Mercedes W169 W245 OM640 CDI Diesel Air Filter Box Housing A6400900701

The Mercedes W169 W245 Air Filter Housing Diesel OM640 is an original air filter housing from the Mercedes group, designed for diesel engines. This component is engineered to ensure stable air delivery to the diesel engine, promoting smooth operation of the intake system and effective contaminant filtration.

Specifications and technical data

• SKU: A6400900701
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6400900701
• Substitutable numbers: A6400900701, A 640 090 07 01, BG
• Fuel type: Diesel
• Category: Air Filter Housings

Purpose and Function of the Air Filter Housing

The air filter housing in Mercedes W169 and W245 models with the OM640 diesel engine is responsible for securely seating the filter element and properly directing the airflow to the intake manifold. A correctly selected housing:

• ensures stable mounting of the air filter element,
• limits the ingress of contaminants into the intake system,
• maintains the appropriate airflow cross-section for the diesel engine,
• minimizes the risk of leaks and performance drops in the powertrain.

Thanks to its construction conforming to factory standards, the housing works seamlessly with the intake system and engine accessories, preserving the parameters specified by the manufacturer.

Benefits of Using an Original Air Filter Housing

Using a component from the Air Filter Housings category specifically designed for Mercedes ensures the preservation of the diesel engine's original operating characteristics. In practice, this means:

• appropriately sized intake duct geometry,
• compatibility with factory mounting points and engine bay accessories,
• maintenance of the manufacturer-specified intake air noise level,
• easier servicing during air filter element replacement.

The original housing design is particularly crucial for diesel engines, where stable and clean air supply impacts the smoothness of operation, fuel consumption, and engine longevity.

Condition, Origin, and Diesel System Compatibility

The presented air filter housing is a used part, originating from the factory intake system of a Mercedes. This ensures that the original mounting points and shape are preserved, tailored to the engine bay of W169 and W245 models with a diesel engine. The component is designed to work with diesel engines, which is important for:

• appropriate selection of air duct cross-sections,
• compatibility with the factory intake system and hoses,
• correct seating of sensors and connections intended for this engine version.

For the user, this means it can be installed in place of the factory housing without the need for structural modifications.

Application in Service and Operation

Replacing the air filter housing is recommended when the factory component has suffered mechanical damage, deformation, or leaks that affect engine performance. For diesel engines, it is particularly important for the intake system to be sealed and stable, as:

• leaks can cause unfiltered air to be drawn in,
• disrupted airflow affects combustion parameters,
• improper intake operation can generate engine control unit errors.

Selecting a housing that matches the Mercedes W169/W245 design helps mitigate these risks and restore proper intake system operating conditions.

Related Mercedes Air Filter Housings

If you are looking for other Mercedes Air Filter Housings compatible with different models of this brand, check out the Mercedes Air Filter Housings available in our store to find the right part for your specific engine version and body type.

How to Care for Your Intake System Before Winter

When preparing your car for the winter season, it's worth paying attention not only to the filter element but also to the condition of the housing and the overall seal of the intake system. A damaged housing can accelerate filter wear and negatively affect the performance of a diesel engine in low temperatures. You can find more practical tips in the article Winter Essentials: Which Used Car Parts Are Worth Checking and Replacing Before the Frost?, which describes key components requiring inspection before the onset of freezing temperatures.