BMW 1 3 Series E87 E90 LCI N45N Air Intake Silencer Rubber Boot Pipe 7555289

BMW E81 E87 E90 N45N Air Hose Pipe Tube is an original part from the Hoses, Pipes & Tubes category, designed for the intake system in selected BMW models with the N45N engine. Manufactured as a genuine BMW part, it ensures proper airflow, stable engine operation, and compatibility with the factory engine bay architecture.

Specifications and technical data

• SKU: 7555289
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7555289
• Substitutable numbers: 13717555289, 7555289
• Category: Hoses, Lines & Pipes

Purpose and Function of the BMW Air Hose

The presented air hose is an intake system component responsible for directing air to the engine in BMW 1 Series E81/E87 and 3 Series E90 models with the N45N unit. The precisely designed shape and diameter of the hose maintain optimal flow parameters, contributing to stable engine performance, accurate throttle response, and predictable fuel consumption.

As a part of the Hoses, Pipes & Tubes group, this element works in conjunction with other intake components, such as the air filter housing, mass airflow sensor, and intake manifold, creating a cohesive and sealed system. Using an original hose minimizes the risk of leaks, improper fit, and unwanted engine vibrations.

Construction and Fitment for BMW E81, E87, E90 N45N

The Air Hose Pipe Tube has been specifically designed for the engine bay geometry of the mentioned BMW generations, considering wiring routing, mounting points, and proximity to other components. This ensures a tidy installation without the need for modifications or additional adapters.

Key design features of this component include:

• a profile tailored to the N45N engine's intake system,
• maintenance of the factory air routing path,
• compatibility with original clamps and brackets,
• resistance to typical engine bay operating conditions (temperature, vibrations, moisture).

This precise fitment helps maintain the factory order in the engine bay, simplifies servicing, and reduces the risk of interference with other elements, such as electrical wiring or the cooling system.

Condition, Verification, and Benefits of Using Genuine BMW OEM Parts

The offered air hose is a BMW part sourced from disassembly, meaning it has been previously used in a vehicle. This type of OEM part retains its original geometry and compatibility with the factory system, while also offering an economical alternative to a new component. In practice, this translates to a favorable cost-to-quality ratio and guaranteed fitment for the specific engine version.

Replacing a damaged, brittle, or leaking hose with an original air hose allows you to:

• reduce the risk of power loss due to improper airflow,
• minimize the possibility of engine control unit errors related to the intake system,
• maintain stable engine operating parameters across the entire RPM range,
• preserve the factory routing of hoses and the aesthetic appearance of the engine bay.

Installation and Selection Based on Technical Data

Selecting the correct air hose for a specific BMW E81, E87, or E90 with an N45N engine should be based on the manufacturer's catalog data and part numbers. In practice, OEM part numbers and available cross-references are most commonly used to precisely verify component compatibility with a specific equipment version and model year.

During installation, pay attention to:

• the condition of clamps and hose clips – replace them if necessary,
• proper routing of the hose relative to other systems,
• secure seating of the ends in their sockets to prevent leaks,
• checking adjacent intake system components for damage.

This approach allows for the restoration of correct operating conditions for the entire intake section in a single service operation, which is important for both engine longevity and driving comfort.

Related BMW Hoses, Pipes & Tubes and Technical Knowledge

If you need other BMW Hoses, Pipes & Tubes for your car, check out the BMW Hoses, Pipes & Tubes available in our assortment to find a complete solution for your intake, cooling, or other systems.

When performing service work on the engine and its accessories, the fuel system is often also a relevant topic. It is then worthwhile to access practical knowledge – we recommend the article Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair, which helps to understand the relationships between intake, fuel supply, and engine control, and facilitates informed part selection by OEM numbers.

Summary

The BMW E81 E87 E90 N45N Air Hose Pipe Tube is a genuine intake system component that ensures proper airflow and full compatibility with the N45N engine design. Choosing an original hose from the Hoses, Pipes & Tubes group allows for the restoration of correct engine operating conditions, reduces the risk of leaks, and maintains the factory order in the engine bay, which is important for both reliability and future servicing.