Fuel Feed Lines Mercedes W204 OM651 Injector Tank Fuel Pipes Diesel A6510706381

Mercedes W204 W212 OM651 Fuel Lines are a set of lines supplying the injection system in OM651 diesel engines, fitted in the W204 C-Class and W212 E-Class models. This component is designed for the front of the vehicle, in direct proximity to the engine, ensuring stable diesel fuel delivery to the injector nozzles.

Specifications and technical data

• SKU: A6510706381
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510706381
• Substitutable numbers: A6510706381, A 651 070 63 81, BG
• Location on the vehicle: Front
• Fuel type: Diesel
• Category: A/C Hoses & Fittings

Application and Function in the Injection System

The offered fuel lines for OM651 engine work with the diesel injection system, responsible for precise fuel delivery to the injector nozzles. A correctly selected set of lines is crucial for:

• maintaining stable fuel pressure in the rail and at the injectors,
• limiting performance drops of the engine under load,
• reducing the risk of leaks at critical points of the fuel supply system.

Their location at the front of the vehicle facilitates easier diagnostics and servicing, while also requiring a component resistant to temperature, vibrations, and the typical operational stresses of a diesel engine.

Compatibility with OM651 Engine and Mercedes Vehicles

The Mercedes W204 W212 OM651 Fuel Lines are designed to work with the OM651 diesel engine. This solution is dedicated to popular Mercedes C-Class and E-Class models, where the injection system operates under high pressure and requires appropriately selected supply lines.

Thanks to the use of original geometry and proper routing of the lines, the following are maintained:

• correct fuel flow path from the front of the vehicle to the injectors,
• compliance with factory mounting points and brackets in the engine bay,
• stable operation of the injection system under typical driving conditions.

Technical and Operational Characteristics

Fuel lines in a diesel system are exposed to high operating pressures, temperature changes, and engine vibrations. Using a component from the injector nozzles category with the appropriate specifications helps to mitigate common issues such as micro-leaks, air ingress, or pressure drops in the supply.

Replacing fuel lines is particularly recommended when symptoms such as:

• difficult engine starts (warm or cold),
• uneven engine operation at idle,
• noticeable fuel odor around the engine bay,
• traces of diesel fuel leaks on ancillary components.

Selecting the correct set of lines for a specific OM651 engine allows for the restoration of proper fuel system operation and reduces the risk of injector nozzle damage.

Condition, Origin, and Benefits of Choosing a Used Part

The offered set of fuel lines is a used part, sourced from a dismantled Mercedes vehicle. Choosing a used OEM component is often a beneficial solution for users who expect:

• factory fit for the injection system without the need for modifications,
• preservation of the original performance characteristics of the diesel engine,
• an optimal cost-to-quality ratio compared to aftermarket alternatives of unknown origin.

Prior to installation, a standard check of seals and connector condition is recommended to ensure trouble-free operation throughout the vehicle's remaining service life.

Diagnostics and Prevention for the Injection System

In case of problems with the diesel fuel supply system, it is advisable to simultaneously assess the condition of the fuel lines and the injectors themselves. Detailed information on 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. This will help you better plan your service work and avoid costly repairs in the future.

Related Products from the Same Category

If you also need other components from the Mercedes injector nozzles category for your vehicle, check out the Mercedes injector nozzles available in our store to complete the entire fuel system in accordance with the manufacturer's original specifications.