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

Vehicle applications include:
Audi A6
Audi A7
Audi A8
Volkswagen Touareg
Volkswagen Passat
Other VW Group diesel vehicles using OEM part numbers 04G907807M / 4G0907807M / 5WK97267

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 injection and reduce emissions.

Q2: Where is this sensor installed?
A2: It is installed in the exhaust aftertreatment system, typically upstream or downstream of the SCR catalyst depending on configuration.

Q3: Are 04G907807M and 4G0907807M the same?
A3: Yes, they are closely related OEM references for the same sensor family, often used interchangeably depending on catalog system.

Q4: Is 5WK97267 an exact replacement?
A4: Yes, 5WK97267 is a common aftermarket cross-reference, but OEM number matching is still required for correct fitment.

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