Mercedes W211 Diesel OM47 Fuel Rail Hoses Injector A6510706381 is a component of the fuel supply system in diesel engines, responsible for the stable delivery of diesel fuel to the injector rail. The product comes from a Mercedes vehicle and is designed for installation in the front part of the engine compartment, in a diesel fuel supply system.
Specifications and technical data
- SKU: A6120700195
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6120700195
- Substitutable numbers: A6120700195, A 612 070 01 95
- Location on the vehicle: Front
- Fuel type: Diesel
- Category: Fuel Injectors
Purpose and Role in the Injection System
The offered injector rail hoses for Mercedes W211 with a diesel engine operate in a critical area of the fuel supply system, responsible for the precise delivery of fuel to the rail and then to the injectors. A correctly selected set of hoses is crucial for:
- maintaining stable fuel pressure throughout the common rail system,
- uniform supply to all cylinders, without performance drops,
- reducing the risk of leaks and diesel fuel spills in the engine compartment.
Their location in the front of the vehicle facilitates easier diagnostics and servicing, but also exposes the hoses to variable temperatures and vibrations, so their condition directly impacts the engine's running smoothness.
Construction and Performance Parameters
The injector rail hoses in this Mercedes model are designed for operation in a diesel engine system, which involves high pressures and significant thermal loads. The construction of the hoses ensures:
- adequate rigidity and resistance to pressure pulsations, typical of injector operation,
- precise fuel delivery from the high-pressure pump to the injector rail,
- compatibility with the factory mounting system in the Mercedes W211 engine compartment.
As an element within the broader injection system, categorized under injector nozzles, these hoses work directly with the rail and injectors, influencing their durability and proper functioning.
Condition, Selection, and Practical Application
The offered set is a used part from a dismantled vehicle and is intended for users seeking a solution compliant with Mercedes factory specifications. Replacing the injector rail hoses is particularly recommended when symptoms such as:
- uneven engine idle,
- loss of power or jerking during acceleration,
- signs of sweating or fuel leaks around the injector rail.
When selecting this part, it is advisable to pay attention to compatibility with the specific engine version and injection system of your W211 model to ensure full functionality and correct hose routing in the engine compartment.
Benefits of Using an Original Mercedes Part
Using injector rail hoses from a Mercedes allows for the preservation of factory fuel routing and proper installation layout in the front of the vehicle. The main advantages of this solution include:
- consistency with the original injection system geometry – no need for modifications or fitting aftermarket alternatives,
- maintaining predictable diesel engine behavior under load,
- reducing the risk of leaks resulting from incorrect hose length or shape selection.
For users performing comprehensive injection system servicing, injector rail hoses are a natural complement to replacing injectors, pumps, or the rail itself, helping to restore the correct operating parameters of the entire system.
Diagnostics and Technical Knowledge – Repair Support
When facing issues with the injection system, it is advisable to rely on reliable technical knowledge. A detailed discussion of typical symptoms and the consequences of neglect can be found in the article “Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails”, which helps to better understand the relationships between the condition of hoses, the rail, and the injectors themselves.
If you are also looking for other Mercedes injector nozzles for your car, check the available products in the Mercedes injector nozzles category to select components compatible with your vehicle's fuel system.
