What are the dimensions of the K&N Universal Air Filter?The K&N Universal Air Filter features a 4 inch flange inner diameter and 1.125 inch flange length, with a total height of 9.5 inches for robust fitment.How often should the K&N Universal Air Filter be cleaned?Clean the K&N Universal Air Filter when visual inspection shows significant dirt accumulation to maintain optimal airflow and peak engine performance.The K&N Universal Air Filter delivers superior engine performance, backed by a usage score of 8 for Engine Performance. Its 4 inch flange ID and 9.5 inch height ensure precise integration. Trust K&N Engineering for a washable, reusable air filter built for sustained peak performance and confident fitment.Key Features4in Flange ID1.125in Flange Length9.5in HRG-1002RDwashable and reusable1-Year Limited WarrantyWhy Choose the KN Universal Air FilterDelivers a precise fit for seamless integration into your existing intake system.Achieves a secure and stable connection, preventing air leaks for optimal performance.Provides ample filtration surface area for maximum airflow and engine breathing.Transforms your engine’s potential with a filter designed for long-term efficiency.Who Is This For?Street Performance 7/10Washable and reusable for sustained peak performance.Engine Performance 8/10Washable and reusable for sustained peak performance.Easy DIY Install 6/10Universal fit design simplifies installation.Racing Competition 5/10Washable and reusable for sustained peak performance.Track / Autocross 5/10Washable and reusable for sustained peak performance.Visual / Aesthetic Upgrade 4/10Red color RG-1002RD may enhance engine bay appearance.Frequently Asked QuestionsWhat is the fitment for the K&N Universal Air Filter?Confirm fitment with your vehicle to ensure a precise fit for seamless integration into your existing intake system. This universal fit design allows for broad compatibility when proper checks are performed, providing confidence in installation. Achieving a precise fit is crucial for optimal engine performance.How difficult is it to install a K&N Universal Air Filter?Installation of the K&N Universal Air Filter is simplified due to its universal fit design, making it an easy DIY install. This approach helps ensure a secure and stable connection, preventing air leaks for optimal performance. Enthusiasts can expect a straightforward upgrade process.What performance outcome can be expected from a K&N Universal Air Filter?Engine performance is enhanced with a washable and reusable filter designed for sustained peak engine performance and airflow, scoring an 8 for Engine Performance. This design provides ample filtration surface area for maximum airflow and engine breathing. Experience transformed engine potential with this filter.Is upgrading to a K&N Universal Air Filter worthwhile compared to an OEM filter?Upgrading delivers sustained peak engine performance and airflow, making it a valuable enhancement over OEM. The washable and reusable nature of the filter contributes to long-term efficiency and sustained peak performance. Invest in your engine’s potential with this advanced filtration.What is the recommended maintenance for a K&N Universal Air Filter?This K&N Universal Air Filter is washable and reusable, requiring easy maintenance for sustained peak engine performance. This design provides ample filtration surface area for maximum airflow and engine breathing, transforming your engine’s potential. Enjoy long-term efficiency and reliable airflow.Additional ResourcesOfficial K&N Engineering Product PageImportant Notices CARB Notice: This product is NOT legal for street use in California under CARB (California Air Resources Board) regulations. For off-road or race use only. 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”:”RG-1002RD”,”sku”:”KNNRG-1002RD”,”gtin”:”024844313348″,”name”:”KN Universal Air Filter”,”@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 – Universal Fit”,”description”:”Delivers a precise fit for seamless integration into your existing intake system. Achieves a secure and stable connection, preventing air leaks for optimal performance. Washable and reusable for sustained peak engine performance and airflow.”,”isRelatedTo”:{“name”:”Air Filters – Universal Fit”,”@type”:”Thing”},”alternateName”:”K&N Universal Air Filt