BMW F10 F20 F21 F30 E90 LCI Inlet Intake Manifold With Flap N47N 7807991

The BMW F10 F20 F30 E90 LCI N47N Intake Manifold with Swirl Flaps is an original part from the Intake Manifolds group, designed for BMW diesel engines of the N47N family in popular 3, 5, and 1 Series models. Thanks to integrated swirl flaps, it ensures precise shaping of the air stream, which promotes stable engine operation and correct torque characteristics. This is a solution for users who expect factory intake geometry and the preservation of stock engine parameters.

Specifications and technical data

• SKU: 7807991
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7807991
• Substitutable numbers: 11617807991, 7807991
• Category: Intake Manifolds

Intended Use and Compatibility with N47N Engine

The presented manifold is designed to work with the N47N engine used in BMW F10, F20, F30, and E90 LCI models. The intake design with swirl flaps is adapted to the characteristics of this engine, allowing for proper cylinder filling across various load ranges. This enables the engine control unit to operate under conditions intended by the manufacturer, without the need for software modifications.

Construction of the Intake Manifold with Flaps

The intake manifold with flaps in this version features an integrated variable geometry channel system responsible for directing the intake air. The swirl flaps work in conjunction with the engine's electronic control system, enabling dynamic flow changes depending on RPM and load. This configuration promotes uniform cylinder filling, improved smoothness at low RPMs, and reduced engine vibrations and uneven operation.

The original manifold design ensures proper fitment to the cylinder head, correct channel routing, and preservation of stock mounting points for accessories. This makes installation predictable and ensures that connections to other intake system components remain sealed.

Benefits of Using an Original BMW Intake Manifold

Using an original intake manifold in the N47N engine allows for engine operating parameters to be maintained in line with the manufacturer's specifications. Key benefits include:

• preservation of stock intake channel geometry and swirl flaps,
• correct interaction with the factory engine control unit,
• stable idle and low-RPM operation,
• optimal conditions for the combustion process across the entire load range.

For users who wish to avoid experimenting with aftermarket alternatives, choosing an original part from this group is a safe and predictable solution in terms of operation. Factory fitment reduces the risk of leaks and issues with control system calibration.

Condition, Origin, and Practical Application

The part is a used item, sourced from a dismantled vehicle, and offered as a used BMW intake manifold. This represents a reasonable compromise between cost and maintaining original construction. This type of part is suitable for both standard intake system repairs and as a preventative replacement in vehicles with higher mileage, where maintaining proper swirl flap operation is crucial.

Before installation, standard workshop procedures are recommended: checking for leaks, the condition of the seats, and the operation of associated accessories. A correctly installed manifold will restore proper airflow parameters and reduce common issues related to intake disturbances.

BMW Intake Manifolds – Expansion and Additional Information

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and require other parts from the same group, such as additional manifolds, intake components, or air housings, check the available parts in the BMW Intake Manifolds category.

For drivers interested in a broader context of gas flow modifications in an engine and the impact of intake and exhaust components on engine characteristics, we have prepared a guide – find more information in the article Performance Exhaust System: Used Manifolds and Sport Catalytic Converters on the Road.

If you are considering whether a reconditioned part or an original used part would be a better choice for your situation, you will find helpful tips in the guide Reconditioned or Used Original – Which Part to Choose for Repairs?, which discusses the practical differences between these solutions in the context of real-world operation.