Mercedes W205 W246 Lambda Oxygen Sensor Probe Hybrid Engine 0075426418

Mercedes W205 W246 Lambda Oxygen Sensor Probe Hybrid Engine is a precision oxygen sensor from the Lambda sensors and O2 sensors category, designed for the exhaust systems of modern powertrains. This component supports the proper operation of the engine control unit, enabling stable regulation of the air-fuel mixture composition and reducing exhaust emissions in Mercedes vehicles with hybrid drive.

Specifications and technical data

• SKU: 0075426418
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: 0075426418
• Substitutable numbers: A0009050701, A 000 905 07 01
• Category: Oxygen Sensors

Purpose and function in the powertrain

The described lambda sensor has been designed for Mercedes W205 and W246 models equipped with a hybrid engine. The sensor monitors the oxygen content in the exhaust gases, sending a signal to the engine control unit, which adjusts the fuel dose based on this data. A properly functioning sensor supports:

• stable operation of the powertrain across the full load range,
• maintenance of the optimal mixture composition in both hybrid and combustion modes,
• catalytic converter efficiency and reduction of harmful emissions.

Benefits of using an original lambda sensor

Choosing an original component from the Lambda sensors and O2 sensors category has a direct impact on the performance of the powertrain. Using the correct oxygen sensor allows you to:

• reduce the risk of engine control unit errors and entering limp mode,
• maintain predictable throttle response,
• preserve compliance with the factory operating characteristics of the hybrid unit.

As a result, the vehicle maintains consistent behavior in both city traffic and at higher speeds, and the exhaust system works with the drive electronics in accordance with the manufacturer's specifications.

Characteristics of the used component

The offered lambda sensor is a used component, sourced from dismantling. Such components are a popular choice as a service solution when the goal is to maintain the original specification while optimizing repair costs. In the case of oxygen sensors, it is essential to select a part that is structurally compatible with the specific version of the hybrid engine and the exhaust system of the particular Mercedes model.

Selection and integration with vehicle electronics

The lambda sensor works directly with the engine control system, which is why matching it to the specific vehicle configuration is crucial. Before purchasing, it is worth verifying compatibility with factory markings and the engine version. A correctly selected sensor:

• ensures correct signal interpretation by the control unit,
• minimizes the need for additional software adaptation,
• facilitates quick installation in place of the factory component.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components 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.

Used electronics and sensors – practical tips

When selecting used sensors for modern powertrains, it is worth considering not only the price but also the technical compatibility and the origin of the component. In the case of lambda sensors, this is particularly important due to their impact on the operation of the engine control unit and the exhaust emission control system. If you want to better understand when choosing used electronic components is justified and how to minimize risks during such purchases, see the article The second life of electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?.