Mercedes-Benz C CLK W202 W208 Petrol Lambda Oxygen Sensor Probe A0015407117

Mercedes-Benz C CLK W202 W208 Petrol Lambda Oxygen Sensor Probe is a precision oxygen sensor designed for petrol engine exhaust systems, responsible for the correct adjustment of the air-fuel mixture composition. As an item from the Lambda sensors and O2 sensors category, it works with the engine control electronics, stabilizing the operating parameters of the powertrain. Using an original component allows for a technically correct repair without the need to resort to replacements with uncertain parameters.

Specifications and technical data

• SKU: A0015407117
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0015407217
• Fuel type: Petrol
• Category: Oxygen Sensors

Application and function in the engine system

The described lambda sensor is intended for Mercedes-Benz C-Class and CLK models of the W202 and W208 generations with petrol engines. The sensor monitors the oxygen content in the exhaust gases, sending a signal to the engine control unit, which then adjusts the fuel dose accordingly. This makes it possible to maintain stable engine operation, reduce fuel consumption, and lower exhaust emissions to levels consistent with the manufacturer's design specifications.

In a properly functioning exhaust system, the lambda sensor is one of the key elements of the feedback loop, influencing:

• maintaining the correct air-fuel ratio across a wide range of loads,
• efficient operation of the three-way catalytic converter,
• stable idle speed and smooth acceleration,
• reducing the risk of overheating exhaust system components.

Benefits of using an original lambda sensor

Choosing an original lambda sensor dedicated to specific Mercedes-Benz models allows for maintaining compliance of electrical characteristics and response times with the maps stored in the engine control unit. This translates into:

• stable petrol engine operating parameters across the full range of operating temperatures,
• reduced risk of error codes in the control unit memory related to the air-fuel mixture,
• more predictable vehicle behavior during acceleration and deceleration,
• maintaining factory performance and engine refinement.

Using an original component is a particularly attractive solution for maintenance repairs, where a combination of correct technical parameters and reasonable service costs is important.

Technical characteristics and compatibility

The lambda sensor is designed to work with petrol engines, where the control unit uses the signal from the oxygen sensor for ongoing fuel dose adjustment. The design and electrical parameters are matched to the control systems used in the Mercedes-Benz C and CLK W202/W208 generations, which facilitates installation and integration with the existing electrical harness.

Before purchasing, it is recommended to verify compatibility with the specific engine version and vehicle year based on the manufacturer's catalog data or the OEM part number provided in the technical specifications. This helps avoid issues with connector fitment, wire length, and output signal characteristics.

Component condition and practical installation aspects

The offered lambda sensor is a used component, which in practice means it has been removed from a vehicle and verified for further use. This type of solution is often chosen when servicing older generations of Mercedes-Benz, where maintaining compatibility with factory electronics and optimizing repair costs is key.

During installation, it is recommended to:

• check the condition of the thread in the manifold or exhaust pipe socket,
• use a proper lambda sensor wrench to avoid damaging the sensor housing,
• inspect the wiring harness for abrasions and tension after installation,
• perform adaptation or clear error codes in the engine control unit after replacement, if required by service procedures.

Expert support and selection of used electronics

If you want to better understand when choosing used electronic components – such as engine control units, comfort modules, or sensors – is technically and economically justified, check out the practical tips in the article The second life of electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?. You will find advice there on how to make informed purchasing decisions in the field of automotive electronics.

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