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The NGK direct-fit oxygen sensor for Infiniti QX4 (1997–2000) provides continuous closed-loop oxygen feedback to the ECU to help regulate air–fuel ratio, sustain engine performance and lower emissions. It features an advanced ceramic sensor element with a 3-stage contaminant-resistant plasma jet and deposit-trap overcoat to protect against poisoning, and the design is continually improved through OEM partnerships for reliable fitment and service life.
NGK Infiniti QX4 2000-1997 Direct Fit Oxygen Sensor
