This new Nitrogen Oxygen Sensor comes with part numbers 51.15408-0015, 5WK96618D and 51154080009, ideal for truck engine parts replacement. It accurately monitors exhaust nitrogen oxygen concentration and feeds real-time data to the engine control system. Adopting high-grade sensing probes and corrosion-resistant sealed structure, it adapts to long-term harsh exhaust working conditions. Manufactured in line with OEM standards, it ensures perfect matching, stable signal output and reliable performance for routine truck engine maintenance.