4Pcs O2 Oxygen Sensor Upstream & Downstream For 2004-2006 Audi A8 Quattro 4.2L

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 AUDI A8 QUATTRO V8-4.2 2006-2004 2Pcs Upstream + 2Pcs Downstream VOLKSWAGEN TOUAREG V8-4.2 2007-2004 AXQ Engine; 2Pcs Upstream + 2Pcs Downstream