Mercedes W906 OM651 Diesel Air Charge Intake Temperature Sensor A0009059305

Mercedes W906 OM651 Diesel Air Charge Intake Temperature Sensor is a precision component of the diesel engine intake system, responsible for measuring the air temperature in the intake manifold. A properly functioning sensor supports stable engine operation, correct fuel dosing, and boost pressure control. Choosing an original component for your Mercedes ensures that operating parameters remain consistent with the factory ECU settings.

Specifications and technical data

• SKU: A0009059305
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0009059305
• Substitutable numbers: A0009059305, A 000 905 93 05
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and role in the intake system

The presented air charge intake temperature sensor is dedicated to vehicles from the Mercedes W906 family with the OM651 engine, powered by diesel fuel. This component works with the intake and boost system, transmitting information about the current air temperature after the turbocharger or intercooler to the engine control unit. Based on this data, the ECU corrects the fuel dose, injection timing, and boost strategy, which influences engine refinement, performance, and exhaust emissions.

The sensor belongs to a group of components mounted within the system classified in the parts catalog as Lines, hoses, and pipes. In practice, this means integration with intake ducts, where tight seating and proper electrical harness routing are essential.

Benefits of using an original sensor

Using the correct air charge intake temperature sensor in the OM651 diesel engine provides a number of practical operational benefits:

• more stable engine operating parameters across the full load range,
• more predictable throttle response due to correct fuel dose corrections,
• support for the proper operation of exhaust emission control systems,
• reduced risk of overboost or underboost resulting from incorrect temperature readings,
• easier computer diagnostics – the controller receives a signal with parameters consistent with factory specifications.

For commercial vehicles based on the W906 platform, where the engine often operates under high load, a functional air charge intake temperature sensor has a direct impact on engine durability and performance consistency.

Product characteristics and condition

The offered item comes from the Mercedes brand, which means structural compatibility with the factory solutions used in the OM651 engine. The sensor is classified as used, making it an economical alternative to a new part while maintaining the original geometry, connector type, and mounting method in the intake duct.

In practice, this translates into:

• the possibility of direct replacement for a worn or damaged sensor,
• no need for electrical or mechanical modifications,
• preservation of the factory routing of lines and hoses within the intake system.

Application in OM651 diesel engines

The OM651 engine is a modern Mercedes diesel unit, where precise measurement of intake air parameters is crucial for the operation of the injection system and turbocharger. The air charge intake temperature sensor works with other diesel fuel system components, creating a coherent combustion condition control system. Replacing a faulty sensor is recommended if diagnostic errors related to intake air temperature, power loss, or unstable operation under load appear.

Selecting a component compatible with the W906 platform and the OM651 unit minimizes the risk of incorrect signal interpretation by the controller, which is particularly important in vehicles used intensively, e.g., in freight or passenger transport.

Complementary Mercedes intake system components

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as flexible intake sections, rigid pipe sections, or hose connectors, check the available parts in the Mercedes lines, hoses, and pipes category.

Additional technical and operational information

When replacing the air charge intake temperature sensor, it is recommended to pay attention to the condition of the mounting socket in the intake duct and the cleanliness of the electrical connector. Proper seating and protection against moisture and vibrations promote long-term, stable operation of the component. In the case of post-accident repairs or interference in the body zone near the engine compartment, it is also worth analyzing the routing of harnesses and lines to avoid mechanical stress on the sensor.

If you are interested in a broader context of using dismantled parts in vehicle repairs, including the selection of original components and service procedures, the following article may be helpful: Bodywork and chassis – post-accident repairs using dismantled parts.