1 7/8" x 3" OR 2" x 3" Stainless Steel Long Tube Headers Optional connection pipes Kooks headers must be used with Kooks connection pipes or exhaust system O2 extensions, gaskets, and all installation hardware included These products are NOT legal for sale, installation, or use on a licensed vehicle in the state of California, and they do NOT meet CARB compliance  Part Number (Headers ONLY)  22512410, 22512610 Part Number w/o CATS 2251H410, 2251H610 Part Number w/ CATS 2251H420, 2251H620 Part Type Longtube Headers Brand KOOKS Vehicle 2014-2015 Camaro Z28 (5th Gen) Material Stainless Steel  *Item ships directly from vendor.