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NGK 4‑wire air‑fuel (wideband) sensor for Acura RSX (2002–2004) provides a precise linear AFR output so the ECU can finely tune fuel mixture for cleaner combustion and improved efficiency. NTK's ceramic expertise is applied to the sensor element, which features a 3‑stage contaminant‑resistant overcoat to guard against poisoning. The direct‑fit replacement restores accurate closed‑loop control and emissions monitoring.
NGK Acura RSX 2004-2002 Direct Fit 4-Wire A/F Sensor
