FITMENT
Compatible with China National Heavy Duty Truck Group Co., Ltd. HOWO heavy-duty trucks equipped with SCR (Selective Catalytic Reduction) systems requiring NOx monitoring.
Common applications include HOWO Euro IV / Euro V / Euro VI diesel trucks using reference 5WK97109A.

FAQ
Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide concentration in exhaust gases and sends signals to the ECU for AdBlue (DEF) dosing control and emissions compliance.

Q2: Where is it installed?
A2: It is installed in the exhaust system, typically before or after the SCR catalyst depending on truck configuration.

Q3: What are symptoms of failure?
A3: Engine warning light, SCR system fault codes, poor AdBlue efficiency, and possible engine derating or limp mode.

Q4: Is it compatible with all HOWO trucks?
A4: No, compatibility depends on engine model (Weichai, Sinotruk engines), emission standard, and SCR system setup.