Mercedes-Benz E-Class W210 M112 Petrol Air Intake Hose Pipe Tube A1121410004

Mercedes-Benz E-Class W210 M112 Petrol Air Intake Hose Pipe Tube is a component of the air supply system in petrol engines, responsible for the stable and airtight delivery of air to the power unit. A properly selected intake hose helps maintain correct engine operating parameters, reduce power loss, and ensure a smooth, predictable throttle response. Replacing a worn-out part with the correct hose from the Cables, hoses and pipes group is a simple way to restore the proper operation of the intake system.

Specifications and technical data

• SKU: A1121400312
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1121400312
• Substitutable numbers: A1121400312, A 112 140 03 12, A1121410004, A 112 141 00 04, KZ
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Function and role in the intake system

The intake hose pipe in the M112 petrol engine is responsible for directing the airflow from the filter housing towards the intake manifold while maintaining the appropriate flow geometry. A correctly selected component helps reduce turbulence, leaks, and unwanted suction of contaminants, which translates into stable operation of the power unit across the entire rev range.

The correct intake hose is of particular importance in petrol engines, where the quality of the air-fuel mixture affects engine smoothness, fuel consumption, and exhaust emission levels. Using a dedicated component allows for maintaining the factory airflow characteristics, which is essential both in daily operation and during more dynamic driving.

Selection and compatibility with Mercedes E W210 M112

Mercedes-Benz E-Class W210 M112 Petrol Air Intake Hose Pipe Tube has been designed with the specific architecture of the engine bay in this model in mind. Proper profiling and mounting points allow for correct routing of the hose in the tight space of the engine bay, without the risk of rubbing against other components or excessive material stress.

Selecting the right intake hose is especially important in the case of petrol units, where even small leaks can cause sensor reading errors and disrupt the engine control unit's operation. Using a component intended for a specific body and engine configuration helps avoid assembly problems and ensures predictable behavior of the air supply system.

Component condition and assembly aspects

The offered hose belongs to the group of used parts, which in practice means that it comes from dismantling and may show signs of wear typical for this class of parts. Such components are often chosen for servicing older vehicles, where a reasonable repair cost is important while maintaining the proper functionality of the system.

The assembly process of the intake hose is generally uncomplicated and can be performed in workshop conditions or by an experienced user. It is crucial to maintain:

• correct positioning of the hose relative to other auxiliary components,
• an airtight connection with the filter housing and the intake manifold,
• proper fastening in factory brackets and clamps.

Such an approach minimizes the risk of leaks and unwanted vibrations that could shorten the service life of the component.

Benefits of using a dedicated intake hose

Using the appropriate intake hose in a petrol engine brings measurable operational benefits. The most important include:

• stable air supply to the engine, which promotes smooth operation at idle and under load,
• reducing the risk of unfiltered air entering the system,
• maintaining factory flow characteristics, essential for the operation of sensors and the control unit,
• the ability to restore the correct operating parameters of the intake system after damage or wear of the old component.

For users who want to maintain the structural integrity of the vehicle, using a hose from the Cables, hoses and pipes group intended for a specific model is a technically safe and predictable solution in the long term.

Expanding the intake system service in Mercedes

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 vacuum lines, flexible intake hoses, or rigid air pipes, check the available parts in the Mercedes cables, hoses and pipes category.

For those interested in a broader context of selecting original components and the impact of design on the vehicle's character, an article comparing solutions used in different model generations may be helpful – more information can be found in the material Classic Mini vs modern MINI – how the design has changed and which original Mini parts help preserve their character.