AEM 21-2011DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 2.5 in (64 mm) Flange ID; 5 in (127 mm) Height; 5.5 in (140 mm) Base; 4.75 in (121 mm) Top Designed to increase horsepower and throttle response AEM Air Filters are cleanable and guaranteed for the life of your vehicle Captures up to 99% of harmful contaminants Outstanding performance even in dusty racing conditions Manufactured in the USA