Mercedes W204 W213 M274 Fuel Line Hose High Pressure Pump Pipe A2740703332

Mercedes W204 W213 M274 Fuel Line Hose High Pressure Pump Pipe is an original fuel supply system component, designed for precise cooperation with the M274 series engine unit. Thanks to its factory geometry and perfect fit for the Mercedes fuel system, this component ensures stable fuel flow and proper valve operation under demanding operating conditions. It is a solution for users who expect consistency with factory specifications and predictable fuel system behavior.

Specifications and technical data

• SKU: A2740703332-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2740703332
• Substitutable numbers: A2740703332, A 274 070 33 32
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The described pipe-hose integrated with the fuel valve is responsible for the controlled transport of fuel between the supply system components and for proper flow control under specific engine operating conditions. The design, matched to the architecture of the M274 unit in Mercedes W204 and W213 models, allows for maintaining:

• stable pressure in the working section of the fuel system,
• proper venting and fuel return (in accordance with the factory design),
• consistency with the original routing of lines in the engine compartment.

As a result, the supply system maintains predictable operating parameters, which promotes smooth engine operation and reduces the risk of disturbances associated with improper fuel flow.

Construction, fitment, and installation

The pipe-hose with the fuel valve has been designed as a system element that works with factory quick-connectors, brackets, and guides in the engine compartment. The properly shaped path of the line facilitates its routing along the original path, minimizing stress and the risk of rubbing against adjacent components.

In practice, the installation involves:

• removing the old line while maintaining the cleanliness of the fuel system,
• seating the new component in the factory mounting points,
• checking for leaks after the first engine start.

This approach allows for maintaining factory line routing and reducing the time required for replacement, which is important both in independent service centers and in workshops specializing in the Mercedes brand.

Benefits of using an original fuel line

Using an original element from the Lines, hoses, and pipes group in a Mercedes fuel system brings a number of practical benefits:

• maintaining compliance with factory fuel flow characteristics,
• reducing the risk of leaks resulting from the poor fit of aftermarket replacements,
• easier diagnostics – system operating parameters correspond to the values provided by the manufacturer,
• consistency with service documentation and repair procedures used in authorized service centers.

A used OEM element is a reasonable compromise between cost and maintaining high manufacturing quality, especially in the case of components that must work with precise electronics controlling the fuel system.

Condition, verification, and selection by part numbers

The offered fuel line with valve comes from dismantling and is classified as a used original component. Before being put up for sale, elements of this type are standardly verified for leaks, the condition of connectors, and the integrity of the valve body, which helps to reduce the risk of malfunctions after installation.

For the correct selection of parts, it is recommended to compare identification data with the vehicle documentation or the numbers found on the currently installed element. In case of doubt, it is worth using the help of a mechanic or technical advisor who will verify compatibility based on catalog numbers and engine specifications.

If you are interested in a broader context of using aftermarket elements in key vehicle systems, practical information on selection by VIN and OEM can be found in the article: Why it is worth buying used gearboxes and engines – facts instead of myths.

Expanding the supply system within the same part group

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

Thanks to this, you can replace several related components in one service stage, which reduces the risk of subsequent leaks and makes it easier to maintain the consistency of the entire fuel system in your car.