Walker Products 285-1011 Nitrogen Oxide (NOx) Sensor

The Walker Products 285-1011 Nitrogen Oxide (NOx) Sensor is a genuine OE-quality replacement sensor engineered to restore proper emissions monitoring and engine management performance. Part of Walker Products' industry-leading NOx sensor program—the first genuine OE NOx line available to the aftermarket—this sensor is produced in a Tier 1 OE facility to meet or exceed all original equipment specifications and test requirements.

NOx sensors are a critical component of modern emissions systems. Positioned in the exhaust stream, the sensor measures nitrogen oxide concentrations and sends voltage signals to the engine control module (ECM), enabling precise management of systems such as Selective Catalytic Reduction (SCR) to keep emissions in compliance and the engine running efficiently.

Key Features:

• Genuine OE Tier 1 Quality – Produced in the same facilities and to the same standards as original equipment sensors
• Accurate Emission Control – Delivers precise NOx readings to help maintain peak SCR system efficiency and lower emissions
• Optimized Air-Fuel Ratio Monitoring – Monitors and adjusts air-fuel ratios to enhance engine efficiency and reduce fuel consumption
• Precise Combustion Management – Supports smooth engine operation, consistent power delivery, and improved throttle response
• Plug-and-Play Installation – Designed as a direct OE replacement for reduced install time and elimination of compatibility issues
• Fleet-Tested Reliability – Proven in demanding commercial and diesel applications for reduced downtime
• Made in the USA – Built using high-quality materials for exceptional durability and long-lasting performance

Walker Products NOx sensors are trusted by professional technicians and fleet operators alike. The 285-1011 provides a reliable, cost-effective solution for restoring emissions system integrity without sacrificing OE-level performance.