Standard Motor Products NOX051 Nitrogen Oxide NOx Sensor

The Standard Motor Products NOX051 is a direct-fit OE replacement Nitrogen Oxide (NOx) sensor designed for diesel-powered vehicles equipped with Selective Catalytic Reduction (SCR) emissions systems. NOx sensors play a critical role in monitoring nitrogen oxide levels in the exhaust stream, allowing the engine control module to regulate Diesel Exhaust Fluid (DEF) injection and maintain compliance with emissions standards.

Key Features:

• Direct-fit OE replacement ensures proper fit, form, and function for straightforward installation
• Plug-and-play design — no additional programming or calibration required
• 6-terminal connector for secure, reliable electrical connection
• Undergoes extensive testing and validation for proper performance and long-term reliability
• Manufactured under complete quality control as part of Standard Motor Products' comprehensive emissions sensor line

NOx sensors are positioned in the exhaust system to measure engine-out or post-SCR nitrogen oxide levels, enabling precise DEF dosing and helping prevent costly downstream emissions system failures. The NOX051 is engineered to restore proper SCR system function and help clear related diagnostic trouble codes (DTCs).