AEM 21-203BF Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 In (76 Mm) Flange ID; 5.125 In (130 Mm) Height; 6 In (152 Mm) Base; 5.125 In (130 Mm) Top.

AEM Dryflow filters use an innovative high performance oil-free filtration material that allows easy cleaning, durable service, and excellent filtration. Flange Inside Diameter: 4.5 in (114 mm) Height: 5.125 in (130 mm) Base: 6.0 in (165 mm) Top: 5.125 in (130 mm) Designed to increase horsepower and throttle response Outstanding performance even in dusty racing conditions Manufactured in the USA