BBK Performance High Flow Blue Air Filter Replacement PART #1808 FEATURES: Direct Replacement Filter To Fit ALL BBK Cold Air Intake Part Numbers 1768, 17685, 1846, 18465, 1847, 18475, 1850, 18505 High-Flow Washable Cotton Gauze Construction Inlet I.D.: 3.6" Overall Length: 8.85" Exact Replacement FilterThese high-flow air filters are designed to replace your BBK Cold Air Intake filter or for custom applications. They are the same filter you get with BBK KIT PART #1768, 17685, 1846, 18465, 1847, 18475, 1850, 18505 cold air intakes. Washable and ReusableBBK air filters are constructed from washable cotton element to allow easy cleaning. Our air filters flow up to 75% better than similar sized paper filters. This replacement filter does NOT include a clamp - because the clamp is already a part of the Cold Air Kit. (Hoses & Clamps) Emissions InformationThis part is NOT C.A.R.B Approved and cannot be installed for use on any emission controlled vehicle in California. It cannot be sold or shipped to any California resident or addressee.