Mercedes-Benz C CLK W202 W208 Petrol Lambda Oxygen Sensor Probe A0015407317

Mercedes-Benz C CLK W202 W208 Petrol Lambda Oxygen Sensor Probe is an original exhaust system component from the Lambda sensors and O2 sensors group, designed for petrol-powered engines. This precise oxygen content sensor supports the proper operation of the engine control unit, which translates into stable engine performance and exhaust emission control.

Specifications and technical data

• SKU: A0015407317
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0015407317
• Fuel type: Petrol
• Category: Oxygen Sensors

Function and application of the lambda sensor

The lambda sensor in petrol Mercedes C and CLK W202/W208 series models is responsible for monitoring the air-fuel mixture composition in the exhaust system. Based on the signal from the sensor, the engine control unit adjusts the fuel dose to maintain the most uniform combustion possible and reduce excessive fuel consumption.

A functional O2 sensor helps reduce the risk of running on a mixture that is too lean or too rich, which can affect exhaust gas temperature, the condition of the catalytic converter, and the overall durability of the power unit. Replacing a worn-out sensor with a functional component allows for the restoration of correct engine operating parameters and stable idle speed.

Benefits of using an original Mercedes lambda sensor

Choosing an original lambda sensor dedicated to specific Mercedes C and CLK models ensures:

• proper cooperation with the factory engine control unit,
• appropriate signal characteristics across the full operating temperature range,
• better repeatability of readings compared to generic replacements,
• preservation of factory exhaust emission standards.

Thanks to this, the petrol supply system can operate under stable conditions, and the response to changes in load and temperature remains predictable. This is particularly important in vehicles used daily, where parameter repeatability and ease of diagnostics are essential.

Product characteristics and installation

The presented lambda sensor belongs to the Lambda sensors and O2 sensors group, meaning it is a measuring element in the exhaust system, not a mechanically stressed part. The product comes from dismantling, which allows for combining an attractive purchase cost with maintaining the manufacturer's original specifications.

During installation, it is recommended to:

• check the thread of the socket in the manifold or exhaust pipe,
• inspect the electrical harness for abrasions and contact corrosion,
• perform adaptation or clear error codes in the engine control unit after replacement, if required by the service procedure.

Such an approach facilitates subsequent diagnostics and allows for quick verification of whether the mixture control system is operating within the expected range.

Selection by OEM number and purchase security

Selecting a lambda sensor for a specific vehicle should be based on the OEM number and data from the manufacturer's catalog. This helps avoid issues with cable length, connector type, or signal characteristics. In case of doubt, information from service documentation or consultation with a workshop specializing in the Mercedes brand may be helpful.

If you want to deepen your knowledge about the feasibility of using used sensors and other electronic components in a car, you will find practical tips in the article Used car electronics on board – why is it worth choosing second-hand ECU modules and sensors?. It is a valuable source of information on selection by OEM number, compatibility, and proper installation.

Additional information on how to safely buy used components online is discussed step-by-step in the guide Safe purchase of used car parts online – a step-by-step guide, which can be helpful for both individual users and workshops.

Expanding the measurement system in your Mercedes

If you are planning a comprehensive repair or upgrade of the exhaust and mixture control area in your Mercedes and need other components from the same group, such as additional oxygen sensors, pre- and post-catalytic converter probes, or measuring elements in the exhaust path, check the available parts in the Mercedes Lambda sensors and O2 sensors category.