aFe Power Momentum HD 51-73002 Ford Diesel Truck 99-03 V8-7.3L (td) Performance Intake System (Dry, 3-Layer Filter) Massive 1,000cfm performance 360 degree radial flow air filter 3-Layer non-oiled, washable synthetic media for the perfect balance of performance, protection and convenience Smooth one-piece sealed housing with unique filter to housing interface (patent pending) for easy installation Also features a CAD designed roto-mold intake tube, auxiliary air scoop and built in battery tray