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The NGK direct-fit oxygen sensor for Toyota 4Runner (2003–2004) restores accurate oxygen sensing to the ECU to aid air–fuel ratio control, support fuel efficiency and reduce emissions. It applies NTK ceramic sensor technology with a 3-stage contaminant‑resistant plasma jet and deposit-trap overcoat to protect the element from poisoning. NTK's OEM development involvement helps ensure consistent quality and direct-fit replacement reliability.
NGK Toyota 4Runner 2004-2003 Direct Fit Oxygen Sensor
