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Mercedes-Benz Nox Sensor

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Mercedes-Benz NOx sensor products

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Mercedes-Benz NOx Sensor Sourcing Guide

A practical entry point for buyers searching Mercedes-Benz NOx sensor replacements by OE number, part photo, vehicle application or supplier SKU.

Page scope: Mercedes-Benz diesel NOx sensor sourcing and cross-reference checks. For DEF/AdBlue tank level assemblies, use the Mercedes-Benz AdBlue level sensor page instead.
Mercedes-Benz NOx sensor5WK / A-number cross referenceUpstream / downstreamSample checkoutBulk RFQ
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  • OE/OEM number from the old part or diagnostic record
  • Connector shape and pin count
  • Sensor position: upstream / downstream / tank header location
  • Vehicle, engine or SCR system application
  • Quantity, destination and sample vs bulk order path

OE/OEM numbers and vehicle names are used for cross-reference and sourcing identification only. SHR Autoparts does not claim brand authorization or guaranteed fitment unless confirmed in writing for your sample, connector, voltage, position and application.

Mercedes-Benz uses NOx sensors in some of its diesel models. The location of the NOx sensor varies depending on the model. In some models, the NOx sensor is located in the exhaust manifold, while in other models, it is located in the exhaust pipe.

NOx sensors are typically made of zirconium oxide, which is a semiconductor material. When NOx is present in the exhaust gas, it reacts with the zirconium oxide, causing a change in the electrical resistance of the sensor. This change in resistance is then converted into an electrical signal that is sent to the engine computer. The engine computer uses this signal to adjust the fuel injection and air intake to reduce NOx emissions.

NOx sensors are an important part of the emissions control system on diesel vehicles. By measuring the amount of NOx in the exhaust gas, NOx sensors help to ensure that NOx emissions are kept within legal limits.

Common Mercedes-Benz NOx sensor applications

  • NOx Sensor 0009053503 – Used in the following models:
    • GL350
    • GLE350
    • GLE400
    • ML250
    • ML320
    • ML350
    • ML400
    • R320
    • R350
    • Sprinter 2500
    • Sprinter 3500
  • NOx Sensor 5WK96682C – Used in the following models:
    • C300 BlueTEC
    • E320 BlueTEC
    • GL350 BlueTEC
    • GLE350 BlueTEC
    • GLE400 BlueTEC
    • ML320 BlueTEC
    • ML350 BlueTEC
    • ML400 BlueTEC
    • R320 BlueTEC
    • R350 BlueTEC
    • Sprinter 2500 BlueTEC
    • Sprinter 3500 BlueTEC
  • NOx Sensor A000905911264 – Used in the following models:
    • GLS450 4MATIC
    • GLS580 4MATIC
    • S580 4MATIC
  • 2872948NX – Used in the following models:
    • Cascadia
    • Columbia
    • Coronado
    • M2
    • SD
    • Sprinter
  • 2872946 – Used in the following models:
    • Cascadia
    • Columbia
    • Coronado
    • M2
    • SD
    • Sprinter
  • 4326873 – Used in the following models:
    • Cascadia
    • Columbia
    • Coronado
    • M2
    • SD
    • Sprinter
  • 5WK96741 – Used in the following models:
    • Cascadia
    • Columbia
    • Coronado
    • M2
    • SD
    • Sprinter

Please note that this is not an exhaustive list. For more information on which Mercedes-Benz models use NOx sensors, please consult your owner’s manual or contact a Mercedes-Benz dealer.

Available Mercedes Benz Nox Sensor products

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Brand NOx Sensor Technical Reference

This brand reference diagram highlights the Mercedes-Benz / Daimler diesel SCR system, NOx monitoring point, connector fitment, and OE number checks used when sourcing replacement NOx sensors.

Mercedes-Benz NOx sensor technical diagram showing SCR aftertreatment monitoring point and sourcing checklist
Mercedes-Benz NOx sensor diagram showing SCR monitoring point, inlet and outlet positions, and OE number matching notes.