BMW E90 LCI F20 F21 F30 F31 Inlet Intake Manifold Without Flap N47N 8506406

BMW E90 LCI F20 F21 F30 F31 N47N Intake Manifold is an original part from the intake manifolds category, designed for modern BMW diesel engines from the N47N family. A used BMW intake manifold is a solution for drivers who want to restore proper engine operation while maintaining factory airflow parameters and robust build quality. By using an OEM part, the correct geometry of the intake ports and compatibility with engine accessories are preserved.

Specifications and technical data

• SKU: 8506406
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8506406
• Substitutable numbers: 8506406, 11618506406
• Category: Intake Manifolds

Intended Use and Compatibility with N47N Engine

The presented intake manifold is designed to work with the N47N unit used in popular BMW 1 Series, 3 Series, and related models. The manifold's design is adapted to the airflow characteristics of a diesel engine, ensuring stable idling, proper throttle response, and correct combustion conditions across the entire RPM range.

Thanks to its factory design, the manifold is compatible with standard engine accessories, sensors, and control systems, which simplifies installation and reduces the risk of fitting issues. This is particularly important for modern engines where intake geometry directly impacts performance and running smoothness.

Construction and Technical Properties of the Intake Manifold

The BMW intake manifold is manufactured using OEM technology, with materials selected for their resistance to temperature, vibrations, and contaminants present in a diesel engine's intake system. The design of the intake ports is optimized for even air distribution to individual cylinders, promoting stable engine operation.

The arrangement of ports, mounting points, and connection points is in accordance with BMW's factory standard, allowing for:

• maintaining the original routing of cables and wiring harnesses,
• correct seating of the manifold on the engine head,
• compatibility with original intake system components.

This solution simplifies servicing and reduces replacement time, while also preserving the engine's factory performance characteristics.

Benefits of Using an Original BMW Intake Manifold

Using an original intake manifold to replace a worn or damaged part restores proper airflow in the intake system. This is crucial for both performance and the longevity of the engine. A used OEM part ensures:

• factory fitment to the engine head and accessories,
• consistency with the engine control unit software,
• preservation of standard operating parameters without the need for modifications.

For many users, this represents a sensible compromise between cost and quality – especially for modern diesels where the intake system is key to the overall proper functioning of the engine.

Condition, Verification, and Practical Application

The offered manifold is a used part, which helps reduce repair costs while maintaining the original manufacturer's specifications. This type of part is often chosen for:

• repairs after an intake system failure,
• restoring a car to factory condition after unsuccessful modifications,
• servicing engines used in demanding conditions.

Before installation, a standard check of its seal, mating surface condition, and cooperating components is recommended, in accordance with BMW service procedures. A correctly selected and installed intake manifold supports stable operation of the N47N unit and helps maintain proper performance parameters.

More About Manifolds and Systems in BMW

If you are looking for additional information on how to choose used intake and exhaust components for premium cars, it is worth reading the guide on our blog – performance exhaust systems and used manifolds in BMW, Mercedes, Audi, VW, and Mini, where we discuss practical aspects of purchasing and operating such components.

If you also need other BMW intake manifolds for various models of this brand, check out our dedicated offer: BMW intake manifolds.