The Detroit Diesel SCR Inlet NOx Sensor (ENV-NOX-1616) is a high-precision nitrogen oxide sensor designed for accurate emissions monitoring in Detroit Diesel SCR (Selective Catalytic Reduction) aftertreatment systems. It measures NOx levels before the SCR catalyst and sends real-time data to the ECM to optimize DEF dosing, improve combustion efficiency, and maintain strict emission compliance. This helps reduce harmful exhaust gases while supporting engine performance and fuel economy. Built with durable, heat-resistant materials, it ensures reliable operation under extreme temperature and heavy-duty conditions. Ideal for commercial trucks, it delivers stable readings, long service life, and efficient aftertreatment system performance.