奔驰福莱纳卡斯卡迪亚12V氮氧传感器 5WK96657/A0081531228，精准测量

This 12V nitrogen-oxide sensor designed specifically for Freightliner Cascadia trucks, fits 2010–2018 with Detroit DD13, DD15, DD16 engines; precisely matches 12V electrical system. Core function is real-time monitoring of NOx in exhaust, feeds ECU to optimize SCR system for compliant emissions and improved fuel economy. OEM numbers 5WK96657 and A0081531228 for quick cross-check in inventory. Replacement difficulty medium; recommended with diagnostic tool to perform reset/calibration to avoid errors. Sensor uses high-temperature ceramic core; response faster by 15% than standard models; suitable for high-mileage fleets to reduce maintenance frequency.