Mercedes W205 M274 M264 Petrol Vacuum Pipe Hose Line Intake Manifold A2054301029

Mercedes W205 M274 M264 Vacuum Hose Gasoline is an original part from the Hoses, Tubes, and Pipes group, designed for gasoline engine fuel systems in Mercedes W205 models with M274 and M264 units. A used hose ensures factory-set vacuum routing geometry, which promotes stable operation of engine accessories and facilitates precise, service-oriented replacement of the component.

Specifications and technical data

• SKU: A2054301029
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054301029
• Substitutable numbers: A2054301029, A 205 430 10 29
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and Technical Function

The vacuum hose in M274 and M264 gasoline engines is responsible for the controlled transfer of vacuum between control system components and accessories. In practice, this affects the proper functioning of sub-assemblies such as vacuum actuators, control valves, or selected intake system modules.

By maintaining the original shape and internal diameter, the hose allows for proper flow parameters, which limits pressure drops and helps avoid unstable engine operation, power loss, or error codes stored in the ECU.

Benefits of Using an Original Vacuum Hose

Using an original hose to replace a worn or leaking component brings tangible operational benefits:

• maintaining the factory routing of the hose in the engine bay,
• proper fit to vacuum system spigots and connectors,
• reducing the risk of micro-leaks typical of aftermarket parts with imprecise dimensions,
• more stable engine operation across the full load range.

For the user, this means more predictable vehicle behavior, easier diagnostics, and the ability to maintain consistency with other system components, which is particularly important in modern gasoline engines with complex control systems.

Product Characteristics and Fitment

The hose comes from the Mercedes brand, guaranteeing compliance with the factory specifications for M274 and M264 units in the W205 body. The component is designed for gasoline fuel systems, meaning its construction and materials are adapted to the operating conditions typical for such engines (temperature, vibrations, presence of fuel vapors).

As a used part, the hose is a sensible choice when preserving original geometry and connectors is a priority, while optimizing repair costs. It is a practical solution for both workshops specializing in the Mercedes brand and for discerning owners who maintain their vehicle's technical condition themselves.

Practical Application in Service

Replacement of the vacuum hose is recommended in case of detected leaks, cracks, deformations, or problems with the operation of vacuum-controlled accessories. In M274 and M264 engines, symptoms may include, among others, unstable idle speed, reduced dynamics, occasional limp mode activation, or intake system-related error codes.

Selecting a hose dedicated to a specific W205 configuration reduces installation time, minimizes the need for modifications, and maintains clear routing of the system in the engine bay, which facilitates subsequent inspections and diagnostics.

If you are planning a comprehensive repair or upgrade of the vacuum system area in your Mercedes and need other parts from the same group, such as flexible hoses, rigid pipes, or connecting sections for the intake system, check the available parts in the Mercedes Hoses, Tubes, and Pipes category.

For those interested in the broader context of selecting used OEM parts for modern gasoline engines, including their impact on engine and accessory performance characteristics, the guide article Go-Kart Feeling XXL: Used N18 Turbocharger vs. B48 – What to Choose for a Mini Cooper S?, which discusses the practical aspects of installing and operating used components in turbocharged engines, may be helpful.