BBK Performance High Flow Blue Air Filter Replacement PART #1774 FEATURES: Direct Replacement Air Filter For BBK Cold Air Intake #1771, 17715 High-Flow Washable Cotton Gauze Construction Inlet I.D.: 4" Overall Length: 9" Can Also Be Used for Custom Applications Exact Replacement Filter These 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 1771 and 17715 cold air intakes. Washable and Reusable BBK 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 Clamp BBK 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 Information This 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.