Fitment

Fits for:

• Audi A6 (C7 / 4G chassis) 3.0 TDI diesel
• Audi A7 (4G Sportback) 3.0 TDI diesel
• Volkswagen / VAG 3.0 V6 TDI SCR (AdBlue) systems
• Select Porsche Cayenne / VW Touareg 3.0 TDI applications depending on emissions setup
• Engine: 3.0 V6 TDI (CNRB / CASA / CJMA / related engines)
• Position: Exhaust NOx sensor (SCR inlet or outlet depending on configuration)
• OE / Cross References: 4G0907807AB / 4G0907807M / SNS458 / AAA9188880000 / 5WK97212 / 4G0 907 807AB family

FAQ

Q1: Are 4G0907807AB and SNS458 the same sensor?
A1: Yes. 4G0907807AB is the Volkswagen Group OE number, while SNS458 is the Continental/Vitesco reference used for the same NOx sensor module in VAG SCR systems.

Q2: What vehicles use this sensor?
A2: It is commonly used on Audi A6 and A7 3.0 TDI diesel models with SCR (AdBlue) emissions systems, mainly in the 4G platform.

Q3: Is this inlet or outlet sensor?
A3: It can be used as inlet or outlet depending on exhaust configuration. VAG often uses the same sensor type in different positions with different harness lengths.

Q4: What does this sensor do?
A4: It measures nitrogen oxide (NOx) levels in the exhaust and sends data to the ECU to control AdBlue dosing, ensuring emissions compliance and SCR efficiency.