BMW F20 F21 F22 F30 F31 N47N Filtered Air Intake Hose Pipe 7810745

Description

BMW F20 F21 F22 F30 F31 N47N Filtered Air Intake Hose Pipe is an engine air supply system component designed for BMW 1 and 3 series models equipped with the N47N engine. It is responsible for providing a stable, airtight, and directed air supply to the intake system, which promotes smooth engine operation and proper interaction with the intake manifold. Thanks to the use of the original hose geometry, the correct flow characteristics are maintained, which is essential for the operation of a turbocharged diesel engine.

Specifications and technical data

• SKU: 7810745-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7810745
• Substitutable numbers: 7810745, 13717810745
• Category: Intake Manifolds

Purpose and function in the intake system

The intake hose in this BMW model plays a key role in the N47N engine’s air supply, working in conjunction with components from the Intake Manifolds group. It is responsible for directing the airflow from the filtering system to the manifold, reducing pressure drops and minimizing turbulence, which promotes stable engine operation across the entire rev range.

The properly selected, factory-spec shape of the hose allows for maintaining the correct intake geometry, which is important for both the dynamics and the refinement of the engine. Proper sealing of the connections limits the risk of unfiltered air entering the system and prevents unwanted leaks that could affect sensor readings and engine control unit operation.

Benefits of using the original intake hose

Using an intake hose dedicated to specific generations of the BMW 1 Series F20/F21 and 3 Series F30/F31 with the N47N engine ensures:

• maintenance of factory air flow characteristics in the intake system,
• proper fitment with the intake manifold and other system components,
• reduction of the risk of errors related to incorrect installation or leaks,
• consistency with the factory engine bay design, without the need for modifications.

For the user, this means more predictable vehicle behavior, correct interaction with control electronics, and easier diagnostics in the event of potential faults. Choosing a component from this group allows you to keep the intake system in a configuration close to the factory standard, which is particularly important for daily-driven vehicles.

Product characteristics and installation

The offered hose belongs to the group of original BMW components, which translates into a proper fit with other intake system elements and compatibility with the engine bay design in F20, F21, F30, and F31 models. The item is intended for reinstallation in a vehicle, providing a functional solution for users looking for aftermarket parts.

The hose is prepared for installation in place of the factory component, while retaining the original mounting points. This facilitates the mechanic’s work, reduces service time, and limits the need for additional modifications. Proper routing of the hose in the engine bay also helps maintain service clarity and easier access to adjacent components.

Practical service application

Replacing the intake hose is recommended in situations where symptoms such as power loss, uneven engine operation, oil leaks around the intake, or visible mechanical damage to the hose appear. In the case of the N47N unit, which operates under increased loads, the tightness and stability of the intake system have a direct impact on the durability of the equipment and driving comfort.

Selecting a hose that matches the engine and body design helps avoid collision issues with other components in the engine bay and ensures proper air routing under daily driving conditions. This solution is particularly beneficial for users who want to keep their car in a configuration close to the factory standard while using parts sourced from dismantling.

Expanding knowledge and selecting 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 manifolds, connectors, or additional hose sections, check the available parts in the BMW Intake Manifolds category.

In the case of expanding or upgrading the exhaust and intake flow system, it is also worth checking out tips on selecting aftermarket components – you can find practical advice in the article Performance exhaust system: used manifolds and sports catalytic converters on the road, which discusses, among other things, issues related to manifolds in BMW vehicles.