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Whether you need to replace a damaged filter on your Sinister Diesel Cold Air Intake or if you're making your own air intake, Sinister Diesel has you covered! Coming in at 10" tall and a 4" Inner Diameter and high flow filter, the Sinister Diesel Universal Replacement Filter can support huge air flow to meet any needs. We utilize an 8-layer cleanable cotton filter media for maximum air flow and a long life.; Features:8-Layer Cleanable Cotton Filter Media, 10" tall w/ a 4" ID Silicone Inlet, Features a Honey-comb Filter-guard that's finished in Sinister BlueClick Here for Pre-Filter