Injection Rail Mercedes W202 W210 R170 Petrol M111 Injection Pipe R1110781045

Injection Rail Mercedes W202 W210 R170 Petrol M111 Injection Pipe is an original fuel system component designed for petrol-powered engines. Engineered by the vehicle manufacturer, the rail ensures stable fuel delivery to the injectors, which translates into predictable engine performance and correct combustion characteristics. This solution is dedicated to users who expect compatibility with the factory installation and the maintenance of the engine's original operating parameters.

Specifications and technical data

• SKU: A1110702195
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: R1110781045
• Substitutable numbers: R1110781045, R 111 078 10 45
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The fuel rail in a petrol engine plays a key role in distributing fuel to individual cylinders. In the case of M111 units used in Mercedes W202, W210, and R170 models, this component is responsible for the even supply of petrol to the injectors, which has a direct impact on engine refinement, dynamics, and fuel consumption. Using an original rail allows for the preservation of factory flow and pressure parameters within the fuel system, minimizing the risk of starting issues, rough idling, or power loss.

Construction and fitment for the petrol engine

The fuel rail has been constructed to work with the petrol supply system in M111 engines, maintaining the geometry and mounting points specified by the manufacturer. This allows for precise fitment to the cylinder head and other auxiliary components without the need for system modifications. The design of the rail enables stable fuel delivery and correct positioning of the injectors relative to the intake ports, which supports repeatable fuel dosing across the full load range.

Benefits of using an original fuel rail

Using a fuel rail dedicated to specific Mercedes engines provides a number of practical operational benefits:

• maintenance of the factory engine performance characteristics in terms of power and torque,
• reduction of the risk of leaks within the fuel system,
• proper cooperation with standard petrol injectors,
• easier diagnostics of potential faults due to compliance with factory specifications,
• possibility of direct installation in place of a worn-out component.

For users who want to restore the correct operating parameters of the engine after a failure or wear of fuel system components, using an original fuel rail is a technically sound solution that helps reduce vehicle downtime.

Condition, origin, and service application

The offered fuel rail is a component from the Lines, hoses, and pipes category, sourced from dismantling. This type of part is suitable both for the standard replacement of a worn element and for more extensive service work within the petrol engine's fuel system. Replacing the rail is particularly recommended in situations where symptoms such as a noticeable smell of fuel in the engine bay, signs of leaks, or problems with the engine's smooth operation occur.

Support with selection and technical knowledge expansion

Before purchasing, it is worth verifying the compatibility of the rail with the specific engine version and vehicle year using the vehicle's identification data and the manufacturer's technical information. When comparing solutions used in different engines and analyzing operating costs, the comparative material regarding BMW diesel engines may be helpful – ranking of legendary BMW diesels N47 vs M57 / M57N / M57N2, which shows how important the selection of appropriate components is in the context of durability and economy of use.

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 fuel lines, flexible hoses, or rigid supply pipes, check the available parts in the Mercedes lines, hoses, and pipes category.