Mercedes W211 Air Intake Hose Pipe M112 Petrol Engine A1121400118

Mercedes W211 M112 Gasoline Air Hose is a part from the Hoses, Tubes, and Pipes category, designed for the intake system of the M112 gasoline engine in the W211 model. It ensures stable air delivery to the engine unit, guaranteeing proper engine operation and maintaining factory flow parameters.

Specifications and technical data

• SKU: A1121400118
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1121400118
• Substitutable numbers: A1121400118, A 112 140 01 18, A1121400218, A 112 140 02 18, BG
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and Function in the Intake System

The air hose in the M112 gasoline engine is responsible for the sealed and controlled delivery of air to the intake manifold. The correct shape and diameter of the hose allow for proper flow, which translates to stable engine operation, accurate throttle response, and predictable fuel consumption. Using a component that is structurally identical to the factory design is particularly important in gasoline engines, where the quality of the fuel-air mixture directly impacts the smoothness of operation and the durability of components.

Benefits of Using an Original Air Hose

Using an air hose dedicated to the M112 unit in the Mercedes W211 allows for the integrity of the entire intake system to be maintained. Proper fitting to spigots, brackets, and accessories minimizes the risk of leaks, vibrations, and unwanted stress. In practice, this means:

• stable airflow to the gasoline engine,
• reduced risk of air leaks and control unit errors,
• easier intake system diagnostics,
• no need for modifications or fitting universal parts.

A part from this group, correctly selected for the specific model and fuel type, helps maintain engine operating parameters close to factory levels, which is especially important for vehicles used daily.

Component Characteristics and Condition

The offered air hose comes from a Mercedes vehicle and is a used part, allowing for a favorable cost-to-functionality ratio. This type of part, when correctly chosen, can be an effective solution for intake system repairs, especially when the existing hose shows cracks, signs of aging, or leaks. The product is assigned to the Hoses, Tubes, and Pipes category, which facilitates its identification among other system components.

Compatibility by Numbers and Parameters

The air hose for the Mercedes W211 with the M112 gasoline engine has an assigned OEM part number and related interchangeable numbers, allowing for precise verification of compatibility with a specific vehicle version. In practice, this means the possibility of checking compatibility by both the original number and reference numbers used in parts catalogs. This makes it easier to avoid mistakes when selecting a part for a specific engine and accessory configuration.

Practical Application in Service

Replacing the air hose is recommended in situations where symptoms such as rough idling, power loss, mixture-related errors, or visible mechanical damage to the hose occur. Using the correct part restores proper intake system sealing, which directly impacts gasoline engine operation, exhaust emissions, and driving comfort. For workshops and individual users, this is a way to perform a technically correct repair without the need for temporary solutions.

If, during the service of your Mercedes' intake system, you also need other parts from the same group, such as additional hose sections, flexible hoses, or pipes cooperating with the intake, check the available parts in the Mercedes Hoses, Tubes, and Pipes category.

For more complex repairs, including braking system components, practical tips for safely selecting used components may be useful – a detailed discussion of this topic can be found in the article Used Braking System: How to Safely Select Discs, Calipers, and ABS?.