Air Intake Pipe Mercedes W204 W212 OM651 Intercooler Hose Silencer A6511400087

Visual condition of the part 

The product shows signs of use visible in the photos. 

Air Intake Pipe Mercedes W204 W212 OM651 Intercooler Hose Silencer is a component from the Lines, hoses and pipes group, designed for the OM651 intake system in W204 series models. It is responsible for the stable guidance of the airflow, which promotes smooth engine operation and proper interaction with auxiliary equipment.

Specifications and technical data

• SKU: A6511400087
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6511400087
• Substitutable numbers: A6511400087, A 651 140 00 87
• Category: Hoses, Lines & Pipes

Purpose and function in the intake system

Air Intake Pipe Mercedes W204 W212 OM651 Intercooler Hose Silencer operates in the engine air supply area, connecting the intake system components into a coherent, airtight flow path. A properly selected pipe reduces pressure drops, minimizes the risk of leaks, and supports stable engine performance across the full load range.

The original design solution ensures matched geometry, appropriate flow diameter, and a shape adapted to the W204 engine bay with the OM651 unit. As a result, installation is predictable, and the pipe maintains the correct positioning relative to other components.

Technical characteristics and benefits of use

The element belongs to the Lines, hoses and pipes group, meaning it has been designed to operate under conditions of variable temperatures, vibrations, and pressure loads typical for an intake system. The pipe's construction promotes:

• maintaining the airtightness of the air path during daily operation,
• reducing unwanted turbulence in the airflow,
• stable cooperation with the OM651 engine equipment.

Using an original solution dedicated to the W204 allows for maintaining the factory performance characteristics of the engine without the need to modify other system components.

Condition of the item and installation aspects

The offered air pipe is in used condition, which allows for an economical replacement of a worn or damaged hose while maintaining the original specification. Before installation, a standard visual inspection for any signs of wear typical of dismantled parts is recommended.

The pipe is intended for installation in the factory mounting points in the W204 engine bay with the OM651 unit. Thanks to the preservation of the original geometry, it is possible to restore the original routing of the pipe, which facilitates service and subsequent maintenance activities within the intake system.

Application in service and operation

Replacing the air pipe is recommended in situations where symptoms such as power loss, unstable engine operation, or visible mechanical damage to the hoses in the engine bay occur. Using an original pipe dedicated to the OM651 in the W204 helps restore proper airflow and reduce the risk of leaks that may affect combustion parameters.

For users preparing their vehicle for more intensive use or longer trips, replacing worn intake system components with verified Mercedes parts is a reasonable preventive measure that supports the stability of the engine's operation.

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

To better plan service work when preparing your car for low temperatures and to assess which used intake system components are worth checking, the following guide will be helpful: Winter essentials: which used car parts are worth checking and replacing before the frost?.