Does this filter fit my Porsche 928?Confirm vehicle fitment using our online tool to ensure this K&N drop-in air filter is engineered for your specific Porsche 928.How does the K&N air filter improve engine performance?The layered, oiled cotton media increases airflow, capturing contaminants to provide a noticeable surge in power and responsiveness.K&N Engineering’s drop-in air filters are designed for a specific fitment, aiming for an increase in horsepower with a top score of 9 for Engine Performance. Featuring washable, reusable high-flow air filters with state-of-the-art layered, oiled cotton media, these filters deliver sustained peak performance with superior engine protection.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 that cleans and reuses.Achieves superior engine protection by trapping microscopic particles with advanced media.Provides a noticeable surge in power and responsiveness for exhilarating drives.Transforms your engine’s breathing for optimal efficiency and a thrilling driving experience.Who Is This For?Street Performance 8/10Engineered to improve airflow and increase horsepower.Track / Autocross 8/10Designed to improve airflow and increase horsepower.Racing Competition 8/10Designed to improve airflow and increase horsepower.Engine Performance 9/10High-Flow Air Filters engineered to improve airflow.Easy DIY Install 10/10Drop-in install type, reusable filter.Fuel Efficiency 7/10Improved airflow may contribute to better efficiency.Frequently Asked QuestionsWhat is the K&N drop-in air filter for my Porsche 928?This K&N drop-in air filter is designed as a direct replacement for your 1978-1995 Porsche 928’s stock air filter. It utilizes a state-of-the-art design of layered, oiled cotton media to improve airflow and capture contaminants. Engineered for enhanced engine performance, this filter fits seamlessly into your existing airbox.How do I clean and maintain my K&N drop-in air filter?K&N drop-in air filters are washable and reusable, offering sustained peak performance through simple cleaning. This easy DIY install feature ensures you can maintain your filter with minimal effort. Your K&N filter is engineered to last for the entire lifespan of your vehicle with proper care.What performance improvements can I expect from a K&N drop-in air filter on my Porsche 928?You can expect a noticeable surge in power and responsiveness, especially for Street Performance applications with an expected score of 8. This high-flow air filter transforms your engine’s breathing for optimal efficiency and a thrilling driving experience. The advanced media is engineered to improve airflow and capture contaminants effectively.What makes the K&N drop-in air filter superior to the OEM filter for my Porsche 928?The K&N drop-in air filter delivers superior engine protection by trapping microscopic particles with its advanced, state-of-the-art layered, oiled cotton media. Unlike disposable OEM filters, this reusable filter is engineered to last for the entire lifespan of your vehicle. This ensures sustained peak performance and contributes to better fuel efficiency with a score of 7.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”:”33-2591″,”sku”:”KNN33-2591″,”gtin”:”024844001306″,”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/c9b2dbb71533b26a2bea81dfbc1a95d2.JPG”,”offers”:{“@type”:”Offer”,”price”:”83.99″,”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 microscopic particles with advanced media. Designed to provide an increase in horsepower”,”isRelatedTo”:{“name”:”Air Filters – Drop In”,”@type”:”Thing”},”alternateName”:”K&N Drop in Air Filter Horsepower Increase”,”additionalProperty”:[{“name”:”Feature”,”@type”:”PropertyValue”,”value”:”washable, reusable High-Flow Air Filte