Air Filter (Dry Extendable) For Intake Kit 75 5175 75 5175D S&B OK4WD Vibrant Classic Air Filters OTR CO10595 Conical 6 1 4" Top 7 3 4" Btm 11 1 4" Tall 5" Opening Vibrant For The Classic Performance Air Filter 5.25in O.D Cone x 5in Vibrant Classic Air Filters Air Filter (Dry Extendable) For Intake Kit 75 5175 75 5175D S&B OK4WD. Vibrant Performance classic standard air filters feature a 4ply pleated cotton gauze element that allows for significantly more airflow than a stock filter while providing excellent filtration of airborne particulate. Each filter is pre oiled, washable and reusable. Vibrant Performance classic standard air filters are an excellent choice for turbo charged applications and are available in Inlet I. D. Diameters ranging from 2. 25 to 4. 5.