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The NGK direct-fit oxygen sensor for Mazda Protege (1999–2003) provides OE-style air–fuel sensing to support closed-loop ECU control, helping maintain engine performance, improve fuel efficiency and reduce emissions. Using NTK ceramic technology, it incorporates a 3-stage contaminant-resistant ceramic element with a plasma-jet and deposit-trap overcoat to resist element poisoning and offer reliable OEM-matching replacement durability.
NGK Mazda Protege 2003-1999 Direct Fit Oxygen Sensor
