Stainless Steel Exhaust Headers Manifold For 05-10 Chevy Cobalt HHR Ion 2.0L/2.2L Fits: 2005-2010 Chevy Cobalt & HHR 2.20/2.0L 4-Cyl Fits: 2004-2007 Saturn Ion 2.20/2.0L 4-Cyl Excludes ALL Supercharged/Turbocharged Models DOES NOT fit Models With Secondary Air Injection System Tube Inlet Diameter: 1.625" X 0.875" (Oval). Tube Outlet Diameter: 3.25"