What is a K&N drop-in air filter?A K&N drop-in air filter is a direct replacement for your vehicle’s stock air filter, engineered for improved airflow and contaminant capture.How do I clean my K&N drop-in air filter?Clean your washable, reusable K&N drop-in air filter using a K&N cleaning kit, re-oiling the cotton media for sustained peak performance.K&N Drop-in Air Filters are engineered to provide an increase in horsepower, boasting a Street Performance score of 8. Featuring a state-of-the-art design of layered, oiled cotton media, these filters deliver sustained peak performance with a solution you can clean and reuse. Experience a noticeable boost in acceleration and throttle response with confidence.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 vehiclebacked by K&N’s 10-Year/Million Mile Limited WarrantyWhy Choose the KN Drop in Air FiltersDelivers sustained peak performance with a filter you can clean and reuse.Achieves superior engine protection by trapping more dirt with advanced oiled cotton.Provides a noticeable boost in acceleration and throttle response for a thrilling drive.Transforms your engine’s breathing for optimal power and efficiency, mile after mile.Who Is This For?Street Performance 8/10Engineered to improve airflow and increase horsepower.Track / Autocross 7/10Improves airflow for potential performance gains.Racing Competition 7/10Designed for increased horsepower and improved airflow.Engine Performance 9/10High-flow, oiled cotton media improves airflow.Easy DIY Install 10/10Drop-in install type is simple and straightforward.Fuel Efficiency 5/10Improved airflow may indirectly affect efficiency.Frequently Asked QuestionsWhat is a K&N drop-in air filter?A K&N drop-in air filter is a washable, reusable High-Flow Air Filter designed to replace your vehicle’s stock air filter. Its state-of-the-art layered, oiled cotton media is engineered to improve airflow and capture contaminants, offering sustained peak performance. This reusable filter is engineered to last for the entire lifespan of your vehicle, ensuring enduring engine protection.How do I clean my K&N drop-in air filter?Cleaning your K&N drop-in air filter is a straightforward maintenance procedure. It involves using a K&N cleaning kit to restore the filter’s high-flow capabilities. The maintenance level is easy, allowing you to achieve superior engine protection and deliver sustained peak performance with a filter you can clean and reuse.Will a K&N Drop-in air filter fit my Infiniti G37?Confirm fitment with your specific vehicle for precise compatibility. K&N drop-in air filters are engineered for a precise fit, ensuring a seamless upgrade. This direct-fit replacement guarantees optimal performance gains for your vehicle’s engine.What performance gains can I expect from a K&N drop-in air filter?Drivers seeking enhanced engine performance can expect a noticeable boost in acceleration and throttle response. This filter achieves a usage score of 8 for Street Performance, engineered to improve airflow and increase horsepower. This transforms your engine’s breathing for optimal power and efficiency.Additional ResourcesOfficial K&N Engineering Product PageImportant 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-3770″,”sku”:”KNNE-3770″,”gtin”:”024844004499″,”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/6032770917516c56c61f073cbddb1deb.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 you can clean and reuse. 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”,”@type”:”Thing”},”alternateName”:”K&N Drop-In Air Filters Increase Horsepower”,”additionalProperty”:[{“name”:”Feature”,”@type”:”PropertyValue”,”value”:”washable, reusable High-Flow Air Filters”},{“name”:”Feature”,”@type”:”PropertyValue”,”value”:”state-of-the-art design of layered, oiled cotton media”},{“name”:”Feature”,”@type”:”PropertyValue”,”value”:”engineered to i