Mercedes W204 W212 OM651 Fuel Pump Feed Pipe Pressure Line Sensor A6510703081

Mercedes W204 W212 OM651 Fuel Pump Feed Pipe Pressure Line Sensor is an original fuel system component designed for OM651 diesel engines. As part of the Lines, hoses and pipes group, it is responsible for a stable connection between the sensor and the fuel system, which translates into accurate pressure readings and safe operation of the power unit. Using this OEM component allows you to maintain the factory operating parameters of the diesel engine without the need for unreliable replacements.

Specifications and technical data

• SKU: A6510703081-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510703081
• Substitutable numbers: A6510703081, A 651 070 30 81
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The fuel pressure sensor line in the OM651 engine is responsible for the precise delivery of fuel or the transmission of signals from the sensor to the fuel injection control components. In diesel units, a correct pressure reading on the fuel rail is crucial for:

• stable idle operation,
• correct fuel dosing under load,
• maintaining proper combustion parameters,
• reducing smoke and power loss. Thanks to the use of an original line, the proper geometry, diameter, and rigidity of the component are maintained, which minimizes the risk of leaks and sensor reading errors.

Benefits of using an original Mercedes line

In high-pressure diesel systems, it is particularly important to use components that comply with factory specifications. This line ensures:

• compatibility with the OM651 engine used in Mercedes W204 and W212 models,
• adequate resistance to the operating pressure and temperature of the diesel unit,
• correct routing of the line in the engine compartment, which limits the risk of abrasion and mechanical damage,
• consistency with the factory engine control system, without the need for adaptation or modifications. A used OEM component is a sensible choice when servicing a diesel fuel system – it allows you to maintain high quality while optimizing repair costs.

Product characteristics and condition

The offered line comes from dismantling and is classified as used, which means it may show signs of wear typical for a part operating in the engine compartment. At the same time, it retains the functionality required for further operation in the fuel system. Such components are particularly important in diesel engines, where fuel pressure stability has a direct impact on the engine's refinement and injector durability. Before installation, it is recommended to perform a standard visual inspection of the line and connectors, as well as to verify compatibility with your vehicle based on the OEM part number and interchangeable numbers available in the technical specifications.

Application in OM651 diesel engines

The OM651 diesel engines used in Mercedes W204 and W212 models utilize an advanced injection system, where the fuel pressure sensor works with a line of specific parameters. Using the correct component:

• reduces the risk of engine control unit errors related to fuel pressure,
• helps maintain the proper dynamics and flexibility of the power unit,
• supports the correct operation of emission control systems. For users who operate their cars mainly in urban or mixed cycles, a functional fuel pressure sensor line is an important element of prevention against costly fuel injection system failures.

Expanding Mercedes fuel system service

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 fuel lines, hoses, or pipes, check the available parts in the Mercedes lines, hoses and pipes category. When planning fuel system repairs, it is also worth checking out practical tips on selecting used components, which help optimize service costs without sacrificing quality – more information can be found in the article Post-accident repair of your car: why are used body parts a better choice than replacements?.