NOX SENSOR

Walker Products Genuine OE Produced NOx Sensors are built to meet the demands of today’s complex diesel and gasoline emission systems. Engineered and manufactured by Tier 1 OE suppliers, each sensor is produced with the same high-quality materials, exacting standards, and precision technology used by leading vehicle manufacturers around the world. These sensors play a critical role in monitoring and managing nitrogen oxide (NOx) emissions in selective catalytic reduction (SCR) systems. Accurate NOx measurement is essential for proper aftertreatment performance, helping to reduce emissions, protect vital components like diesel particulate filters (DPFs), and ensure long-term engine efficiency. Walker’s NOx Sensors offer a true plug-and-play solution, designed for seamless installation with OE connectors and harness lengths. Fleet-tested and field-proven, our sensors deliver dependable performance in extreme heat, vibration, and corrosive exhaust environments. Whether you're replacing a failed sensor or proactively servicing your emission system, trust Walker Products to provide OE-level quality, fit, and reliability. From daily drivers to Class 8 trucks, Walker NOx Sensors support a wide range of domestic and import applications. With expanding coverage, expert technical support, and a commitment to emission system excellence, Walker Products continues to deliver trusted solutions that keep vehicles running cleaner, longer. NOx sensors in vehicle exhaust systems measure nitrogen oxide emissions, aiding ECM in emissions control for compliance with environmental regulations and ensuring efficient operation of systems like Selective Catalytic Reduction (SCR).