OPL HPR079 Aluminum Radiator For Subaru Impreza WRX STi (Manual Transmission) Fits: 2008-2011 Subaru Impreza WRX STi (Manual Transmission) Inlet: 1.5" / Outlet: 1.5" / Rows: 2 Core Size: 27" x 13.5" x 1.75" / Overall Size: 28" x 19" x 4" All aluminum alloy construction assembled using 100% precision TIG welds 10 year manufacturer warranty