Fitment

Opel Vauxhall diesel vehicles with SCR AdBlue Euro 6 emission system including

• Opel Zafira Tourer C 1.6 CDTi diesel
• Vauxhall Zafira Mk III 1.6 CDTi diesel
• Opel Insignia B 1.6 CDTi diesel (selected SCR versions)
• Selected GM 1.6 diesel SCR applications

OE reference
55485493
5WK97263
855610
855599

FAQ

What is this NOx sensor used for

It measures nitrogen oxide levels in diesel exhaust gas and sends data to ECU for SCR AdBlue emission control system

Is this inlet or outlet sensor

It can be used as inlet or outlet depending on SCR system layout and vehicle configuration

Are all 55485493 sensors interchangeable

No Opel Vauxhall NOx sensors are ECU coded and must match exact OE number and calibration version

What system does it work with

SCR Selective Catalytic Reduction system using AdBlue injection for Euro 6 diesel emission compliance

What are common failure symptoms

Engine warning light SCR AdBlue fault reduced power limp mode NOx sensor communication error and emission efficiency faults