4Pcs Upstream & Downstream Oxygen O2 Sensor For Chevrolet Ssr Trailblazer Ext

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 BUICK RAINIER V8-5.3 2004 2 Upsteam & 2 Downstream CHEVROLET SSR V8-5.3 2004-2003 2 Upsteam & 2 Downstream CHEVROLET TRAILBLAZER EXT V8-5.3 2004-2003 2 Upsteam & 2 Downstream GMC ENVOY XL V8-5.3 2004-2003 2 Upsteam & 2 Downstream GMC ENVOY XUV V8-5.3 2004 2 Upsteam & 2 Downstream ISUZU ASCENDER V8-5.3 2004-2003 2 Upsteam & 2 Downstream