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The NGK direct-fit oxygen sensor for Audi A8 Quattro (2005–2009) returns precise air-fuel ratio feedback to the ECU to preserve engine performance, improve fuel economy and reduce emissions. Built by NTK, a leading OEM sensor and ceramics specialist, the unit features an advanced ceramic sensing element with a 3-stage contaminant-resistant plasma-jet and deposit-trap overcoat to guard against element poisoning.
NGK Audi A8 Quattro 2009-2005 Direct Fit Oxygen Sensor
