Application and Function

The PEX 193NOX2004 is a nitrogen oxide (NOx) sensor for the exhaust system of Cummins diesel engines. Positioned within the aftertreatment stream, it provides NOx data required for selective catalytic reduction (SCR) and related emissions‑control functions. As part of PEX’s OEM‑quality aftermarket range, this unit is engineered for reliable feedback so the engine and aftertreatment system can manage dosing and diagnostics effectively in demanding heavy‑duty service.

Design and Serviceability

German‑engineered and built from high‑grade materials, the 193NOX2004 is designed to endure harsh exhaust environments while maintaining signal stability. It is presented as a plug‑and‑play replacement for compatible Cummins applications, matching existing harness and mounting provisions to streamline installation and reduce bay time. Depending on the application, NOx sensors are used upstream or downstream of the SCR catalyst; this part is intended to integrate with those configurations where specified.

When installed per application guidelines, the PEX 193NOX2004 supports accurate emissions monitoring and dependable aftertreatment operation. The part number identifies it within PEX’s heavy‑duty NOx portfolio targeted at fleets and service operations that require consistent measurement performance and straightforward replacement in modern diesel exhaust systems.