Fitment

Compatible with GM / Opel / Vauxhall Euro 6 diesel SCR (AdBlue) systems

Vehicle applications include:
Opel Zafira Tourer C
Vauxhall Zafira Mk III
Chevrolet (selected Euro 6 diesel models)
Other GM 1.6 CDTi diesel SCR vehicles using OEM 55485443 / 5WK97246

FAQ

Q1: What is this NOx sensor used for?

A1: It measures nitrogen oxide (NOx) levels in diesel exhaust and sends data to the SCR system to control AdBlue (DEF) injection and reduce emissions.

Q2: Are 55485443 and 5WK97246 the same part?

A2: Yes.

• 55485443 = OEM Opel / Vauxhall part number
• 5WK97246 = Continental reference number
  They refer to the same NOx sensor used in GM 1.6 CDTi SCR systems.

Q3: Where is this sensor installed?

A3: It is installed in the exhaust aftertreatment system, usually as an SCR inlet or outlet NOx sensor depending on vehicle configuration.

Q4: Which engines use this sensor?

A4: Mainly 1.6 CDTi diesel engines used in Opel Zafira Tourer and related GM diesel platforms.

Q5: What are common failure symptoms?

A5:

• Engine warning light
• AdBlue / SCR system fault
• NOx signal error
• Limp mode (reduced power)