This 5-3/4* tall 360-degree radial flow air filter features a 5-1/2" flange and our oil-free Pro DRY S media with three layers of synthetic media for maximum convenience. Its progressive layering provides great filtration efficiency and dust holding capacity, while not requiring the use of oils. This media is best suited for street use. Its inverted top makes for more filter surface area, resulting in longer service intervals.aFe POWER developed this heat shield to snap onto the top of the lower half of the factory air box to provide a hassle-free installation utilizing factory mounting locations. This system features a high quality, computer-designed, dyno-tuned intake tube to achieve maximum power gains while maintaining a perfect fit. Its XLPE (cross-linked polyethylene) material is heat soak resistant and extremely durable. The computer designed system utilizes factory mounting locations, minimizing the use of unnecessary hardware, and ensuring a perfect fit every time. This is a direct bolt-on kit that requires no cutting or drilling on factory parts. Stainless-steel clamps are included for strength, and a premium silicone coupling allow for ample flexibility. This air intake system works perfectly in combination with aFe POWER D.A.S. (Dynamic Air Scoop): 52-10010S(Black), 52-10010SR(Red) and 52-10010SL(Blue). Rapid Induction Cold Air Intake System w/ Pro DRY S Filter Ford F-150 21-23 V8-5.0L Ford F-150 21-23 V8-5.0L