AEM 21-205DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 4 in (102 mm) Flange ID; 5.25 in (133 mm) Height; 6 in (152 mm) Base; 5.125 in (130 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