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The NGK 5-wire wideband air-fuel sensor for Audi A8 Quattro (2005–2007) gives the ECU a linear AFR signal for precise air-fuel monitoring and continuous mixture adjustment to support efficient combustion and emissions control. Built by NTK, a major OEM sensor and ceramics specialist, the wideband sensor uses advanced ceramic element control and a three-stage contaminant-resistant plasma jet with deposit-trap overcoat to resist element poisoning.
NGK Audi A8 Quattro 2007-2005 Direct Fit 5-Wire Wideband A/F Sensor
