Cummins NOx Sensor 4326869 5WK96753B/5WK96753A Replacement OEM Part

This Cummins nitrogen oxide (NOx) sensor (model 4326869, compatible with 5WK96753B/5WK96753A) is designed for heavy-duty trucks and construction machinery equipped with ISX, ISL, ISM series engines from 2010 to 2018. Compatible models include Freightliner Cascadia, Kenworth T680, Peterbilt 579, etc. The sensor monitors NOx concentration in real time and transmits the signal to the ECU to optimize SCR injection, ensuring emissions compliance and improving fuel economy. OEM part number 4326869 can directly replace the factory part. It is recommended to inspect the wiring harness interface for oxidation during replacement, and installation torque should be controlled at 45-55 N·m to avoid damaging the ceramic element. As a KLP brand replacement, its performance conforms to SAE J1939 protocol and can effectively reduce fleet maintenance costs, suitable for bulk purchase for diesel aftertreatment system repairs.