2Pcs Upstream & Downstream O2 Oxygen Sensor For Mercedes-Benz ML500 R500 SLK55

table.tableizer-table { font-size: 12px; border: 1px solid #CCC; font-family: Arial, Helvetica, sans-serif; } .tableizer-table td { padding: 4px; margin: 3px; border: 1px solid #CCC; } .tableizer-table th { background-color: #104E8B; color: #FFF; font-weight: bold; } Make Model Engine Year Notes MERCEDES-BENZ ML500 V8-5.0 2007 Left Side; 1 Upstream & 1 Downstream MERCEDES-BENZ R500 V8-5.0 2007-2006 Left Side ; 1 Upstream & 1 Downstream MERCEDES-BENZ SLK55 AMG V8-5.5 2011-2005 Left Side ; 1 Upstream & 1 Downstream