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The NOx sensor is a central component of exhaust aftertreatment. It consists of
a probe and a control unit, is integrated into the exhaust system as a complete unit,
and detects nitrogen oxides (NOx) in the exhaust flow. Its use ensures compliance
with strict emission standards such as Euro 5 and Euro 6.
Note: Due to the high technical complexity and the required measurement accuracy,
the use of replacement parts in OE quality is recommended.
NOx sensor A1039112 Mercedes-Benz 12V | A 000 905 91 12 | Passenger...
This high-quality NOx sensor (A1039112) for Mercedes-Benz monitors nitrogen oxide levels in the exhaust system and, together with the SCR catalytic converter (AdBlue), regulates emissions in accordance with the Euro 6 standard.
It operates reliably with a 12 V onboard voltage and provides precise measurement signals to the engine control unit (ECU), ensuring compliance with emission limits and preventing error messages (e.g., NOx efficiency). Manufactured to OE quality: robust sensor design with integrated control unit, heat-resistant electronics, and corrosion-proof connectors ensure a long service life even under high exhaust temperatures. Installation is straightforward: remove the old sensor, disconnect the connector, install the new sensor, and lock the plug; then clear error codes and perform a short test drive. Technical information: vehicle-specific connector, pre-assembled wiring harness; cable length and pin configuration comply with OE specifications of the listed references. Compatible with common Euro 6 diesel engines from the Mercedes-Benz platform. Fast delivery and warranty included.
Matching OE numbers: A 000 905 91 12, A 000 905 71 08, A 000 905 30 09, A 000 905 47 04, 4326769, 2139930.
Euro 6 compatible, suitable for SCR/AdBlue systems
• OE quality: precise fit & long-lasting
• For Mercedes-Benz – see references below
• Fast feedback to the ECU for stable emissions
• Heat-resistant housing & corrosion-proof connector
• Easy installation, no adjustments required
• Fast delivery, warranty included
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