How do I clean my K&N air filter?K&N air filters are washable and reusable, requiring a K&N cleaning kit for optimal performance and longevity.What is the horsepower increase with the K&N drop-in air filter?These drop-in air filters are engineered to provide a noticeable increase in horsepower and overall engine performance.K&N Drop-in Air Filters are engineered to provide an increase in horsepower for your vehicle, boasting a high score of 9 for engine performance. Featuring a state-of-the-art design of layered, oiled cotton media, these washable, reusable filters ensure superior engine protection and sustained power. Experience enhanced engine performance and confidence with this premium air filtration solution.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 power and responsiveness 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 overall engine performance.Transforms your driving experience with a filter built to last your vehicle’s lifetime.Who Is This For?Street Performance 8/10Engineered to improve airflow and increase horsepower.Track / Autocross 7/10Designed for improved airflow and potential horsepower increase.Drag Racing 7/10Potential horsepower increase aids acceleration.Engine Performance 9/10High-flow, oiled cotton media improves airflow.Easy DIY Install 10/10Drop-in install type is straightforward.Fuel Efficiency 6/10Improved airflow may contribute to efficiency.Frequently Asked QuestionsWhat is a K&N drop-in air filter for a 2004-2009 Dodge Durango?A K&N drop-in air filter is a washable, reusable filtration component engineered for your 2004-2009 Dodge Durango. It fits directly into your vehicle’s factory airbox, replacing the stock paper filter with advanced layered, oiled cotton media for superior airflow and contaminant capture. This ensures a sustained performance upgrade specifically designed for your vehicle’s fitment.How do I clean and maintain a K&N drop-in air filter?Cleaning your K&N drop-in air filter involves a straightforward process using a K&N Recharger kit, designed to restore its high-flow performance. This easy DIY maintenance ensures the reusable, oiled cotton media continues to trap contaminants effectively for the entire lifespan of your vehicle. Proper cleaning is crucial for sustained engine protection and performance.Does a K&N drop-in air filter improve horsepower in a 2004-2009 Chrysler Aspen?A K&N drop-in air filter is designed to provide an increase in horsepower for your 2004-2009 Chrysler Aspen. Its high-flow, oiled cotton media improves airflow, contributing to an ‘Engine Performance’ use case score of 9, delivering a noticeable boost in acceleration and overall engine responsiveness. This upgrade transforms your driving experience with enhanced power.What makes the K&N drop-in air filter perform better than a standard filter?The K&N drop-in air filter performs better due to its state-of-the-art design of layered, oiled cotton media, engineered to improve airflow significantly. This advanced material captures more dirt than standard filters, delivering sustained power and responsiveness. It transforms your driving experience with a filter built to last your vehicle’s lifetime and enhance overall engine performance.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”:”33-2288″,”sku”:”KNN33-2288″,”gtin”:”024844104878″,”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”:””,”offers”:{“@type”:”Offer”,”price”:”68.99″,”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 power and responsiveness 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”,”@type”:”Thing”},”alternateName”:”K&N Drop in Air Filter Horsepower Gain”,”addition