Mercedes X164 W164 W251 Top Petrol Engine Cover Air Intake Cleaner A2730900401

Mercedes X164 W164 W251 Top Petrol Engine Cover Air Intake Cleaner is an original component from the Tappet and valve covers group, designed for petrol engines. It ensures orderly air routing to the intake system and provides an aesthetic, compact finish to the engine bay in premium Mercedes vehicles. Thanks to its factory geometry and fitment, it serves as a practical solution for servicing or replacing a damaged cover.

Specifications and technical data

• SKU: A2730900401
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2730900401
• Substitutable numbers: A2730900401, A 273 090 04 01, A 273 090 10 01, A2730901001
• Fuel type: Petrol
• Part type: Valve Cover
• Category: Rocker & Valve Covers

Purpose and function in the engine bay

The top engine cover integrated with the air filter area is responsible for the stable routing of the airflow to the intake system and protecting the components located above the cylinder head. In Mercedes petrol engines, it plays an important role in maintaining proper operating conditions by limiting the impact of contaminants and splashes of operating fluids on the area around the tappets and valves. A properly selected cover also helps in reducing mechanical noise and maintaining a consistent temperature in the upper part of the engine, which promotes stable operation of the air supply system.

Benefits of using an original Mercedes cover

Using the original top engine cover in Mercedes X164, W164, and W251 vehicles ensures:

• factory fitment to the mounting points and the shape of the power unit,
• correct air routing in the filter area,
• a consistent, orderly appearance of the engine bay,
• easier service access to selected components after removing the cover. By maintaining the original design, it is possible to remain consistent with the manufacturer's factory specifications, which is particularly important in high-end cars where both functionality and the aesthetics of the engine bay matter.

Technical characteristics and installation

The cover has been designed specifically for engines powered by petrol, which guarantees proper fitment to the shape of the cylinder head and the routing of intake ducts in these units. The design provides for cooperation with the factory air filter system, ensuring that the correct flow geometry is maintained. The component is intended for installation in Mercedes vehicles that use the appropriate configuration of the power unit and accessories. Installation involves seating the cover into the factory mounting points, which facilitates service and reduces the risk of improper positioning in the engine bay.

Product condition and service application

The offered top engine cover is a used component, which makes it an attractive solution for post-accident repairs, replacing damaged plastic elements, or restoring the completeness of the engine bay. In many cases, using second-hand parts allows for maintaining high quality at reasonable service costs while preserving the original manufacturer's specification. This approach is particularly beneficial in vehicles several years old, where the priority is a combination of durability, proper fitment, and an optimal repair budget.

Related components and technical knowledge

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 covers, lids, or elements of the upper engine housing, check the available parts in the Mercedes Tappet and valve covers category. When planning repairs within the engine bay, it is also worth considering the selection of appropriate used body parts and covers. You can find more about the advantages of using original used components compared to replacements in the article: Post-accident repair – used body parts vs. replacements.