Air Filter Box Mercedes W164 OM642 Air Intake Housing Right O/S A6420900901

Air Filter Box Mercedes W164 OM642 Air Intake Housing Right O/S is a factory intake system component designed for diesel engines, ensuring stable mounting of the filter element and proper airflow to the engine. Thanks to its precise fit for the right side of the engine bay in the ML W164 model, the housing guarantees the maintenance of factory flow geometry and correct interaction with other intake components. This is a practical solution for users looking for an original design with predictable performance parameters in diesel-powered vehicles.

Specifications and technical data

• SKU: A6420900901
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420900901
• Substitutable numbers: A6420900901, A 642 090 09 01, BG
• Location on the vehicle: Right
• Fuel type: Diesel
• Category: Air Filters

Function and role in the intake system

The air filter box housing on the right side of the Mercedes ML W164 is responsible for the airtight sealing of the filter element and directing the airflow sucked in by the diesel engine. A correctly selected housing:

• stabilizes the filter element and prevents it from moving during engine operation,
• limits the ingress of contaminants from the engine bay into the intake ducts,
• maintains the manufacturer-designed airflow path, which promotes smooth engine operation,
• supports the maintenance of proper mixture parameters in diesel engines.

Thanks to its factory geometry and fitment for the specific model, the intake system retains its design characteristics, which is important for both performance and engine durability.

Purpose and installation compatibility

The presented housing is a component dedicated to the right side of the engine bay in a Mercedes ML W164 with a diesel engine. The right-side placement means the design has been engineered for specific routing of hoses, mounts, and adjacent components, which facilitates installation and minimizes the risk of stress or leaks.

In practice, this means that:

• mounting points align with factory brackets on the body,
• nozzles and connections are set at the correct angle relative to the intake hoses,
• the housing does not interfere with other engine auxiliary components.

For the user, this translates into efficient installation without the need for modifications and the preservation of original air duct routing.

Performance characteristics of the used component

The air filter box housing is offered as a used part, which in many cases represents a reasonable compromise between cost and maintaining the original manufacturer specification. A component of this type, provided its structural integrity and mounts are intact, continues to perform its task in guiding and protecting intake air.

Choosing a used housing is particularly important in vehicles where maintaining the factory intake system is essential, for example due to:

• maintaining compatibility with factory engine control unit maps,
• limiting the risk of unwanted turbulence in the intake,
• maintaining the correct position of sensors and hoses interacting with the housing.

Benefits of using an original air filter housing

Using an original air filter box housing in a Mercedes ML W164 with a diesel engine provides a number of practical operational benefits. The most important include:

• Factory fitment to the body and accessories – no need to modify brackets, hoses, or adjacent components.
• Consistency with the intake system design – maintaining the manufacturer-intended direction and cross-section of airflow.
• Reduced risk of leaks – proper sealing against the filter element and other housing components.
• Stable diesel engine operation – even airflow promotes the correct operation of the fuel injection system and control systems.

For users who want to keep their vehicle in a configuration close to factory, choosing such a housing is a practical service solution.

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 housings, inserts, or intake hoses, check the available parts in the Mercedes Air Filters category.

Additional technical support

When performing service work within the powertrain, including interference with the intake and components interacting with the engine, it is worth paying attention to the condition of other sub-assemblies, such as the clutch or drivetrain components. In practical terms, these issues are discussed in the article: Clutch and dual-mass flywheel – diagnostics and selection of parts for the drivetrain, which can be a helpful supplement to your knowledge when planning broader service work.