Vent Tube Mercedes W203 Petrol M272 Fuel Breather Purge Valve Engine Line

Mercedes W203 Gasoline M272 Fuel Evaporation Pipe is an original fuel system component from the Hoses, pipes and tubes group, designed for M272 gasoline engines. It ensures proper fuel vapor discharge, supporting stable engine operation and correct interaction with the engine control system. Thanks to its factory geometry and connectors, it is a solution that is convenient to install and technically matched to the Mercedes W203 construction.

Specifications and technical data

• SKU: A2034711915
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2034711915
• Substitutable numbers: A2034711915, A 203 471 19 15
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and Function in the Fuel System

The fuel evaporation pipe in the M272 gasoline engine is responsible for the controlled discharge of vapors from the fuel system to other installation components. A properly functioning pipe:

• stabilizes fuel system pressure under various engine loads,
• limits uncontrolled vapor escape,
• supports uniform fuel supply to the engine,
• ensures correct interaction with sensors and the engine control unit.

For gasoline engines, using the appropriate evaporation pipe is important for both running smoothness and maintaining operational parameters over a longer period.

Construction and Fit for Mercedes W203

This component belongs to the Hoses, pipes and tubes group, meaning its construction is optimized for routing within the engine bay and resistance to temperature and fuel contact. The shape, diameters, and connector types are factory-matched to the M272 engine architecture in the W203 model, facilitating installation and minimizing the risk of leaks.

Original manufacturing ensures:

• a routing path in the engine bay consistent with the design,
• appropriate rigidity and flexibility in areas prone to vibration,
• compatibility with factory brackets and mountings.

Characteristics of a Used Component

The fuel evaporation pipe is offered as a used part, allowing for economical repair of the fuel system while maintaining the original manufacturer's specifications. This type of component, when properly maintained, retains its properties for a long time, making it a rational alternative to a new replacement in many cases.

Before installation, a standard check of seals and connector condition is recommended to ensure proper interaction with other fuel system components and to avoid undesirable pressure drops or fuel odors around the vehicle.

Benefits of Using an Original Fuel Evaporation Pipe

Using an original fuel evaporation pipe in a Mercedes W203 with an M272 gasoline engine offers a number of practical benefits:

• Factory Fit – no modifications required, correct routing in the engine bay, and compatibility with standard brackets.
• Stable Fuel System Operation – reduced risk of leaks that can affect starting, idling, and throttle response.
• Consistency with Other OEM Components – maintaining the vehicle manufacturer's original design concept.

For workshops and users who prioritize technical correctness in repairs, choosing an original fuel evaporation pipe is a safe and predictable solution in terms of operation.

Installation and Operational Tips

When replacing the fuel evaporation pipe, pay attention to:

• cleanliness of the spigots and connection sockets,
• proper seating of connectors and clips,
• absence of excessive stress after installation in its final position,
• inspection of other hoses within the fuel system.

After installation, a brief observation of engine operation and potential computer diagnostics are recommended to confirm the absence of fuel system and fuel evaporation-related errors.

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

For a better understanding of the relationships between the fuel system, air conditioning, and heating, as well as the principles of selecting used OEM components, the guide article Air Conditioning and Heating – Part Selection and Maintenance for Year-Round Comfort may be helpful, discussing practical service procedures and application examples.