What vehicles are K&N Drop-In Air Filters compatible with?K&N Drop-in Air Filters are engineered for a precise fit in your factory air box; confirm fitment for your specific vehicle model.How often do I need to clean my K&N Drop-In Air Filter?Clean your K&N Drop-in Air Filter when visibly dirty to maintain optimal airflow and sustained peak performance for your engine.K&N Drop-in Air Filters offer an 8 score for Street Performance and Track/Autocross, engineered to directly increase horsepower. Featuring a state-of-the-art design with layered oiled cotton media, these washable, reusable air filters capture more contaminants. Experience superior engine protection and a noticeable boost in acceleration with this straightforward performance upgrade.Key Featureswashable reusable High-Flow Air Filtersstate-of-the-art design of layered oiled cotton mediaengineered to improve airflow and capture contaminantsdesigned to provide an increase in horsepowerreusable engineered to last for the entire lifespan of your vehicledesigned to install easily into your factory air boxWhy Choose the KN Drop in Air FiltersDelivers sustained peak performance with a filter that cleans and reuses.Achieves superior engine protection by trapping more dirt with advanced oiled cotton.Provides a noticeable boost in acceleration and responsiveness through optimized airflow.Transforms your driving experience with an easy, no-hassle upgrade for your BMW.Who Is This For?Street Performance 8/10Engineered to improve airflow and increase horsepower.Track / Autocross 8/10Designed to provide an increase in horsepower.Racing Competition 8/10Designed to provide an increase in horsepower.Engine Performance 9/10Improves airflow and designed for increased horsepower.Easy DIY Install 9/10Designed to install easily into your factory air box.Frequently Asked QuestionsWill the K&N Engineering KN Drop in Air Filters fit my vehicle?Confirming fitment, these K&N Drop-in Air Filters are precisely engineered to fit the 2013-2019 BMW X5 and X6 models. This direct-fit design ensures seamless integration with your vehicle’s factory air box. Experience confident performance with a filter guaranteed to match your specific BMW.How difficult is the K&N Engineering KN Drop in Air Filters installation?Installation of the K&N Drop-in Air Filters is a straightforward drop-in process, rated with an “Easy DIY Install” score of 9. This means you can easily upgrade your vehicle’s filtration system without specialized tools. Enjoy a hassle-free enhancement to your BMW’s engine.What performance improvement does the KN Drop in Air Filters provide over stock?Expect enhanced engine performance with these KN Drop-in Air Filters, achieving an “Engine Performance” score of 9. Their design optimizes airflow to deliver a noticeable boost in acceleration and responsiveness. Drive with sustained peak performance thanks to superior engine breathing.Is the K&N Engineering KN Drop in Air Filters worth upgrading from OEM?Upgrading from OEM is highly recommended for enhanced engine performance, achieving a “Street Performance” score of 8. The state-of-the-art design of layered oiled cotton media improves airflow and captures more contaminants. This upgrade delivers sustained peak performance and superior engine protection.What is the K&N Engineering KN Drop in Air Filter made of and how does it perform?These K&N Drop-in Air Filters feature a state-of-the-art design of layered oiled cotton media, engineered to improve airflow and capture contaminants. This construction provides superior engine protection and is designed to last for the entire lifespan of your vehicle. Enjoy lasting, high-performance filtration.Additional ResourcesOfficial K&N Engineering Product PageInstallation Guide (PDF)Important Notices Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.{“@graph”:[{“mpn”:”E-0659″,”sku”:”KNNE-0659″,”gtin”:”024844354631″,”name”:”KN Drop in Air Filters”,”@type”:”Product”,”brand”:{“url”:”https://www.knfilters.com”,”name”:”K&N Engineering”,”@type”:”Brand”,”sameAs”:”https://en.wikipedia.org/wiki/K&N_Engineering”},”image”:”https://d32vzsop7y1h3k.cloudfront.net/a3f824134271fd3388b096ff67aafdee.JPG”,”offers”:{“@type”:”Offer”,”price”:”157.99″,”seller”:{“url”:”https://www.motorsportmayhem.com”,”name”:”Motorsport Mayhem”,”@type”:”Organization”},”availability”:”https://schema.org/InStock”,”itemCondition”:”https://schema.org/NewCondition”,”priceCurrency”:”USD”,”priceValidUntil”:”2027-05-27″},”category”:”Air Filters – Drop In”,”description”:”Delivers sustained peak performance with a filter that cleans and reuses. Achieves superior engine protection by trapping more dirt with advanced oiled cotton. Designed to provide an increase in horsepower”,”isRelatedTo”:{“name”:”Air Filters – Drop In”,”@t