Air Filter Box Mercedes W204 W212 OM642 Diesel Left N/S Housing A6420903501

The Mercedes W204 W212 OM642 Air Filter Housing is an original intake system component designed for OM642 diesel engines, used in the W204 C-Class and W212 E-Class models. This factory housing, mounted on the left side of the engine bay, ensures proper air routing to the filter and subsequent intake components, contributing to stable diesel engine operation. A used OEM component is a sensible choice for users seeking parts with proven geometry and fit for a specific body version.

Specifications and technical data

• SKU: A6420903501
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420903501
• Substitutable numbers: A6420903501, A 642 090 35 01, A6420903101, A 642 090 31 01
• Location on the vehicle: Left
• Fuel type: Diesel
• Category: Air Filter Housings

Purpose and Compatibility with OM642 Engine

The presented air filter housing has been specifically designed for the OM642 engine, a six-cylinder diesel unit widely used across the Mercedes range. The housing's construction is adapted to:

• the intake system characteristic of the OM642,
• the layout of accessories in the engine bay of W204 and W212 models,
• the airflow required by a turbocharged diesel engine.

This ensures proper sealing and airflow direction, which reduces the risk of contaminants entering the filter and further into the intake system.

Construction and Function of the Air Filter Housing

The air filter housing in this model performs several key functions within the intake system. In addition to mechanically securing the filter element, it is responsible for:

• directing air from the intake system to the filter and then to the manifold,
• dampening the noise of the intake air,
• securely mounting the filter element in the correct position,
• maintaining seal integrity between the intake part and the subsequent part of the intake.

A properly selected housing helps maintain engine operating parameters, such as uniform cylinder filling, correct readings from air flow sensors, and appropriate turbocharging characteristics. For diesel engines, this has a direct impact on running smoothness, fuel consumption, and exhaust emissions.

Vehicle Placement and Installation Aspects

The component is designed for installation on the left side of the vehicle, in accordance with the factory design of the engine bay in Mercedes W204 and W212 diesel models. Proper placement is important for:

• routing intake pipes and flexible connectors,
• maintaining clearance from hot components (turbo, exhaust manifold),
• easy service access to the air filter element.

Using an original housing allows for the preservation of factory mounting points and the intake geometry intended by the manufacturer, which simplifies installation and reduces the need for additional modifications.

Benefits of Using an Original Air Filter Housing

Choosing an original air filter housing for a Mercedes with an OM642 diesel engine offers a number of practical benefits:

• Factory Fit – maintains compatibility with the intake system, mountings, and accessories in the engine bay.
• Stable Engine Performance – proper airflow, which promotes correct operation of the injection system and turbocharging.
• Reduced Risk of Leaks – proper component fit minimizes the possibility of un-filtered air being drawn in.
• Economical Repair – a used OEM part allows for the restoration of intake system functionality without the need to invest in expensive aftermarket alternatives.

Mercedes Air Filter Housings – Selection and Additional Information

If you are looking for other Mercedes air filter housings compatible with different models and engine versions, check out our dedicated category: Mercedes air filter housings. You will find a wide selection of OEM components there, which will make it easier to choose the right part for a specific chassis number and engine type.

For users interested in operating four-wheel-drive vehicles and the impact of the intake system and diesel engine accessories on drivetrain durability, we recommend the guide article: xDrive, 4Matic, quattro or 4Motion – comparison of AWD drives from BMW, Mercedes, Audi and VW. This is a practical supplement to knowledge about servicing and selecting used components in modern drivetrain systems.