Air Filter Box Mercedes W164 OM642 Air Intake Housing Left N/S A6420900701

Air Filter Box Mercedes W164 OM642 Air Intake Housing Left N/S is an intake system component designed for Diesel engines, responsible for effective cleaning of the intake air on the left side of the engine compartment. Precise fitment to the Mercedes design ensures stable seating, proper airflow, and maintenance of the engine's factory performance parameters. It is a practical solution for users who want to maintain engine efficiency while keeping service costs reasonable.

Specifications and technical data

• SKU: A6420900701
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420900701
• Substitutable numbers: A6420900701, A 642 090 07 01, BG
• Location on the vehicle: Left
• Fuel type: Diesel
• Category: Air Filters

Purpose and function in the intake system

The left air filter in the Mercedes ML W164, operating within the diesel engine intake system, is responsible for separating solid contaminants from the air drawn into the intake manifold. A properly selected component helps limit the ingress of dust and particles into the cylinders, which promotes stable engine operation, uniform combustion of the mixture, and maintenance of proper performance across the entire load range.

Thanks to its dedicated placement on the left side of the engine compartment, the filter works with the factory housing and intake ducts, which helps maintain the correct flow resistance and parameters required by the engine control unit. Such fitment is particularly important in modern diesel units, where the intake system has a direct impact on performance and exhaust emissions.

Benefits of using a dedicated air filter

Using a filter designed specifically for the Mercedes ML W164 on the left side allows for consistency with the vehicle's factory design. In practice, this means:

• maintaining proper airflow to the diesel engine,
• reducing the risk of contaminants entering the combustion system,
• better protection of cooperating components within the intake area,
• maintaining predictable engine performance parameters.

For the user, this translates into more repeatable performance, stable throttle response, and the ability to maintain engine efficiency for longer with proper maintenance.

Component characteristics and installation

The filter belongs to the Air filters group, which means it is designed to operate in the demanding environment of the engine compartment, under variable temperatures and flow loads. The placement on the left side of the vehicle requires maintaining the correct orientation during installation so that the filtration surface works with the factory housing and air intake ducts.

The used component can be a solution for users looking for parts with preserved functionality while reducing costs. Before installation, standard visual verification and fitting to the existing structure are recommended to ensure the tightness of the intake system and proper seating in the housing.

Application in Mercedes vehicles with Diesel engines

The filter has been prepared for use with Diesel engines used in the Mercedes ML W164, where a sufficiently efficient air filtration system is required. In diesel engines, the quality of air supplied to the cylinders has a significant impact on the combustion process, which is why the proper selection of the filtering element is crucial for maintaining operating parameters and reducing component wear.

In vehicles of this class, often operated in varied road conditions, a properly selected air filter helps limit the impact of environmental dust on the intake system, which promotes longer engine life and stability of the equipment's operation.

Expanding air filtration service

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 filter inserts, housings, or intake ducts, check the available parts in the Mercedes Air filters category.

If you are interested in a broader context of using aftermarket parts in vehicles such as Mercedes, BMW, Audi, MINI, or VW, it is worth reading an article describing practical scenarios for upgrading and maintaining older models: The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years.