Mercedes W207 W212 W217 W218 W222 Lambda Oxygen Sensor Probe A0095426318

Mercedes W207 W212 W217 W218 W222 Lambda Oxygen Sensor Probe is an original component from the Lambda sensors and O2 sensors group, designed for precise control of the air-fuel mixture in selected Mercedes models. This used OEM part ensures factory-fitment for the exhaust system and reliable engine control unit performance parameters, which translates into stable engine operation and proper emission system management.

Specifications and technical data

• SKU: A0095426318
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0095426318
• Substitutable numbers: A0095426318, A 009 542 63 18
• Category: Oxygen Sensors

Purpose and role in the engine control system

The presented lambda sensor is an OEM component from Mercedes, compatible with the factory engine control unit in W176, W204, W212, W221, and W906 series vehicles. The O2 sensor monitors the oxygen content in the exhaust gases and sends a signal to the ECU, which then adjusts the fuel dosage accordingly. This allows for maintaining the correct mixture ratio, reducing fuel consumption, and meeting emission standards.

A properly selected lambda sensor stabilizes engine operation under various load conditions, supports the correct functioning of the catalytic converter, and minimizes the risk of errors related to lean or rich mixtures.

Advantages of using an original Mercedes lambda sensor

Using an original O2 sensor instead of a worn or faulty component offers a number of practical operational benefits:

• factory fitment for the electrical and exhaust system of the specific model,
• correct signal characteristics for the engine control unit,
• stable operation at idle and under load,
• reduced risk of the check engine light appearing due to mixture-related errors,
• maintenance of exhaust emission control system efficiency.

By maintaining the manufacturer's original specifications, replacing with such a component helps avoid compatibility issues that may occur with some aftermarket replacements.

Product characteristics and compatibility

The offered lambda sensor belongs to the Lambda sensors and O2 sensors category, meaning it is designed to operate in the demanding environment of the exhaust system. The OEM design is engineered for appropriate thermal, chemical, and mechanical resistance, as well as maintaining the correct response dynamics to changes in exhaust gas composition.

Before purchasing, it is worth verifying the part's compatibility with the specific engine version of the vehicle using the OEM number or vehicle data (VIN). This allows for selecting a component that will work with the existing wiring, controller, and exhaust system without the need for modifications.

Product condition and practical installation aspects

The item is offered in used condition, which in practice represents an attractive compromise between repair costs and maintaining the manufacturer's original specifications. This type of solution is particularly beneficial when servicing older generations of vehicles, where both reliability and operational economy are important.

When installing the lambda sensor, it is recommended to:

• check the thread in the manifold or exhaust pipe socket,
• use appropriate assembly paste designed for sensors (without contaminating the sensing element),
• check the condition of the wiring and electrical connectors before connection.

More solutions and technical knowledge

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

To better understand the specifics of selecting and installing used sensors and control modules, it is worth reading our practical guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

Additional arguments for choosing original, used OEM components are provided in the article: 5 reasons why a used OEM part is a better choice than an aftermarket replacement, which discusses, among other things, fitment, durability, and the lack of need for installation modifications.