FITMENT
Compatible with Vauxhall / Opel diesel vehicles equipped with SCR (Selective Catalytic Reduction) systems requiring NOx monitoring.
Common applications include Euro 5 / Euro 6 diesel engines using reference 5WK97418 / 55589456.

FAQ
Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide (NOx) levels in the exhaust system and sends real-time data to the ECU to control AdBlue/DEF injection and maintain emissions compliance.

Q2: Where is it installed?
A2: It is installed in the exhaust system, typically before or after the SCR catalyst depending on vehicle configuration.

Q3: What are symptoms of failure?
A3: Check engine light, SCR/AdBlue system warnings, NOx sensor fault codes, and possible limp mode or reduced engine performance.

Q4: Is it compatible with all Opel/Vauxhall models?
A4: No, compatibility depends on engine code, emissions standard, and SCR system layout.