eThe K\u0026amp;N High-Flow media is designed to permit more air into the intake than a typical paper filter, which can contribute to improved acceleration and engine responsiveness. Performance benefits will vary by vehicle and driving conditions, but the construction aims to maintain protection while reducing flow restriction.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered media increases airflow compared to many stock filters\u003c\/li\u003e\n  \u003cli\u003eMulti-layer cotton gauze balances filtration and air passage\u003c\/li\u003e\n  \u003cli\u003eLaboratory and track testing used during product development\u003c\/li\u003e\n  \u003cli\u003ePre-oiled for immediate installation and measured performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this filter fit my BMW and how easy is installation?\u003c\/h3\u003e\n\u003cp\u003eThis model (33-2428) is manufactured to fit specific BMW years and models listed in the product compatibility details. Installation is typically a straightforward replacement inside the factory air box and can be completed in minutes with basic hand tools.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit design for compatible 2008–2019 BMW vehicles\u003c\/li\u003e\n  \u003cli\u003eNo modification to the air box required for most installations\u003c\/li\u003e\n  \u003cli\u003ePre-treated with oil; drop-in ready out of the box\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions and vehicle-specific fitment available from K\u0026amp;N\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow often does the filter need maintenance and what does cleaning involve?\u003c\/h3\u003e\n\u003cp\u003eUnder average highway driving, the filter typically requires cleaning about every 75,000 miles, though driving in dusty or severe conditions may call for more frequent service. K\u0026amp;N provides a cleaning kit and instructions; the process includes washing, drying, and re-oiling the filter media to restore filtration and airflow.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard cleaning interval cited at ~75,000 miles under normal conditions\u003c\/li\u003e\n  \u003cli\u003eCleaning kit available from K\u0026amp;N with step-by-step guidance\u003c\/li\u003e\n  \u003cli\u003eReusable design reduces landfill waste compared with disposable filters\u003c\/li\u003e\n  \u003cli\u003eProper re-oiling restores the filter's dust-trapping properties\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat warranty and quality assurances come with this filter?\u003c\/h3\u003e\n\u003cp\u003eK\u0026amp;N backs its filters with a limited warranty designed to cover many long-term issues, and the product is manufactured in the USA with controlled materials and processes. While no aftermarket part can promise identical results for every vehicle, K\u0026amp;N's testing and warranty reflect the brand's confidence in durability and build quality.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLimited lifetime warranty with certain terms and conditions\u003c\/li\u003e\n  \u003cli\u003eMade in the USA under K\u0026amp;N quality standards\u003c\/li\u003e\n  \u003cli\u003eConstructed with robust materials intended for long service life\u003c\/li\u003e\n  \u003cli\u003eTested across both road and track environments during development\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This K\u0026amp;N High-Flow Lifetime Engine Air Filter (33-2428) is aimed at BMW owners who want a long-lasting, serviceable alternative to disposable filters and who value improved airflow and throttle feel. It's a practical upgrade for daily drivers, performance-minded enthusiasts, and anyone who prefers an eco-friendlier filtration option that reduces recurring filter purchases.\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 K\u0026amp;N 33-2428 washable and reusable?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 33-2428 is washable and designed for repeated cleaning and re-oiling, reducing the need for replacements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this filter fit my 2015 BMW X5?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Possibly. Check the listed compatible models—2011–2018 BMW X5 is included; verify fit with your vehicle's engine code.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":48084171718814,"sku":"B002L4X6BS","price":87.78,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/k-and-n-filter-front-view.jpg?v=1785848369","url":"https:\/\/northtrailauto.ca\/products\/k-n-high-flow-engine-air-filter-for-2008-2019-bmw-33-2428-washable-lifetime-performance","provider":"North Trail Auto","version":"1.0","type":"link"}