Fitment
Compatible with Volkswagen Group Euro 6 diesel SCR (AdBlue) systems

Vehicle applications include:
Audi Q7
Audi Q8
Volkswagen Touareg
Other VW Group MLB EVO diesel platforms using OEM part number 4M0907807G / SNS711A / 5WK97309

FAQ

Q1: What is this NOx sensor used for?
A1: It measures nitrogen oxide levels in diesel exhaust and sends data to the SCR system to control AdBlue (DEF) injection and reduce emissions.

Q2: Is 4M0907807G the same as SNS711A?
A2: Yes, 4M0907807G is the OEM VW/Audi number and SNS711A is the Continental sensor reference for the same NOx sensor family.

Q3: Where is this sensor installed?
A3: It is installed in the exhaust aftertreatment system, typically as an SCR inlet or outlet sensor depending on engine configuration.

Q4: Is this used across multiple models?
A4: Yes, it is commonly used on Audi Q7, Q8 and VW Touareg 3.0 TDI / V6 diesel SCR systems.

Q5: What are common failure symptoms?
A5: Engine warning light, AdBlue/SCR system faults, NOx signal errors, or limp mode activation.