AEM-21-203D-XKDesigned to increase horsepower and accelerationAir filter top for greater airflowHigh air flow with excellent filtrationClamp-on washable and reusable air filterBacked by AEM warrantyAEM Dryflow Universal Clamp-on Air Filters are washable synthetic air filters designed for an optimum combination of air flow, filtration, and performance. AEM Dryflow filters use an innovative high performance oil-free filtration material that allows easy cleaning, durable service, and excellent filtration. This clamp-on universal air filter has a filter top for higher air flow capability making it great for racing use.