BMW F10 F11 F30 F31 Intake Manifold Flap Control N57N 7811909

BMW F10 F11 F30 F31 Intake Manifold Flap Control N57N is an original intake system component designed for BMW N57N diesel engines in F10, F11, F30, and F31 body styles. Thanks to its factory design integrated with swirl flaps, it ensures precise airflow control and stable engine operating conditions. This solution maintains consistency with the factory engine characteristics and facilitates professional repair of the intake system.

Specifications and technical data

• SKU: 7811909
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7811909
• Substitutable numbers: 11617811909, 7811909
• Category: Intake Manifolds

Purpose and role in the intake system

The presented manifold belongs to the Intake Manifolds category and is a component of the intake system responsible for distributing air to individual cylinders in the N57N engine. Using a dedicated manifold for specific generations of BMW 5 Series (F10, F11) and 3 Series (F30, F31) allows for maintaining the correct geometry of the intake channels and proper cooperation with engine accessories.

The presence of flaps in the manifold allows for dynamic shaping of the airflow depending on load and engine speed, which promotes efficient combustion and engine refinement. A properly selected intake manifold is important for both performance and the long-term stability of engine operating parameters.

Construction of the intake manifold with flaps

The intake manifold in this design version integrates intake channels and the flap mechanism controlling airflow into a single housing. This solution:

• ensures the consistency of the intake system with the factory engine control unit,
• facilitates installation by maintaining original mounting points and connections,
• reduces the risk of leaks within the intake connections.

Thanks to the factory channel geometry, the manifold supports even cylinder filling, which is important for smooth torque development and load response. The integrated flaps allow for more flexible adjustment of airflow to current engine operating conditions, which helps maintain proper dynamics and refinement.

Service application and installation

This intake manifold model is intended primarily as a replacement part in case of wear or damage to the factory intake system in N57N engines. Choosing an original BMW solution allows you to:

• maintain compatibility with factory engine control maps,
• reduce the need for additional modifications during installation,
• maintain predictable engine operating parameters after repair.

Due to the specific design of the intake manifold with flaps, installation in a professional service environment is recommended, following the manufacturer's procedures, including checking the intake system for leaks and ensuring correct seating of all connections.

Product characteristics and condition

The offered manifold is a BMW brand part from the original components group, which promotes compatibility with factory engine accessories and other intake system components. The product is a salvaged part, which allows for an economical restoration of system efficiency while maintaining the original design. This type of solution is often chosen by professional workshops specializing in the service of modern BMW diesel engines.

Knowledge expansion and part selection

If you want to better understand the impact of gas flow elements on engine performance characteristics and are looking for practical tips on selecting used manifolds, it is worth checking out our guide on our blog: Performance exhaust system: used manifolds and sports catalytic converters on the road. The article discusses, among other things, issues related to the selection of manifolds in premium vehicles such as 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 intake manifolds, intake channel elements, or intake system housings, check out the available parts in the BMW Intake Manifolds category.