Keep the air entering your engine clean with our chrome plated steel air cleaners. They feature a recessed base and have a 6-3/8 in. diameter. These air cleaners have a chrome plated steel housing with a paper filter element. 6-3/8 Inch Chrome Air Cleaner, 2 Barrel Carb. Chrome plated steel 6-3/8″ diameter and 2-1/2″ tall filter element Fits 2 barrel carbs with 2-5/8″ neck includes stud and wing nut non-restricting flame retardant filter unique sculptured design to fit most applications performance engineered for increased breathing designed to perform with todays large displacement engines Does not fit 1968 and later cars equipped with factory air temperature control valve. Note: Does not work on carbs without a center stud.