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NGK direct-fit oxygen sensor for Audi A4 (1996–1999) provides OE-quality sensing to help maintain engine performance, maximize fuel efficiency and reduce emissions. NTK sensors deliver constant closed-loop feedback to the ECU to control air-fuel ratio and support OBDII diagnostics. An advanced ceramic element with a 3-stage contaminant-resistant plasma jet and deposit-trap overcoat protects against element poisoning and improves durability.
NGK Audi A4 1999-1996 Direct Fit Oxygen Sensor
