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NGK direct-fit oxygen sensor for 2001–2003 Hyundai Elantra. Oxygen sensors provide continuous closed-loop feedback to the engine control unit, helping maintain engine performance, improve fuel economy and reduce emissions by controlling the air–fuel ratio and alerting OBDII systems to fuel delivery or catalytic converter problems. This sensor uses an advanced ceramic element with a 3-stage contaminant-resistant plasma-jet and deposit-trap overcoat for enhanced resistance to element poisoning.
NGK Hyundai Elantra 2003-2001 Direct Fit Oxygen Sensor
