Mercedes W169 W245 Fuel Injection Rail Distributor Diesel A6400701295

Mercedes W169 W245 Fuel Injection Rail Distributor Diesel is a precision component of the fuel supply system, responsible for the even distribution of diesel fuel to the injectors. As part of the Lines, hoses and pipes group, it works in conjunction with the high-pressure pump and injectors, stabilizing fuel pressure in diesel engines. Using this original component allows you to maintain the factory operating parameters of the engine at a reasonable repair cost.

Specifications and technical data

• SKU: A6400701295
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6400701295
• Substitutable numbers: A6400701295, A 640 070 12 95
• Fuel type: Diesel
• Part type: Fitting
• Category: Hoses, Lines & Pipes

Function and role in the diesel fuel system

The fuel injection rail distributor in a Diesel engine plays a key role in stabilizing and distributing fuel under high pressure. It is responsible for:

• maintaining the correct operating pressure throughout the injection rail,
• even fuel supply to all cylinders,
• cooperation with sensors and equipment controlling fuel dosage,
• limiting pressure fluctuations during sudden changes in engine load.

As a result, the engine runs stably, and the throttle response remains predictable and repeatable, which translates into smooth operation and operational safety.

Designed for Mercedes W169 and W245

The offered distributor is dedicated to Mercedes models from the W169 and W245 series with diesel engines. Using an original component from the same design group ensures:

• proper fitment to the existing injection rail and engine equipment,
• compatibility with the factory electronic engine control system,
• preservation of the injection system parameters designed by the manufacturer.

This solution is particularly recommended for fuel system repairs where consistency with the vehicle's original configuration is required.

Characteristics of the used component

The component comes from disassembly and is offered as a used part, which allows for a significant reduction in service costs while maintaining the original technical specification. In practice, this means:

• the possibility of an economical repair of the injection system without giving up parts from the vehicle manufacturer,
• easier matching to existing lines, hoses, and pipes in the engine bay,
• reduced risk of compatibility issues compared to aftermarket replacements of unknown origin.

Before installation, it is recommended to perform a standard system leak test and verify the correct operation of the injection on a diagnostic stand to fully utilize the potential of this element.

Benefits of using an original distributor

Using a fuel injection rail distributor that complies with the factory specification brings a number of practical benefits:

• stable diesel engine operation across the entire rev range,
• correct fuel dosing, which helps keep consumption at the intended level,
• reduced risk of uneven operation, jerking, or starting problems on both hot and cold engines,
• better cooperation with other elements from the Lines, hoses and pipes group in the engine bay.

For workshops and individual users, this means a more predictable repair process and a lower risk of needing to intervene in the fuel system again.

System expansion and related elements

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as supply lines, flexible fuel hoses, or rigid high-pressure pipes, check out the available parts in the Mercedes Lines, hoses and pipes category.

When working with critical safety systems – such as brakes or control elements – it is worth applying a similar approach as with the fuel system, using reliable sources and proven procedures. Practical tips on the safe selection of used components can be found in the article Second-hand brake system: how to safely choose discs, calipers, and ABS?, which shows what to look for when buying key components in a used parts store.