The CNH 84414466 Ad-Blue NOx Sensor is an authentic OEM component designed for the Selective Catalytic Reduction (SCR) systems found in various New Holland, Case IH, and Steyr agricultural and construction equipment. This sensor accurately monitors nitrogen oxide (NOx) levels in the exhaust, which is crucial for the precise control of Diesel Exhaust Fluid (AdBlue/DEF) injection. Its reliable operation is essential for maintaining engine efficiency, reducing harmful emissions, and ensuring compliance with modern environmental standards. This sensor is a direct replacement for superseded CNH part numbers 5801754015 and 5801754016.