Mercedes-Benz NOx Sensor A0009053000/5WK96682 12V Original Specification

When your Mercedes instrument cluster lights up engine fault, with accelerating weakness, abnormal fuel consumption, or emission tests failing, NOx sensor aging may be to blame, causing ECU to fail to monitor NOx accurately. This sensor works by real-time feedback of NOx in exhaust to optimize combustion and SCR injection to meet emissions and power smoothness. OEM replacement: A0009053000/5WK96682; fits Mercedes W204, W212, W166 and other models with OM642 or OM651 engines. Install with the engine cold; keep sensor mounting hole clean and tighten to about 50 N·m to avoid ceramic damage.