NOx Nitrogen-oxygen Sensor Metal Plastic 68210084AA Replacement for Diesel Engine Emission Control System Gray Black Front Back
NOx Nitrogen-oxygen Sensor Metal Plastic 68210084AA Replacement for Diesel Engine Emission Control System Gray Black Front Back
NOx Nitrogen-oxygen Sensor 68210084AA for Diesel Emission Systems
This NOx nitrogen-oxygen sensor is a 100% brand new replacement component designed to monitor nitrogen oxide levels in diesel engine exhaust gases. Accurate NOx readings are essential for the proper functioning of selective catalytic reduction (SCR) systems, which help vehicles meet modern emission standards. Constructed from metal and plastic, this sensor offers the necessary durability and heat resistance for under-vehicle installation. The front of the sensor is gray, while the back is black, matching many OEM-style parts. Whether you are a professional mechanic or a DIY owner, this sensor provides a straightforward replacement for part number 68210084AA.
Features and Construction
This NOx sensor is built for precise exhaust gas measurement in demanding conditions. Its material composition and colour details are specified to aid correct identification and installation.
Material and Build
The sensor combines metal and plastic components. The metal section provides structural strength and thermal stability near the exhaust stream, while the plastic housing offers electrical insulation and weight reduction. This mixed-material design is standard for modern NOx sensors, balancing durability with cost-effectiveness.
Size and Practical Fit
Exact dimensions are not provided in the source text, but the sensor is a direct-fit replacement for part number 68210084AA. It is intended for diesel vehicles that use this specific OEM-style sensor. Always verify compatibility with your vehicle's make, model, and engine type before purchase.
Uses and Placement
The primary role of this NOx sensor is to measure oxygen and nitrogen oxide content in exhaust gases. This data is sent to the engine control unit (ECU) to optimise fuel injection and aftertreatment processes.
Vehicle Emission Systems
Installed in the exhaust system upstream or downstream of the SCR catalyst, this sensor helps the vehicle comply with Euro 4, 5, 6, and similar emission regulations. A faulty sensor can trigger warning lights and reduce engine performance.
Diagnostic and Replacement Use
When error codes related to NOx levels or sensor circuit faults appear, replacing the sensor with a new unit like this one can restore proper system function. It is a common service item for high-mileage diesels.
Benefits and Buying Value
Choosing a brand new NOx sensor ensures reliable readings and long service life. The metal-plastic construction provides durability without excessive weight.
Direct Replacement Simplicity
Because this sensor matches part number 68210084AA, installation is typically plug-and-play, requiring no wiring modifications. This reduces labour time for mechanics and makes it accessible to experienced DIYers.
Cost-Effective Maintenance
Replacing a worn or failed NOx sensor promptly can prevent costly damage to the SCR catalyst and avoid failed MOT emissions tests. This sensor offers a practical solution for maintaining vehicle compliance and driveability.
