Lambda Sensor Mercedes W176 W242 Diesel CDI Oxygen Probe A0105422618

Lambda Sensor Mercedes W176 W242 Diesel CDI Oxygen Probe is a specialized lambda sensor designed for CDI diesel engines in Mercedes A-Class and B-Class models. This component is responsible for the precise measurement of oxygen content in exhaust gases, which allows the engine control unit to ensure more stable engine operation and reduce fuel consumption. Using an original component is a sensible choice when servicing the exhaust system in diesel vehicles.

Specifications and technical data

• SKU: A0105422618
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0105422618
• Substitutable numbers: A0105422618, A 010 542 26 18
• Fuel type: Diesel
• Category: Oxygen Sensors

Purpose and function of the lambda sensor in Mercedes Diesel CDI

The lambda sensor in a CDI diesel engine is responsible for monitoring exhaust gas composition and transmitting a signal to the engine control unit. This enables:

• more accurate fuel dosing under various load conditions,
• maintaining proper operation of the injection system,
• support for exhaust gas treatment systems, such as the diesel particulate filter (DPF),
• reduction of smoke and improvement of engine performance culture.

In the case of Mercedes W176 and W242 diesel models, a functional lambda sensor is crucial for maintaining correct injection system parameters and compliance with emission standards.

Benefits of using an original Mercedes lambda sensor

Using an original lambda sensor from the Lambda sensors and O2 sensors category ensures proper compatibility with the factory engine control unit software. In practice, this means:

• correct signal interpretation by the ECU without the need for adaptation,
• stable idle speed and better throttle response,
• reduced risk of errors related to fuel mixture and exhaust emissions,
• more predictable vehicle behavior across a wide range of temperatures and loads.

A used original component is often more reliable than cheap replacements, especially in advanced diesel units where the quality of the sensor signal is significant for the operation of the entire system.

Performance parameters and application in diesel engines

The presented lambda sensor is designed for systems powered by diesel fuel, which means it is adapted to the specific operating requirements of CDI diesel engines. In these types of units:

• the sensor operates under high-temperature conditions and variable exhaust gas composition,
• resistance to contaminants typical of diesel engines is required,
• signal stability over a long service life is essential.

By properly selecting the sensor for the fuel type, you can reduce the risk of incorrect readings that could lead to increased fuel consumption or a drop in performance.

Product condition and installation aspects

The offered lambda sensor is in used condition, which allows for an economical repair of the exhaust system while maintaining the manufacturer's original specifications. Before installation, it is recommended to perform a standard check of the electrical wiring and the thread in the manifold or exhaust pipe to ensure proper electrical contact and mechanical tightness of the connection.

Replacing the lambda sensor in most cases does not require interference with other components; however, after installation, it is worth performing computer diagnostics to clear any potential errors and verify engine operating parameters.

More items from the Lambda sensors and O2 sensors Mercedes category

If you are planning a comprehensive repair or upgrade of the exhaust system area in your Mercedes and need other components from the same group, such as additional sensors before and after the filter, oxygen sensors, or exhaust gas temperature sensors, check the available parts in the Lambda sensors and O2 sensors Mercedes category.

How to safely choose used electronics and sensors?

When selecting a used lambda sensor and other electronic components, it is worth knowing the basic principles of verifying compatibility and technical condition. Practical tips on choosing used controllers, modules, and sensors can be found in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which will help you make an informed decision when purchasing and installing such components.