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Vauxhall Zafira NOx Sensor & Control Unit 55485442 / LW5442S / 5WK97247 OEM
Genuine NOx Sensor with Integrated Control Module for Vauxhall / Opel Zafira diesel models.
This unit — part numbers 55485442, LW5442S, and 5WK97247 — monitors Nitrogen Oxides (NOx) in the exhaust system and communicates with the ECU to regulate the SCR/AdBlue system, maintain emissions compliance, and ensure efficient engine operation.
A faulty NOx sensor often causes:
AdBlue system warnings
Reduced power / limp mode
Poor fuel economy
Emission system fault lights
This OEM sensor restores correct functionality and stable driving performance.
| Model | Engine | Year Range | Part Numbers |
|---|---|---|---|
| Zafira / Zafira Tourer | 2.0 CDTi Diesel | 2011–2017 | 55485442 / 5WK97247 / LW5442S |
| Astra (select models) | 2.0 CDTi | Match part number | 5WK97247 |
| Insignia (some variants) | 2.0 CDTi | Match part number | 55485442 |
(Always check your original NOx sensor number before purchase — Opel/Vauxhall uses multiple versions.)
Genuine OEM NOx Sensor with control module
Continental / VDO series (5WK97247)
Ensures accurate NOx measurement for SCR/AdBlue systems
Helps prevent limp mode and emissions faults
High temperature–resistant probe design
Direct plug-and-play replacement for matching part numbers
Used OEM part
Fully tested and in excellent working condition
Clean connectors and intact wiring
After installation:
Clear NOx/SCR fault codes
Some vehicles may require sensor initialization/adaptation
Fitment position: usually downstream NOx sensor on the exhaust system
Vauxhall Zafira NOx Sensor, Opel Zafira 55485442, 5WK97247 NOx Control Module, LW5442S, VDO NOx Sensor Opel, Zafira Tourer Diesel NOx Sensor, SCR Emission Sensor GM Diesel, OEM NOx Sensor 2.0 CDTi
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All orders are processed within 1-2 business days. Orders placed on weekends or holidays will be processed the next business day. You will receive a tracking number once your order has shipped, so you can track your package every step of the way.
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