Vauxhall Zafira NOx Sensor & Control Unit 55485442 / LW5442S / 5WK97247 OEM – Everything You Need to Know

Introduction

At www.automanspareparts.com, we take pride in being the No. 1 global supplier of OEM nitrogen oxide (NOx) sensors. Our catalog includes a vast range of NOx sensors and control units for top European, Asian, and American vehicles — including the Vauxhall Zafira, known for its reliable diesel engines and modern emission systems.

One of the most crucial components ensuring the Zafira’s engine runs efficiently and cleanly is the NOx Sensor & Control Unit (55485442 / LW5442S / 5WK97247 OEM). Let’s explore its role, specifications, and compatibility in detail.

What is a Vauxhall Zafira NOx Sensor & Control Unit?

The NOx (Nitrogen Oxide) Sensor & Control Unit measures the amount of nitrogen oxides in the exhaust gases. This information is essential for the engine control module (ECU) to regulate fuel combustion, improve efficiency, and meet emission standards.

The control unit integrated into the sensor processes real-time data and helps maintain the Selective Catalytic Reduction (SCR) system’s performance, reducing harmful emissions.

OEM Numbers and Cross References

Key Features & Benefits

• OEM Quality: Genuine manufacturing ensures perfect fit and reliable performance.

• Emission Compliance: Keeps your Zafira compliant with Euro 5/6 standards.

• Improved Fuel Efficiency: Helps optimize combustion for lower fuel consumption.

• Durability: Designed for high-temperature exhaust environments.

• Plug-and-Play Fit: Easy replacement with factory connectors.

Compatibility Table

Common Symptoms of a Failing NOx Sensor

• Check engine light or emission warning

• Reduced fuel efficiency

• Engine performance drop

• Failed MOT / emission test

• Increased AdBlue consumption

If you notice these issues, it’s time to replace your NOx sensor with a genuine OEM 55485442 / 5WK97247 available at AutoMan Spare Parts.

Why Choose AutoMan Spare Parts

At AutoMan Spare Parts, we provide:

• 100% OEM & Genuine NOx Sensors

• Worldwide Shipping (USA, Mexico, UK, Europe, GCC, and beyond)

• Competitive pricing with quality assurance

• Expert support for part identification and installation guidance

We are proud to be the world’s No. 1 source for OEM Nitrogen Oxide Sensors, trusted by workshops, fleet owners, and car enthusiasts across continents.

Technical Specifications

TL;DR

• Part Name: Vauxhall Zafira NOx Sensor & Control Unit

• Part Numbers: 55485442 / LW5442S / 5WK97247

• Function: Monitors NOx gases to maintain efficient combustion and lower emissions

• Fitment: Compatible with Vauxhall Zafira B/C 1.7 & 2.0 CDTi engines

• Buy From: www.automanspareparts.com – No. 1 global OEM NOx sensor supplier

FAQ

Q1: What is the lifespan of a Vauxhall Zafira NOx sensor?
A: Typically between 80,000–100,000 km depending on driving and fuel quality.

Q2: Can I use an aftermarket NOx sensor instead of OEM?
A: OEM sensors like 55485442 / 5WK97247 are strongly recommended for reliability and performance.

Q3: Is the NOx sensor easy to replace?
A: Yes, with the right tools and a basic understanding of your exhaust system. However, professional installation is preferred.

Q4: Does this sensor fit other Opel or GM models?
A: Yes, including Astra J, Insignia, and Chevrolet Cruze diesel variants.

Q5: Why buy from AutoMan Spare Parts?
A: We’re the global No. 1 supplier of OEM nitrogen oxide sensors — offering genuine quality, verified stock, and fast delivery worldwide.