How often do I need to clean my K&N air filter?Clean your K&N drop-in air filter every 50,000 miles to maintain its optimal performance and efficiency.Can I install a K&N air filter myself?Install your K&N drop-in air filter easily into the factory air box for an immediate performance boost.K&N Drop-in Air Filters deliver an 8 score for Street Performance, designed to provide an increase in horsepower for your vehicle. Featuring state-of-the-art washable, reusable, layered oiled cotton media, these filters unlock superior airflow. Invest in lasting engine performance and enjoy an exhilarating driving experience with confidence.Key Featureswashable reusable High-Flow Air Filtersstate-of-the-art design of layered oiled cotton mediadesigned 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 Warrantydrop-in replacement filters are designed to install easily into your factory air boxWhy Choose the KN Drop in Air FiltersDelivers a noticeable surge in horsepower for exhilarating acceleration.Achieves superior airflow, unlocking your engine’s full potential.Provides long-term savings and environmental benefits through reusability.Transforms your driving experience with effortless installation and lasting performance.Who Is This For?Street Performance 8/10Designed to provide an increase in horsepower.Track / Autocross 7/10High-Flow Air Filters designed for performance gains.Drag Racing 7/10High-Flow Air Filters designed for performance gains.Racing Competition 7/10High-Flow Air Filters designed for performance gains.Engine Performance 9/10Designed to provide an increase in horsepower.Easy DIY Install 9/10Drop-in replacement filters install easily into factory air box.Frequently Asked QuestionsHow does a K&N drop-in air filter improve my vehicle’s performance?An increase in horsepower is delivered by K&N drop-in air filters. These filters achieve a high score of 9 for Engine Performance, unlocking your engine’s full potential through superior airflow. This upgrade provides lasting performance gains for your vehicle.Are K&N drop-in air filters easy to install?Installation of K&N drop-in air filters is straightforward. They are designed as a drop-in replacement, earning a perfect score of 9 for Easy DIY Install, fitting directly into your factory air box. Experience effortless installation and immediate performance enhancement.Will a K&N drop-in air filter fit my G37?Fitment for your G37 can be confirmed with the K&N drop-in air filter system. Always verify specific vehicle compatibility to ensure a perfect match. This ensures confidence in a precise and effective upgrade for your vehicle’s intake.Is upgrading to a K&N drop-in air filter worthwhile over the stock filter?Upgrading to a K&N drop-in air filter provides long-term value and environmental benefits. Its reusable, engineered design lasts for the lifespan of your vehicle, unlike disposable OEM filters. This offers superior airflow and significant savings over time.What makes K&N drop-in air filters reusable?The state-of-the-art design of layered, oiled cotton media makes K&N drop-in air filters reusable. This advanced material construction ensures consistent airflow and filtration over many cleaning cycles. Enjoy a washable, reusable filter engineered for the entire lifespan of your vehicle.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-3690″,”sku”:”KNNE-3690″,”gtin”:”024844004376″,”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/55f59acbe9c9877318d80dbaee0db72f.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 a noticeable surge in horsepower for exhilarating acceleration. Achieves superior airflow, unlocking your engine’s full potential. Designed to provide an increase in horsepower”,”isRelatedTo”:{“name”:”Air Filters – Drop In”,”@type”:”Thing”},”alternateName”:”K&N High-Flow Drop-In Air Filter 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”