RamAirUniversal clamp-on air filterConical shapethree-stage construction for high dust holding capacity. Supplied with a attachment hose clamp.These filters are designed to fit a number of air intakes over a wide range of vehicle applications, secured with a lightweight hose clamp (supplied). The fit for your application will be largely determined by the internal diameter of the collar. Developed to fit applications where space in the engine compartment is limited, but where maximum airflow is required.A = 5 1/2"B = 7 1/2"C = 8 1/4"D = 3/4"E = 4 1/4"