BMW 1 3 Series F20 F30 N47N 2 Diesel Air Filter Box Intake Silencer 8511655

BMW 1 3 Series F20 F30 N47N 2 Diesel Air Filter Box Intake Silencer is an original intake system component, designed specifically for BMW diesel engines. It ensures stable airflow to the engine, reduces intake noise, and helps maintain the proper operating parameters of the power unit. It is a practical solution for users looking for factory fitment and predictable results after installation.

Specifications and technical data

• SKU: 8511655-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8511655
• Substitutable numbers: 13718511655, 8511655, BG
• Fuel type: Diesel
• Category: Intake Manifolds

Purpose and function in the intake system

The presented BMW 1 3 Series F20 F30 N47N 2 Diesel Air Filter Box Intake Silencer is a component from the Intake manifolds group, compatible with diesel engines in the BMW 1 Series F20 and 3 Series F30. The task of this sub-assembly is to guide cleaned air from the filter to the intake manifold and to reduce unwanted vibrations and intake noise, which translates into smoother engine operation.

Thanks to a design tailored to a specific BMW generation, the intake system maintains the correct flow geometry, which helps maintain stable combustion parameters and proper operation of engine accessories. This is particularly important in modern diesel units, which are sensitive to disturbances in air supply.

Benefits of using an original intake housing

Using an original BMW 1 3 Series F20 F30 N47N 2 Diesel Air Filter Box Intake Silencer brings a number of practical benefits:

• Factory fitment – preservation of the original intake system geometry, without the need for modifications.
• Stable airflow – predictable diesel engine behavior across the full load range.
• Reduction of intake noise – acoustic comfort inside the vehicle at the level intended by the manufacturer.
• Consistency with other intake system components – easier diagnostics and maintenance.

The component from this group is particularly recommended when replacing a damaged or leaking housing, when you want to maintain factory engine performance parameters without experimenting with replacements of uncertain geometry.

Product characteristics and condition

The offered BMW 1 3 Series F20 F30 N47N 2 Diesel Air Filter Box Intake Silencer comes from a BMW vehicle and is classified as a used original part. This means it retains its factory design and compatibility with the intake system, while offering an attractive cost-to-functionality ratio. This type of part works well in daily operation when the priority is proper system functionality rather than tuning modifications.

The product is intended for diesel-powered engines, which is significant both in terms of the shape of the intake ducts and adaptation to the characteristics of a diesel unit. Choosing a component from the same design group minimizes the risk of installation problems and unwanted changes in engine operation.

Fitment, reference numbers, and assembly group

The BMW 1 3 Series F20 F30 N47N 2 Diesel Air Filter Box Intake Silencer has a dedicated OEM part number and associated interchangeable numbers, which facilitates verification of compatibility with a specific BMW 1 Series F20 and 3 Series F30 configuration. Before purchasing, it is worth comparing the markings with the vehicle documentation or consulting the fitment by VIN to ensure that the element will work with the existing intake system and engine accessories.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as intake hoses, filter housings, or intake silencers, check out the available parts in the BMW Intake manifolds category.

Technical support and knowledge about exhaust flow systems

When working with the intake and exhaust systems in modern BMW units, it is worth understanding the relationships between airflow, exhaust gas, and boost pressure. For users interested in a broader context of how these systems work, we have prepared a guide – more information on the selection and operation of flow elements can be found in the article Performance exhaust system: used manifolds and sports catalytic converters on the road.