Fitment

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

Vehicle applications include:
Audi A8
Audi Q5
Other VW Group diesel vehicles using OEM part number 8R0907807A / 5WK96728

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: Are 8R0907807A and 5WK96728 the same part?

A2: Yes. 8R0907807A is the OEM Audi/VW number and 5WK96728 is the Continental aftermarket reference for the same NOx sensor family.

Q3: Which vehicles commonly use this sensor?

A3: It is mainly used on Audi Q5 (8R platform) and Audi A8 diesel SCR systems (2014–2016 depending on engine code).

Q4: Where is this sensor installed?

A4: It is installed in the exhaust aftertreatment system, typically upstream or downstream of the SCR catalyst depending on configuration.

Q5: What are common failure symptoms?

A5:

• Engine warning light
• AdBlue / SCR system faults
• NOx signal errors
• Limp mode (reduced engine power)