Fuel Rail Mercedes W204 C207 W212 W906 OM651 High Pressure Injection A6510700495

Mercedes W204 C207 W212 W906 OM651 Fuel Rail A6510700495 is a precision common rail fuel supply rail designed for OM651 diesel engines in select Mercedes models. This component belongs to the injector nozzles category and is a key part ensuring stable fuel pressure in modern diesel engines.

Specifications and technical data

• SKU: A6510700495-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510700495
• Substitutable numbers: A6510700495, A 651 070 04 95, A0009052701, A 000 905 27 01
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and Role in the Injection System

In a diesel engine, the fuel rail acts as a common fuel manifold that distributes diesel fuel to individual injectors under sufficiently high and stable pressure. In OM651 units, the use of a dedicated fuel rail allows for:

• maintaining stable fuel pressure across the entire engine load range,
• precise dosing of diesel fuel to each cylinder,
• reducing pressure fluctuations in the common rail system, which contributes to smoother engine operation.

The selection of the correct fuel rail directly impacts engine performance, exhaust emissions, and injector durability.

Compatibility with OM651 Engine and Mercedes Vehicles

The presented fuel rail is designed to work with the OM651 diesel engine used in popular Mercedes C-Class and E-Class models, as well as commercial vehicles from this brand. Using the appropriate component in the diesel injection system helps maintain:

• correct operating characteristics of the OM651 unit in terms of power and torque,
• consistency with the factory engine control unit calibration,
• seamless integration with existing injectors and fuel system components.

Properly matching the fuel rail to a specific engine variant and body type is crucial to avoid starting issues, power loss, or rough idling.

Technical Characteristics of the Fuel Rail

The fuel rail offered here is compatible with diesel fuel supply systems, meaning it is designed to operate at the high working pressures typical of common rail systems. The design includes:

• precise fuel flow channels that minimize pressure drops,
• housing for sensors and connections required by the engine control unit,
• appropriate mounting geometry allowing for installation in the OM651 engine bay without modifications.

A fuel rail configured in this way is an important link between the high-pressure pump and the injectors, influencing the engine's responsiveness to accelerator pedal input.

Condition, Service Application, and Cost-Effectiveness

The offered fuel rail is a used part, making it an attractive solution for fuel system repairs in vehicles used intensively or with higher mileage. In many cases, this can significantly reduce service costs while maintaining an adequate level of functionality. This type of component is particularly useful when:

• the existing fuel rail has suffered mechanical damage or internal corrosion,
• there are problems with fuel pressure in the common rail manifold,
• a comprehensive overhaul of the injection system, including injectors and pump, is necessary.

Before installation, standard fuel system diagnostics and leak testing are recommended to ensure the proper operation of the entire system.

Technical Support and Educational Materials

When working with common rail systems, it is beneficial to be aware of the typical symptoms of wear and failure in components such as fuel rails or injectors. Detailed information on the symptoms and consequences of neglect can be found in the article: Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails. This is a practical source of knowledge for mechanics and owners of diesel-powered vehicles.

If you are considering the choice between new and used parts for fuel system repairs, the guide: Car Parts – New or Used? Comparing Costs, Quality, and Durability, which discusses the economic and operational aspects of both solutions, may also be helpful.

If you need other Mercedes injector nozzles for your vehicle, check out our dedicated offer: Mercedes injector nozzles. This will help you easily select compatible injection system components for your specific model and engine version.