Mercedes W204 M271 Air Filter Box Holding Element Cover A2710940304

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W204 M271 Air Filter Box Holding Element Cover is a factory housing from the Air filter housings group, designed for M271 petrol engines in W204 series models. The original design ensures proper intake air routing, stable mounting of the filter element, and compatibility with factory mounting points in the engine bay.

Specifications and technical data

• SKU: A2710940304
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2710940304
• Substitutable numbers: A2710940304, A 271 094 03 04
• Fuel type: Petrol
• Category: Air Filter Housings

Purpose and function in the intake system

The air filter cover in the M271 petrol engine is responsible for tightly sealing the filter element and directing the airflow into the intake manifold. A properly selected housing reduces turbulence, helps maintain stable mixture parameters, and supports smooth engine operation, which translates into engine refinement and predictable throttle response.

In the case of modern Mercedes engines, it is crucial to maintain the original geometry of the intake ducts – using a dedicated cover minimizes the risk of leaks, unwanted intake noise, and a drop in intake system efficiency.

Construction and fitment for Mercedes W204 with M271 engine

The cover has been designed specifically for the W204 engine bay architecture with the M271 unit, ensuring:

• compatibility with factory mounting points on the body,
• proper seating on the air filter housing,
• cooperation with the stock intake system and engine accessories.

Such fitment facilitates assembly and disassembly during service, and also reduces stress on plastic intake components. The original air filter housing allows for maintaining the factory airflow configuration, which is important both during daily use and more dynamic driving.

Benefits of using the original air filter cover

Using a dedicated cover in the intake system brings a number of practical benefits:

• Stable engine operating parameters – maintaining factory airflow promotes consistent mixture values and correct engine control unit operation.
• Limiting the ingress of contaminants into the filter element thanks to proper housing sealing.
• Better intake system acoustics – reduction of unwanted air intake noise.
• Easier service maintenance – predictable disassembly and assembly in accordance with the manufacturer's documentation.

For users who value the consistency of technical solutions in Mercedes vehicles, choosing such a cover is a reasonable way to maintain the original characteristics of the power unit.

Product characteristics and application in petrol vehicles

The presented air filter cover is a component intended for engines powered by petrol, which is significant due to the specific requirements of the intake system in these types of units. The housing design is adapted to the airflow parameters and the layout of accessories in the M271 engine, which helps maintain factory settings and operating characteristics.

The product comes from the segment of used original parts, which allows combining an attractive purchase cost with compliance with factory solutions. For many W204 model owners, this is an effective way to restore the proper operation of the intake system after damage or wear of the previous housing.

Intake system expansion and additional materials

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 additional housings, intake ducts, or mounting elements, check the available parts in the Mercedes air filter housings category.

For owners of older Mercedes models who want to consciously use used components when refreshing their car, an article describing practical scenarios for modernization and part selection may be helpful – you can find it here: The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years.