Mercedes W212 M270 Fuel Injection Pressure Rail Injector Nozzle A2780703495

Mercedes W212 M270 Gasoline Fuel Rail with Injectors is a complete fuel rail assembly with gasoline injectors, designed for M270 family engines in Mercedes E-Class W212 models. This component belongs to the injector nozzles category and is a precise part of the fuel supply system, crucial for the stable operation of a gasoline engine.

Specifications and technical data

• SKU: A2780703395
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2780703395
• Substitutable numbers: A2780703395, A 278 070 33 95
• Fuel type: Petrol
• Category: Fuel Injectors

Purpose and Function in the Fuel System

The fuel rail integrated with injectors in the M270 engine is responsible for the precise dosing of gasoline to each cylinder, according to the engine control unit's map. A correctly selected component from this group ensures:

• stable engine operation across the entire RPM range,
• proper fuel spray pattern from the injector nozzles,
• maintenance of the correct mixture composition during startup, city driving, and highway driving.

For modern Mercedes gasoline engines like the M270, a functional injection system directly impacts the smoothness of operation, dynamics, and fuel consumption.

Technical Characteristics of the Fuel Rail

The presented fuel rail belongs to the injector nozzles category, meaning it includes components responsible for the precise atomization of gasoline in the combustion chamber. The rail's design is adapted to the specific requirements of the M270 engine, including:

• cylinder head geometry and intake port layout,
• fuel system operating pressure in the gasoline engine,
• injector timing characteristics specified by the Mercedes control unit.

This allows the rail to work seamlessly with the vehicle's factory electronics, maintaining the performance parameters intended by the manufacturer.

Benefits of Using an Original Fuel Rail

Using an original fuel rail with injectors in a Mercedes W212 with an M270 gasoline engine allows for the preservation of the powertrain's factory characteristics. Key benefits include:

• compatibility with the M270 unit – mechanical and hydraulic fit for the specific engine type,
• consistent operation of all injectors – uniform fuel delivery to individual cylinders,
• reduced risk of control unit errors related to incorrect pressure or injection timing,
• maintaining predictable vehicle behavior during acceleration, engine braking, and constant speed driving.

This solution is particularly recommended for issues such as rough idling, power loss, or increased fuel consumption in Mercedes gasoline engines.

Component Condition and Service Application

The fuel rail with injectors is offered as a used part, allowing for an economical repair of the fuel system while maintaining the original manufacturer's specifications. This type of component is often chosen in situations where:

• a replacement of the entire set of injectors is necessary for the gasoline engine,
• mechanical damage to the rail or injector seats has occurred,
• repairing individual injectors is not cost-effective compared to replacing the entire assembly.

Before installation, standard service procedures are recommended: checking the fuel system for leaks, verifying operating parameters on a diagnostic tester, and performing adaptation if required by the control unit software.

Technical Support and Additional Materials

If you are looking for other Mercedes injector nozzles suitable for different models of this brand, check out our dedicated category: Mercedes injector nozzles. There you will find a wide selection of fuel injection system components for various engine units.

Although the described component is for a gasoline engine, when diagnosing fuel injection system problems, it is useful to understand common symptoms and diagnostic procedures. The expert article Diesel injector faults – how to recognize them and the consequences of neglecting them may be helpful. It discusses symptoms of injector wear, the importance of proper diagnostics, and the consequences of driving with a faulty injection system – many of the principles described also apply when working with gasoline engines.