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

Vehicle applications include:
Audi A4
Audi A5
Audi A6
Audi A7
Volkswagen Touareg

Other VW Group diesel platforms using OEM part number 8K0907807F / 5WK96689

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) dosing 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 engine configuration.

Q3: Is 8K0907807F interchangeable with 5WK96689?
A3: Yes, 8K0907807F is the OEM number and 5WK96689 is a Continental aftermarket reference for the same sensor family.

Q4: Is this used only in 3.0 TDI engines?
A4: Yes, it is most commonly used in VW Group 3.0 V6 TDI SCR systems (Audi A4–A7 and VW Touareg).

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