This high-quality VEMO NOx sensor (V10-72-0309) is a direct replacement for Genuine Part Number Reference: 4M0907807BL.

The NOx sensor (nitrogen oxide sensor / AdBlue urea injection sensor) monitors the nitrogen oxide content in the exhaust gas and reports it to the engine control unit, which regulates AdBlue/DEF dosing into the SCR system to reduce harmful emissions. A faulty sensor commonly triggers a check engine light, increased AdBlue and fuel consumption, and emissions faults.

This part is also known as a nitrogen oxide sensor, NOx probe, AdBlue sensor, urea injection sensor, and SCR emission sensor.

Genuine Part Number Reference: 4M0907807BL
Interchange / superseded numbers: 4M0907807AJ
Supplier reference: VEMO V10-72-0309

Key Features:

  • Direct replacement for OEM part number 4M0907807BL
  • Manufactured to meet or exceed OEM specifications
  • Durable construction with laser-welded, sealed housing
  • Factory-style fit and plug-in connection
  • Helps maintain correct emissions control and protects the SCR catalyst

Compatible With:

  • Audi Q7 (4M) 3.0 TDI – 2015 to 2019
  • Audi Q8 (4MN) 3.0 TDI – 2018 to 2020

Engine Codes: CRT, CRTC, CRTD, CVZA

Year Range: 2015, 2016, 2017, 2018, 2019, 2020

This is an aftermarket replacement part, not a genuine Audi component.

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