Mercedes-Benz C-Klasse W203 200 Kompressor M111 Air Intake Filter Box

Mercedes-Benz C-Klasse W203 200 Kompressor M111 Air Intake Filter Box is an original intake system component, designed specifically for the M111 supercharged engine. It ensures stable airflow to the compressor, proper seating of the filter element, and maintains factory engine performance parameters. This is a practical solution for drivers who want to keep their vehicle in a configuration close to the factory standard by using original Mercedes components.

Specifications and technical data

• SKU: A1110940204
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1110940204
• Substitutable numbers: A1110940204, A 111 094 02 04, A1110901201, A 111 090 12 01, BG

Purpose and function in the intake system

The air filter box in the C-Klasse W203 model with the 200 Kompressor M111 engine is responsible for airtight airflow from the intake to the subsequent components of the intake system. The design, tailored to the specific engine unit, allows for maintaining proper flow, reducing pressure drops, and maintaining the correct operating conditions for the mechanical compressor. As a result, the engine can operate under stable conditions, maintaining factory torque and power characteristics.

Construction and fitment for the Mercedes-Benz C-Klasse W203

The presented housing is a component originating from a Mercedes vehicle, which means it is compatible with factory mounting points and other engine bay components. The shape and geometry of the filter box are adapted to the specific layout of hoses, accessories, and covers in the C-Klasse W203 engine bay, which facilitates installation and minimizes the risk of improper fitment.

The original housing design ensures:

• stable mounting of the air filter element,
• proper airflow guidance to the compressor,
• compatibility with factory intake hoses and sensors,
• easy service access when replacing the filter element.

Benefits of using an original filter box

Using an original air filter box in the 200 Kompressor M111 engine allows for maintaining the consistency of the entire intake system. Unlike universal solutions, the factory component is designed with consideration for acoustics, airflow, and temperature resistance in the engine bay. This translates into stable engine operation and a reduction in unwanted vibrations and noise.

A used component of this type is particularly attractive in situations where the existing housing has suffered mechanical damage, deformation, or has broken mounts. Replacing it with an original filter box allows for restoring the correct seating of the filter element and the airtightness of the intake without the need for costly new components.

Using a pre-owned part in service and upgrades

Choosing a used air filter box is a reasonable solution for maintenance repairs and for restoring a car to a factory-like state after intake modifications. This type of part allows you to:

• maintain the original intake system configuration,
• preserve compatibility with factory mounts and covers,
• reduce repair costs while retaining an OEM component.

If you are planning a broader upgrade of your vehicle and want to consciously choose used elements, our guide on popular aftermarket parts may be helpful – check out our overview of the most frequently chosen original used car parts to better plan your next purchases.

Practical installation and maintenance tips

When installing the air filter box in a C-Klasse W203 with a 200 Kompressor M111 engine, it is worth paying attention to the condition of the seals, latches, and intake hoses that work with the housing. Proper seating of the box and an airtight connection to the rest of the intake system have a direct impact on compressor operation, throttle response, and idle stability. It is also good practice to check the condition of the filter element whenever working on the housing to fully utilize the potential of this component.

If you are considering replacing other mechanical components at the same time or are looking for broader information on selecting used parts, take a look at our guide: stock vs. sports suspension and the selection of used components in practice. This will allow you to better plan service work and consciously combine different sub-assemblies in one vehicle.