BMW F15 F16 F30 F32 Diesel N57N N57Z Intake Filtered Air Pipe Tube Hose 8512381

BMW F15 F16 F30 F32 Diesel N57N N57Z Intake Filtered Air Pipe Tube Hose is an original air intake system component for diesel engines, designed for 3 and 4 series models. Thanks to its factory geometry and precise fit for N57N and N57Z units, it ensures stable airflow, which promotes smooth engine operation and predictable performance. It is a practical solution for users looking to restore the proper function of the intake system after damage or wear of the existing pipe, while maintaining consistency with the factory BMW design and guaranteed compatibility with the intake system. Additionally, using an original intake pipe helps maintain stable diesel engine operating parameters in daily use.

Specifications and technical data

• SKU: 8512381-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8512381
• Substitutable numbers: 13718512381, 8512381, 13718507369, 8507369, 13718509817, 8509817, 13714743398, 4743398, KZ
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the intake system

The presented intake pipe is a component in the Hoses, pipes and tubes category, responsible for directing air to the engine unit. In BMW N57N and N57Z diesel engines, a properly selected intake pipe is important for:

• maintaining proper airflow across the entire RPM range,
• reducing pressure drops in the intake system,
• stable operation of the turbocharging and intake system,
• preserving the factory performance characteristics of the diesel engine.

The appropriate rigidity and shape of the intake pipe help minimize unwanted vibrations and the risk of leaks, which is especially important in diesel units operating under higher loads.

Compatibility and reference numbers

The pipe has been designed as a component compliant with BMW factory standards for diesel units, which facilitates part selection based on the OEM number and available interchangeable numbers. The presence of multiple reference numbers allows the pipe to be matched to a specific vehicle configuration based on catalog data, without the need for aftermarket replacements of uncertain origin. As a result, the user gains greater confidence that the component will work with other intake system parts in a predictable manner consistent with the manufacturer's specifications.

Performance characteristics and installation

As a part sourced from dismantling, the intake pipe offers a favorable price-to-quality ratio while maintaining original BMW specifications. This type of component is particularly useful for:

• repairs following mechanical damage in the engine bay,
• eliminating leaks in the intake system,
• restoring the factory configuration after previous modifications,
• preventive maintenance in high-mileage vehicles.

The pipe is ready for installation in place of the factory element, maintaining original mounting points and routing. This helps reduce service time and limits the risk of fitment issues typical of non-original solutions.

Benefits of using an original BMW intake pipe

Using an original intake pipe in a BMW diesel engine translates into a number of practical benefits:

• Consistency with factory design – maintaining the original geometry of the intake system promotes stable engine operating parameters.
• Better service predictability – the mechanic can rely on the manufacturer's documentation, which facilitates diagnostics and potential future repairs.
• Reduced risk of leaks – matched diameters and shapes contribute to proper sealing of connections.
• Seamless cooperation with diesel engine accessories – the intake system remains compliant with the requirements of N57N and N57Z units.

Expanding the BMW intake system – related components

If you are planning a comprehensive repair or upgrade of your BMW's engine area and need other components from the same group, such as additional intake ducts, flexible hoses, or rigid air pipes, check out the available parts in the BMW Hoses, pipes and tubes category.

For drivers interested in improving driving comfort and overall vehicle functionality during major service work, an interesting supplement to your knowledge might be an article on changing interior equipment – more information can be found in the material Interior metamorphosis: how branded seats from dismantling affect comfort and car value.