BMW 1 3 Series E87 E90 E91 Petrol N52 Cover Air Filter Box Intake Silencer

BMW 1 3 Series E87 E90 E91 Petrol N52 Cover Air Filter Box Intake Silencer is an original air intake system component, designed specifically for the E87, E90, and E91 models. This component from the Air and fuel intake sensors category is responsible for stable airflow to the engine and reducing intake noise, which translates into smoother engine operation and predictable performance.

Specifications and technical data

• SKU: 7541736-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7541736
• Substitutable numbers: 13717541736, 7541736, PK
• Fuel type: Petrol
• Category: Air Intake & Fuel Sensors

Purpose and function in the intake system

The presented air filter box integrated with the intake silencer was developed by BMW for the N52 petrol engines used in the 1 Series E87 and 3 Series E90/E91. This element directs air from the intake in the engine bay to the filter and then to the intake manifold, while simultaneously limiting turbulence and unwanted acoustic resonances.

Thanks to properly shaped internal channels and chambers, the housing stabilizes airflow, which promotes even cylinder filling and correct operation of the mixture control system. The integrated intake silencer reduces intake noise levels, which is particularly noticeable at higher petrol engine speeds.

Benefits of using an original intake housing

Using a factory air filter box with an intake silencer in the N52 engine ensures:

• proper fitment to the stock mounting points in the engine bay,
• compatibility with the stock intake channel geometry,
• maintenance of factory acoustic and flow parameters,
• cooperation with elements from the Air and fuel intake sensors category, such as mass air flow sensors or air temperature sensors (if present in the specific configuration).

For petrol units, the repeatability of air intake conditions is particularly important – the correct intake housing helps maintain a stable mixture, which promotes engine refinement, throttle response, and correct operation of diagnostic systems.

Installation characteristics and application

The air filter box with intake silencer is designed for petrol-powered vehicles equipped with the N52 engine in E87, E90, and E91 bodies. The design is prepared for installation in factory mounting points, which facilitates the replacement of a damaged or missing element without the need for modifications to the intake system.

As a part from the Air and fuel intake sensors group, the component works with the stock engine control electronics, maintaining the flow parameters intended by the manufacturer. This solution is particularly beneficial when restoring a car to its factory specification after modifications or accident repairs.

Product condition and use of a used part

The offered item is used, which allows for an economical repair of the intake system while maintaining the original BMW design. Choosing parts from dismantling is often advantageous in the case of housing elements and intake silencers, which do not contain moving mechanical components, and their main function is to shape airflow and dampen noise.

If you are considering using second-hand components in your car and want to better understand when such a solution makes sense, it is worth reading the advice on electronics and accessories – you will find practical tips in the article Second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.

Expansion of the intake system in BMW

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 filter housings, intake ducts, or elements working with flow sensors, check the available parts in the BMW Air and fuel intake sensors category.