Air Intake Pipe BMW F20 F30 N47S1 Intercooler Tube Hose Line Silencer 8509815

Visual condition of the part

The product shows signs of use visible in the photos.

Air Intake Pipe BMW F20 F30 N47S1 Intercooler Tube Hose Line Silencer is an intake system component responsible for stable airflow between the intercooler and the engine. Thanks to its factory geometry and precise fit for the N47S1 unit, it ensures proper airflow, reduces pressure drops, and supports efficient turbocharger operation in BMW 1 Series F20 and 3 Series F30 vehicles.

Specifications and technical data

• SKU: 8509815-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8509815
• Substitutable numbers: 8509815, 13718509815
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the intake system

The air intake pipe in this BMW model operates in a demanding environment of high boost pressure and variable temperatures typical of diesel engines. It is responsible for:

• routing compressed air from the intercooler to the intake manifold,
• maintaining the airtightness of the boost system,
• damping unwanted vibrations and flow noise,
• stable cooperation with the turbocharger and intercooler.

By maintaining the original pipe geometry, the intake system preserves factory flow parameters, which promotes proper diesel engine operation and reduces the risk of errors related to boost pressure.

Construction and fitment for BMW F20/F30

This item belongs to the Lines, hoses and pipes group and is designed specifically for the engine bay architecture of the BMW F20 and F30 with the N47S1 unit. Properly profiled sections, diameters, and mounting points allow for:

• trouble-free seating in factory brackets and clamps,
• correct routing relative to the radiator, intercooler, and engine accessories,
• maintaining required clearances from other components.

Such fitment reduces stress in the system, lowers the risk of chafing and leaks, and facilitates future vehicle maintenance.

Benefits of using an original intake pipe

Using an intake pipe dedicated to a specific BMW engine unit translates into a number of practical operational benefits:

• Stable boost pressure – the correct cross-section and length of the pipe help maintain the performance parameters of the turbocharger and intercooler.
• Reduction of air leaks – factory sealing points reduce the risk of power loss and smoke resulting from intake leaks.
• Compatibility with diesel accessories – the pipe is adapted to the operating characteristics of a diesel engine, including higher pressure loads.
• Easier diagnostics – maintaining the original intake system makes work easier for mechanics and diagnosticians, especially when analyzing airflow-related errors.

For BMW F-series users who want to keep their vehicle in a configuration close to factory specifications, this component is a safe and predictable service choice.

Characteristics of the used component

The offered pipe is a dismantled part and is classified as a used item. This means it may show signs of wear typical of operation in an engine bay, while maintaining the functionality required for further use. For many users, this represents a reasonable compromise between cost and maintaining the original intake system specification.

Before installation, a standard visual inspection for potential mechanical damage and proper seating in existing clamps and connectors is recommended to fully utilize the potential for system tightness and stability.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other items from the same group, such as intake pipes, intercooler hoses, or vacuum lines, check out the available parts in the BMW Lines, hoses and pipes category.

Selecting the right part and additional support

When selecting an intake pipe for a specific version of the BMW F20 or F30 with a diesel engine, it is crucial to verify compatibility with the engine unit designation and the intake system configuration. It is worth paying attention to the shape, the arrangement of the ports, and the mounting method to avoid installation problems.

If you want to better understand how to professionally select used intake system components and other parts for your car, use the practical expert tips available in the article No more bad purchases! How to professionally select used car parts. This will make it easier for you to assess part compatibility and optimize service costs.