BBK Performance High Flow Blue Air Filter Replacement PART #1788 FEATURES: Direct Replacement Filter To Fit BBK Cold Air Intake Kits - Part Numbers 1775, 1777, 1733, 1738, 17385, 1830, 1831, 1832, 18315, 1800 High-Flow Washable Cotton Gauze Construction Inlet ID: 3.5" - 3.75" Approx. Overall Length: 9.75" Approx. 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 Fits# 1775, 1777, 1733, 1738, 17385, 1830, 1831, 1832, 18315, 1800 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. Stainless Steel ClampBBK air filters come with a new replacement stainless steel clamp. Stainless steel clamps are great for this use because they resist corrosion for a long service life. 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.