Mercedes W177 M260 Petrol Fuel Injector Rail Line A2600700300

Mercedes W177 M260 Fuel Rail A2600700300 is an original gasoline fuel system component, designed for M260 series engines in the W177 model. This rail belongs to the injector nozzles category and is a key component for precise fuel delivery in Mercedes gasoline engines.

Specifications and technical data

• SKU: A2600700900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2600700900
• Substitutable numbers: A2600700900, A 260 070 09 00, A2600700300, A 260 070 03 00
• Fuel type: Petrol
• Category: Fuel Injectors

Purpose and Role in the Fuel System

The fuel rail in a gasoline engine is responsible for evenly distributing fuel to individual injectors, maintaining stable pressure, and ensuring consistent operating conditions for each cylinder. In M260 units, the use of a properly selected fuel rail translates to:

• stable engine operation across the full range of loads and speeds,
• precise gasoline metering according to the engine control unit maps,
• minimizing fuel pressure drops during dynamic acceleration,
• maintaining the correct mixture during cold starts and under load.

Selecting a fuel rail dedicated to a specific generation of the M260 engine allows for the preservation of factory parameters, which is important for both performance and the durability of the powertrain.

Construction of the Gasoline Engine Fuel Rail

The fuel rail in this configuration is designed to work with a gasoline fuel system. This means it is adapted to the operating pressure characteristics, injector types, and the M260 engine head architecture.

Key structural features of this type of fuel rail include:

• fuel channels with optimized cross-section ensuring even distribution of gasoline to all injectors,
• mounting points matched to the M260 head, facilitating installation and ensuring correct positioning relative to the injectors,
• designed for high-pressure systems used in modern gasoline direct injection engines.

This type of structural solution helps maintain the rail's rigidity, reduce vibrations, and ensure consistent injector operating conditions, which directly impacts the smoothness of the powertrain's operation.

Benefits of Using an Original Mercedes Fuel Rail

Using a fuel rail dedicated to the W177 with an M260 engine offers a number of practical service and operational benefits:

• factory fit for the injection system – no need for modifications to the fuel lines or mounting points,
• maintaining engine operating parameters consistent with manufacturer specifications, including stable idle speed and correct throttle response,
• reducing the risk of leaks at fuel connection points due to proper geometry and fit with injectors,
• easier fuel system diagnostics – a component compliant with factory specifications simplifies the interpretation of data from diagnostic testers.

When upgrading or repairing the gasoline fuel system in a W177, using a fuel rail consistent with the M260 design is crucial for maintaining correct exhaust emissions and proper interaction with the engine control system.

Component Condition and Service Application

The offered fuel rail comes from the injector nozzles group and is intended for reinstallation in Mercedes vehicles with the M260 engine. This type of component is particularly useful in situations where the existing element shows signs of wear, leaks, or mechanical damage, such as body deformation or problems with maintaining fuel pressure.

Replacement of the fuel rail is recommended, among other things, for:

• recurring starting problems with a warm or cold engine,
• uneven engine operation combined with injector system errors logged in the control unit,
• confirmed leaks in the fuel distribution to the injectors.

Mercedes Injector Nozzles – Selection and Additional Information

If you are looking for other components from the Mercedes injector nozzles category tailored to your model, check out our dedicated offer: Mercedes injector nozzles. There you will find a wide selection of injection system components for various engines of this brand.

When diagnosing fuel system problems, it is also worth familiarizing yourself with educational materials on injectors. Although the case described there concerns diesel engines, many principles of diagnostics and symptoms of incorrect injector operation are similar – especially in the context of engine performance analysis and control unit error interpretation. More information can be found in the article: diesel injector faults – symptoms, consequences, and diagnostics.

When selecting a fuel rail for a specific engine and body version, it may also be helpful to compare data by catalog numbers and manufacturer designations. A guide on how to safely verify part compatibility by OEM numbers and avoid mistakes in online purchases is described in the guide: risk-free online parts shopping – verifying components by OEM numbers.