Mercedes W204 Diesel OM651 Fuel Line Hose Pipe A6510706381 is an original diesel fuel supply system component, designed for installation in the front section of Mercedes vehicles with an OM651 engine. The carefully designed geometry of the pipe ensures stable fuel delivery and supports the correct operation of the injection system in diesel units.
Specifications and technical data
- SKU: A6510706381-2
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6510706381
- Substitutable numbers: A6510706381, A 651 070 63 81
- Location on the vehicle: Front
- Fuel type: Diesel
- Category: Fuel Injectors
Purpose and Role in the Injection System
The fuel line, part of the injector nozzles category, is responsible for precisely delivering diesel fuel to the injection components in the OM651 engine. Its placement in the front of the vehicle facilitates a compact installation route and reduces the risk of unwanted vibrations and leaks.
In Mercedes diesel engines, a correctly selected fuel line is crucial for:
- maintaining stable fuel pressure within the injection system,
- limiting performance drops under dynamic engine load,
- ensuring uniform injector operation and proper diesel engine running characteristics.
Benefits of Using an Original Mercedes Fuel Line
Using a line dedicated to the OM651 unit in the W204 body allows for the preservation of the fuel supply system's original operating parameters. The component has been designed for:
- precise fit to the engine bay geometry – correct routing of the line minimizes stress and the risk of abrasion,
- compatibility with the diesel injection system – conformity with the operating characteristics of injector nozzles is maintained,
- stable fuel flow – the appropriate diameter and shape of the line support uniform engine supply.
As a result, the fuel line helps maintain predictable engine behavior, which translates to consistent performance and proper response to load.
Technical Characteristics for Installation
The line has been developed for use in a diesel fuel supply system, meaning it is adapted to typical diesel engine parameters – both in terms of pressure and resistance to fuel and thermal conditions in the engine bay.
- Front vehicle placement facilitates service access and inspection of the line's condition during maintenance.
- Factory geometry reduces the need for installation modifications and promotes installation in accordance with manufacturer guidelines.
- Operation in a diesel system ensures compatibility with the fuel flow characteristics of OM651 engines.
An element configured in this way is the correct choice when replacing a damaged or leaking section of the fuel system in a Mercedes W204 with a diesel engine.
Condition and Application in Vehicle Service
The offered fuel line is a used part, making it an attractive solution for optimizing repair costs, especially in intensively used vehicles. In workshop practice, such a component serves as:
- a replacement for a damaged line in the diesel fuel supply system,
- a component restoring the fuel system's seal in the front of the vehicle,
- a part supporting the correct operation of injector nozzles in the OM651 engine.
Selecting a line compatible with the engine unit and W204 body helps reduce the risk of starting problems, power loss, or uneven engine operation resulting from improper fuel supply.
Related Mercedes Injector Nozzles and Technical Knowledge
If you are looking for other Mercedes injector nozzles compatible with your model, check out our dedicated category: Mercedes injector nozzles. There you will find a wide selection of injection system components for various diesel engines of this brand.
To better understand the impact of the fuel supply system's condition on diesel engine operation, it is worth reading the guide describing the symptoms and consequences of faulty injector operation: Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails. This is a practical addition to your knowledge when diagnosing fuel supply problems in diesel engines.
