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

Mercedes W204 W212 OM651 Fuel Pressure Pump Feed Pipe Line Sensor is an original diesel engine fuel system component designed for OM651 diesel-powered units. It ensures a stable connection between the sensor and the fuel system, which translates into precise pressure readings and proper engine operation.

Specifications and technical data

• SKU: A6510703081
• 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 described pipe is a component connecting the fuel pressure sensor to the fuel supply system in OM651 series diesel engines used in Mercedes C-Class W204 and E-Class W212 models. It is responsible for safely routing high-pressure fuel and maintaining a seal at the critical measurement point, which has a direct impact on the stability of the common rail system.

By maintaining the factory geometry and internal diameter, the pipe enables the sensor to react correctly to pressure changes, supporting even fuel dosing, proper engine performance, and reducing the risk of engine control unit errors.

Construction and fitment for Mercedes W204 / W212

The pipe belongs to the group of technical components referred to as Lines, hoses, and pipes, designed specifically for the requirements of high-pressure systems in diesel engines. The construction is adapted to the loads typical for common rail systems, with an emphasis on resistance to pressure, temperature, and vibrations generated by the OM651 unit.

The factory-formed shape of the pipe facilitates its routing in the engine bay, minimizing stress and the risk of abrasion. Properly selected mounting ends allow for secure seating at the sensor and the fuel rail/section, which facilitates trouble-free installation in Mercedes W204 and W212 vehicles.

Benefits of using an original component

Using an original fuel pressure sensor pipe in a diesel engine offers a number of practical benefits:

• maintaining fuel system operating parameters in accordance with the vehicle manufacturer's specifications,
• stable fuel pressure readings by the sensor, which supports correct injection control,
• reducing the risk of leaks and pressure drops in the critical section of the installation,
• better compatibility with the factory engine control unit compared to generic aftermarket replacements.

For workshops and users, this means a more predictable diagnostic process and a lower risk of service returns due to fuel pressure issues.

Characteristics of the used component

The offered pipe is a used part, sourced from dismantling, which allows for economical repair while maintaining the original manufacturer's specifications. Such components are frequently chosen by workshops specializing in the Mercedes brand when a combination of technical compliance and reasonable fuel system maintenance costs is required.

If you are planning a more extensive fuel system repair or replacing several components at once, it is worth considering selecting other components from the Lines, hoses, and pipes group to maintain the consistency of the entire fuel installation.

Application in OM651 diesel engines

OM651 engines are modern diesel units where precise fuel pressure control is crucial for performance, fuel consumption, and exhaust emissions. The fuel pressure sensor pipe works with the common rail system, ensuring appropriate conditions for the sensor and engine controller to operate.

Selecting the correct pipe dedicated to the diesel engine helps limit typical problems such as starting difficulties, power drops, or the appearance of errors related to fuel pressure. This is a practical solution for both individual users and professional services maintaining fleets of Mercedes vehicles.

Support with selection and repair optimization

If you are planning comprehensive fuel system maintenance or need other elements from the same group, check the available products in the Lines, hoses, and pipes category to select components matched to the specific configuration of your Mercedes.

It is also worth reading the practical tips on using OEM used parts in service, available in the article how the availability of used OEM parts affects repair time and service costs. This will make it easier for you to plan the repair in a way that reduces vehicle downtime and optimizes your service budget.