BMW E90 320si Petrol N45 Intake Manifold Air Inlet 11617547644 7547644

BMW E90 320si Petrol N45 Intake Manifold Air Inlet is a precisely engineered intake system component, dedicated to the N45 petrol engine in the BMW 3 Series E90 320si model. It is responsible for the stable air supply to the engine, which translates into predictable performance characteristics and proper throttle response. Thanks to its design compliant with the manufacturer's standards, this intake manifold ensures a proper fit to the cylinder head and engine accessories.

Specifications and technical data

• SKU: 7547644-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7547644
• Substitutable numbers: 11617547644, 7547644
• Fuel type: Petrol
• Category: Intake Manifolds

Purpose and function in the N45 engine

The intake manifold in the BMW E90 320si with the N45 petrol engine is responsible for the even distribution of air to all cylinders. A correctly selected component from this group is crucial for:

• stable operation of the power unit across the entire rev range,
• maintaining the correct air-fuel mixture ratio,
• proper cooperation with the engine control system,
• reducing power drops resulting from leaks or deformation of the intake system.

In the case of the specialized 320si version, the use of the appropriate intake manifold is of particular importance for maintaining the engine characteristics intended by BMW.

Compatibility and fitment

The presented manifold belongs to the Intake Manifolds group intended for BMW vehicles, which means a design consistent with factory mounting points and the intake duct layout. The component is prepared for use with a petrol engine, ensuring consistency with the factory fuel and control system.

As a part sourced from dismantling, the intake manifold ensures original duct geometry and proper fitment to other intake components, which facilitates installation and reduces the risk of compatibility issues.

Characteristics of the used intake manifold

The offered component is in used condition, which in practice means it comes from an operated vehicle but retains the functionality required for further operation in the intake system. This type of part is particularly attractive to users who:

• are looking for a solution consistent with the factory BMW specification,
• want to reduce repair costs while maintaining the original design,
• prefer components with proven, serial intake duct geometry.

Choosing a used intake manifold allows for restoring proper engine operation in situations where the previous component has suffered mechanical damage, deformation, or leaks.

Benefits of using an original BMW intake manifold

Using an intake manifold dedicated to the BMW E90 320si with the N45 petrol unit provides a number of practical benefits. The most important include:

• Factory fitment – maintaining the original geometry and mounting points facilitates installation and minimizes the risk of modifications.
• Consistency with the control system – the manifold design is adapted to the engine's operating characteristics and control maps.
• Stable engine operation – proper air distribution to the cylinders supports smooth operation of the power unit.

For users who value maintaining the original vehicle parameters, such an intake manifold is a sensible service choice.

Other items from the BMW Intake Manifolds group

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 additional manifolds, intake elements, or components cooperating with the air supply system, check the available parts in the BMW Intake Manifolds category.

More about intake and exhaust systems

If you want to better understand the relationships between the intake and exhaust systems and the impact of the components used on engine performance characteristics, it is worth checking out expert materials. Practical tips on selecting used manifolds can be found in the article Performance exhaust system: used manifolds and sports catalytic converters on the road, which discusses, among other things, solutions used in BMW and other popular brands.