AEM 21-201D-XK Universal DryFlow Clamp-On Air Filter: Round Tapered; 2.5 in (64 mm) Flange ID; 5.5 in (140 mm) Height; 6 in (152 mm) Base; 5 in (127 mm) Top Designed to increase horsepower and acceleration Air filter top for greater airflow High air flow with excellent filtration Clamp-on washable and reusable air filter Backed by AEM warranty