Will this air filter fit my car?K&N Drop-in Air Filters feature vehicle-specific fitment designed to directly replace your factory air filter for a perfect match.How often should I clean my K&N air filter?Cleaning K&N Drop-in Air Filters is recommended every 50,000 miles, or as needed based on driving conditions and dirt accumulation.K&N Drop-in Air Filters are engineered for enhanced engine performance, achieving an 8 out of 10 for Street Performance. Utilizing state-of-the-art design of layered, oiled cotton media, this washable and reusable Air Filter – Drop In delivers noticeable acceleration and responsiveness.Key FeatureswashablereusableHigh-Flow Air Filtersstate-of-the-art design of layered, oiled cotton mediaengineered to improve airflow and capture contaminantsdesigned to provide an increase in horsepowerWhy Choose the KN Drop in Air FiltersDelivers long-term savings and environmental responsibility with easy cleaning and reuse.Achieves superior engine protection by effectively trapping harmful dirt and debris.Provides a noticeable boost in acceleration and responsiveness for a thrilling drive.Transforms your driving experience with enhanced throttle response and power delivery.Who Is This For?Street Performance 8/10Improves airflow and designed for horsepower increase.Engine Performance 9/10High-flow, oiled cotton media improves airflow.Track / Autocross 7/10Designed for increased horsepower and improved airflow.Racing Competition 7/10Engineered for improved airflow and horsepower gains.Easy DIY Install 9/10Drop-in installation type is 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 high-flow air intake upgrade designed for direct replacement of your stock filter. It fits 1974-1983 Porsche 911 models, offering a state-of-the-art design of layered, oiled cotton media. This advanced construction ensures superior engine protection and improved airflow.How do I clean a K&N drop-in air filter?Cleaning a K&N drop-in air filter is a simple process, reflecting its easy DIY install type. The washable and reusable filter media allows for straightforward maintenance, delivering long-term savings and environmental responsibility. Your filter will be ready for continued optimal performance after cleaning.What performance gains can I expect from a K&N air filter for my 1974-1983 Porsche 911?Expect a noticeable boost in acceleration and responsiveness, contributing to a 9/9 score for Engine Performance. This high-flow, oiled cotton media improves airflow significantly for your 1974-1983 Porsche 911. Experience a transformed driving experience with enhanced throttle response and power delivery.What are the materials used in K&N drop-in air filters?K&N drop-in air filters feature a state-of-the-art design of layered, oiled cotton media. This specialized construction is engineered to improve airflow and effectively capture contaminants, providing superior engine protection. The washable and reusable nature of the media ensures long-term benefits for your 1974-1983 Porsche 911.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”:”33-2004″,”sku”:”KNN33-2004″,”gtin”:”024844001658″,”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/bd2d80668fec06c64fb9053a1f05cb36.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 long-term savings and environmental responsibility with easy cleaning and reuse. Achieves superior engine protection by effectively trapping harmful dirt and debris. Designed to provide an increase in horsepower”,”isRelatedTo”:{“name”:”Air Filters – Drop In”,”@type”:”Thing”},”alternateName”:”K&N Drop In Air Filter Horsepower Gain”,”additionalProperty”:[{“name”:”Feature”,”@type”:”PropertyValue”,”value”:”washable”},{“name”:”Feature”,”@type”:”PropertyValue”,”value”:”reusable”},{“name”:”Feature”,”@type”:”PropertyValue”,”value”:”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 improve airflow and capture contaminants”},{“name”:”Feat