This reliable nitrogen oxygen sensor is widely applied to commercial truck exhaust emission systems. It real-timely detects NOX content inside exhaust gas and feeds accurate data back to engine ECU. It assists vehicle system in adjusting fuel injection and exhaust treatment strategies effectively. It meets strict vehicle emission standards and keeps stable sensing performance in long-term driving. Adopting anti-high temperature and anti-corrosion materials, it owns strong environmental adaptability. Made in line with original factory standards, it features high detection accuracy, stable signal output and long service life for vehicle after-treatment system maintenance.