For Honda Accord/Acura CL 4-2-1 Stainless Steel Exhaust Header (Chrome) - 5th Gen F22 4CYL CD Precision machined steel flanges that provide a tight seal at the head and allows a high flow rate through the primary tubes Made From High Quality T304 Stainless Steel For Strength & Durability Constructed With TIG Welded CNC Machine Flange For Percision & Fitment All Tubing Is Mandrel-Bent Comes With O2 Sensor Insertion & Metal Gasket