BMW E81 E87 LCI E90 E91 E92 Intake Manifold With Flap Control N47 7810178

Description

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E81 E87 LCI E90 E91 E92 Intake Manifold With Flap Control N47 is an original intake system component designed for BMW 1 and 3 series diesel engines equipped with the N47 unit. Thanks to its factory design, it ensures proper airflow to the cylinders, stable engine operation, and the maintenance of factory performance parameters. This used OEM part is a sensible choice for repairs when you value consistency with the original BMW design.

Specifications and technical data

• SKU: 7810178-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7810178
• Substitutable numbers: 11617797384, 7797384, 11618507239, 8507239, 7810178, 11617811214, 7811214, 4728712, 11614728712
• Part type: Intake Manifold
• Category: Intake Manifolds

Purpose and function of the N47 intake manifold

The intake manifold in the N47 engine is responsible for the even distribution of air to individual cylinders, which directly affects the engine’s refinement, fuel consumption, and exhaust emissions. For BMW E81, E87 LCI, E90, E91, and E92 models, using the correct manifold is crucial for maintaining the proper operation of the fuel injection system and the turbocharger.

The original manifold design for this series was engineered for the specific airflow parameters of the N47 engine, which is why its use allows for maintaining stable boost pressure, correct air-fuel mixture values, and predictable throttle response. This is particularly important during highway driving and dynamic acceleration, where the intake system operates under higher loads.

Advantages of using an original BMW intake manifold

Choosing an original intake manifold for a BMW with an N47 engine offers a number of practical benefits:

• reliable fitment to the cylinder head and engine accessories characteristic of the E81, E87 LCI, E90, E91, and E92 series,
• preservation of the factory geometry of the intake ports, which promotes stable engine operation,
• compatibility with the stock engine management system and other intake system components,
• reduced risk of leaks and installation issues typical of low-quality aftermarket replacements.

As a result, the intake system remains consistent with the manufacturer’s design, and the engine operates under the conditions intended by BMW engineers. This solution is especially recommended for maintenance repairs when you want predictable vehicle behavior and easy diagnostics in the future.

Product characteristics and installation

The presented manifold belongs to the Intake Manifolds category and is a component intended for installation in the engine bay, in the immediate vicinity of the cylinder head. As a used part, it comes from dismantling, which allows for economical repair while maintaining the original specifications. Before installation, standard service procedures are recommended, such as checking the mating surfaces, verifying vacuum ports, and inspecting the condition of accessory mounting points.

In practice, installing the manifold in an N47 engine requires maintaining cleanliness around the intake ports and using appropriate seals in accordance with the manufacturer’s recommendations. A correctly installed component helps reduce the risk of unfiltered air entering the engine and maintains proper turbocharging performance parameters.

Part selection by numbers and BMW compatibility

The offered manifold is a BMW branded part, which facilitates identification and selection based on the manufacturer’s catalogs. The component has an OEM part number and assigned interchangeable numbers, allowing it to be precisely matched to a specific N47 engine version and vehicle model year. In case of doubt, it is worth comparing the markings with service documentation or the part number of the unit removed from the car.

This approach minimizes the risk of purchasing an incorrect part and allows for maintaining consistency with the vehicle’s factory configuration. For users planning further modifications or diagnostics, maintaining the original intake system specification is a significant advantage.

Intake system expansion and related components

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

When working on the intake system, it is also worth paying attention to the condition of air hoses, the intercooler, the mass air flow sensor, and control elements to ensure the entire system works cohesively. It is good practice to perform computer diagnostics after installation, which allows for quickly detecting any leaks or deviations in engine operating parameters.

More about manifolds and exhaust systems

If you are interested in a broader context of how manifolds work in cars, including the differences between stock and performance solutions, as well as practical tips on purchasing used parts, take a look at the article Performance exhaust system: used manifolds and sports catalytic converters on the road. You will find useful information there that will help you better understand the relationships between the intake system, exhaust system, and vehicle performance.