Mercedes-Benz NOx Sensor A0101531528 5WK97330A For Emissions System

Mercedes NOx sensor (OEM numbers A0101531528/5WK97330A); KLP brand direct replacement with strong universality. Core function is real-time monitoring of nitrogen oxide concentrations in exhaust, sending signals to ECU to adjust injection and SCR system to ensure emissions compliance. Fits Mercedes diesel cars with OM642, OM651 engines in GLK, ML, E-Class etc. After installation, can resolve engine fault light, torque limit or power loss; prevents annual inspection failure due to emissions. If fuel consumption rises or acceleration drops, check sensor.