This Chevrolet window regulator and motor assembly is designed to fit the rear, left side of HHR models from 2006 to 2011. The assembly is made of galvanized steel and operates electrically. It is an OE/OEM part with interchange numbers 22714334 and GM1550161. This window regulator is suitable for LS, LT, LS Panel, LT Panel, SS, and SS Panel trims with 4-cylinder engines of 2.0L, 2.2L, or 2.4L displacement. It superseded part numbers 2011, 2010, 2009, 2008, and 2007. Please note that this product may expose you to certain chemicals under California Prop 65. It is not a vintage part and has no universal or performance fitment.