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

Vehicle applications include:
Audi Q7
Audi Q8
Volkswagen Touareg
Bentley Bentayga

Other VW Group MLB EVO diesel platforms using OEM part number 4M0907807AA

FAQ

Q1: What is the function of this NOx sensor?
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 4M0907807AA an OEM part number?
A2: Yes. It is a Volkswagen Group OEM NOx sensor used in modern MLB EVO diesel SCR systems.

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

Q4: Is this interchangeable with other 4M sensors like SNS710 or SNS708?
A4: Not always. Even within the same platform, calibration and connector versions differ, so exact OEM matching is required.

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