Hella NOx sensor - product picture 1
Hella NOx sensor - product picture 1
Hella NOx sensor - product picture 2
Hella NOx sensor - product picture 3
Hella NOx sensor - product picture 4
Hella NOx sensor - product picture 5
Hella NOx sensor - product picture 6

NOx Sensor

The NOx sensor comprises a probe and a control unit. Via a cable harness these are firmly connected with each other to form a unit. This sensor unit is installed in the exhaust gas system and is used to recognize nitrogen oxides in the flow of exhaust gas.

The NOx sensor is an important component in the posttreatment system to reduce NOx, which is used in diesel vehicles with urea-based SCR systems (selective catalytic reduction). The sensor enables compliance with the stringent emission values starting from Euro 5 norm onwards. Consequently, the NOx sensor guarantees an optimal dosage of AdBlue by the engine system, thus bringing about an effective reduction of nitrogen oxides which are harmful to the environment.

HELLA's product portfolio in this area is continuously being expanded and further developed. Discover our high-quality NOx sensors.

  • Tested in accordance with HELLA quality standards

  • Complies with OEM specifications

  • The product has been developed with particular attention being given to resistance to engine vibrations and also to increased temperatures

  • NOx sensors are standard equipment on passenger cars, light and heavy commercial vehicles covering both Euro 5 & 6 applications

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HELLA NOx Sensors - How to identify the new part

In this animation, we’ll guide you through the process of identifying the correct NOx sensor for any vehicle using its Vehicle Identification Number (VIN).

Additional information on our NOx Sensor

Universal parts – spare parts that are not vehicle-specific

Universal parts – spare parts that are not vehicle-specific

The universal parts catalogue enables you to search for lighting and electrics/electronics products that are not vehicle-specific.

Universal parts catalogue

Vehicle-specific spare parts

Vehicle-specific spare parts

Our online catalogue is designed to make it easier for you to search for spare parts. This means that you can, for example, enter the relevant vehicle by using our comprehensive manufacturer list, the type designation or the engine code.

Vehicle-specific spare parts

Technical product information

Technical product information

In this database, you will find technical information about our products and specific vehicle systems – prepared by experienced technicians and mechanics.

Technical product information

Further technical information

exhaust gas recirculation
Basic Knowledge
Exhaust gas recirculation – EGR valve
Everything about the exhaust gas recirculation system: causes of defective EGR valves, their inspection and replacement - knowledge for the vehicle workshop.
Reading time: 12 minutes
Check rain sensor replace
Basic Knowledge
Rain sensor & headlight sensor testing
Diagnostic and repair instructions for the rain sensor - including video instructions for removing and installing the sensor.
Reading time: 10 minutes
NOx-Sensor - Mercedes Benz
Basic Knowledge
NOx-Sensor - Mercedes Benz
If a fault is diagnosed in the NOx sensor when troubleshooting an exhaust gas purification system, this can present a small challenge for a workshop.
Reading time: 7 minutes
Damage assessment starter motor
Basic Knowledge
Starter damage assessment
Faulty starter motor? Discover typical causes such as overloading or misfiring and how to repair damage effectively.
Reading time: 1 minute
Damage assessment starter motor
Basic Knowledge
Alternator damage assessment
How to diagnose damage to the alternator: from corrosion and short circuits to bearing damage.
Reading time: 1 minute
Service work on the loading system
Basic Knowledge
Service work on the charging system
Step-by-step instructions for servicing the charging system, including visual inspection and signal testing on the controller.
Reading time: 6 minutes
Keyless go
Basic Knowledge
Keyless Go & Keyless Entry system
Introduction to the Keyless Go system - from function and possible faults to diagnostics, ideal for vehicle workshops.
Reading time: 12 minutes
Technical product
Opel Various Models - Insufficient engine power
Reading time: 1 minute
Technical product
Renault Trafic - MIL (malfunction indicator lamp / engine warning light) comes on during longer downhill journeys
Reading time: 1 minute
Technical product
The Secondary Air System
Reading time: 2 minutes

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Parking sensors - Our product range
Weitere Sensoren
Automotive Sensors - Broad product range

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