重型卡车氮氧传感器 5WK96605C 20873395 替换升级，可靠性能

When heavy-duty trucks show reduced power, abnormal fuel consumption, or the gauge cluster lights up “Check Engine” and SCR system warnings, it’s typically an aging or failed nitrogen oxide sensor. This sensor monitors NOx concentration in exhaust and feeds data to the ECU to precisely control urea injection, ensuring emissions compliance and optimal engine performance. This is an OEM-standard replacement upgrade, OEM 5WK96605C / 20873395, fitting most China IV / China V / China VI heavy trucks. Installation notes: operate when the engine is cool to avoid scalding; clean carbon from the exhaust pipe interface and ensure sensor threads are clean and undamaged; torque per vehicle repair manual; overtightening or undertightening can cause signal issues.

When heavy-duty trucks show reduced power, abnormal fuel consumption, or the gauge cluster lights up “Check Engine” and SCR system warnings, it’s typically an aging or failed nitrogen oxide sensor. This sensor monitors NOx concentration in exhaust and feeds data to the ECU to precisely control urea injection, ensuring emissions compliance and optimal engine performance. This is an OEM-standard replacement upgrade, OEM 5WK96605C / 20873395, fitting most China IV / China V / China VI heavy trucks. Installation notes: operate when the engine is cool to avoid scalding; clean carbon from the exhaust pipe interface and ensure sensor threads are clean and undamaged; torque per vehicle repair manual; overtightening or undertightening can cause signal issues.