Mercedes W203 W163 2.7 CDI Diesel Air Filter Box Housing A6120900901 A6110902301

Mercedes W203 W163 2.7 CDI Diesel Air Filter Box Housing is a factory intake system component designed for Mercedes C-Class W203 generation diesel engines. It is responsible for securely seating the filter element and ensuring proper airflow to the power unit, which promotes efficient diesel engine operation and reduces contaminants in the intake air. This used, original housing is an excellent choice for professional repairs or restoring a vehicle to factory specifications.

Specifications and technical data

• SKU: A6110902301
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6110902301
• Substitutable numbers: A6110902301, A 611 090 23 01, A 612 090 09 01, A6120900901
• Fuel type: Diesel
• Category: Air Filter Housings

Purpose and function in the intake system

The air filter housing in the Mercedes W203 diesel model plays a key role in the intake system, ensuring airtight airflow from the intake to the intake manifold. The design created by the vehicle manufacturer guarantees the correct positioning of the filter element, which translates into stable power unit operating parameters, proper filtration of contaminants, and reduced pressure drops in the intake.

A properly selected housing minimizes the risk of dust, sand, and other solid particles entering the engine, which is particularly important in diesel units that are sensitive to the quality of air drawn into the combustion chamber.

Benefits of using the original housing

Using the original air filter housing in a Mercedes W203 allows for the maintenance of factory airflow parameters, which is essential for both performance and the durability of the power unit. Compared to aftermarket replacements, the OEM component ensures:

• precise fitment to the mounting points in the engine bay,
• proper compatibility with intake hoses and sensors,
• correctly designed filter chamber volume,
• consistency with factory specifications regarding acoustics and intake noise suppression.

As a result, the intake system maintains stable operating conditions, which promotes uniform fuel mixture combustion and can reduce the risk of long-term diesel engine performance issues.

Component condition and service application

The offered air filter housing is a used part, making it an attractive solution for service repairs where the priority is combining quality with reasonable costs. This type of part is particularly suitable in situations where the existing housing has suffered mechanical damage, deformation, or wear, affecting the integrity of the intake system.

Choosing a used, original component allows for the preservation of factory airflow geometry and compatibility with other system elements, without the need for modifying mounts or hoses.

Selecting the housing for a specific vehicle version

Before installation, it is recommended to verify the compatibility of the housing with the specific engine version and model year of the Mercedes W203, especially in the case of diesel units, where the intake system may vary depending on the variant. Proper fitment ensures:

• trouble-free installation without modifications,
• correct routing of intake hoses and connection ports,
• maintenance of the airtightness of the entire air intake system.

Thanks to this, the housing can be used both for standard replacement of a worn-out part and for a comprehensive rebuild of the intake system in a diesel-powered car.

Expanding the intake system in your Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as additional housings, intake ducts, or mounting elements, check out the available parts in the Mercedes Air Filter Housings category.

When choosing used intake system components, it is also worth paying attention to the general principles of selecting service parts. It may be helpful to read the guide on comparing new and used components – you can find it in the article Car parts – new or used? We compare costs, quality, and durability, which discusses the practical aspects of choosing service solutions.