BMW F10 F20 F30 LCI Intake Inlet Manifold Engine System With Flaps B47 8513655

The BMW F10 F20 F30 LCI Intake Manifold with Swirl Flaps B47 is an original part from the Intake Manifolds group, designed for BMW diesel engines from the B47 family in post-facelift (LCI) versions. A used manifold with swirl flaps allows for the preservation of the engine's factory operating characteristics, ensuring stable cylinder filling and proper cooperation with the ancillary components.

Specifications and technical data

• SKU: 8513655-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8513655
• Substitutable numbers: 11618513655, 8513655, 11618580274, 8580274
• Category: Intake Manifolds

Purpose and Compatibility

The presented intake manifold is dedicated to BMW F-series models such as F10, F20, and F30 in LCI versions with the B47 engine. Using a component from the same design family helps maintain factory airflow parameters, which is important for both performance and the correct operation of the engine control system.

Thanks to the preservation of the original intake port geometry and integrated swirl flaps, the manifold is suitable wherever precise fitment to the cylinder head and ancillaries of the B47 unit is required, without the need for modifications or adaptations.

Construction of the B47 Intake Manifold with Swirl Flaps

The intake manifold with swirl flaps in the B47 engine is responsible for directing air into the cylinders and shaping the airflow depending on load and engine speed. The integrated swirl flaps enable dynamic flow changes, which supports the combustion process and helps maintain proper exhaust emission parameters.

The factory design of the manifold ensures:

• appropriately selected length and cross-section of the intake ports,
• installation of swirl flaps in each port,
• compatibility with the standard ancillaries of the B47 engine.

Benefits of Using an Original Intake Manifold

Using an original intake manifold with swirl flaps in the B47 engine allows for predictable engine behavior. Factory fitment reduces the risk of intake system leaks, ECU adaptation issues, or incorrect swirl flap operation.

Key benefits include:

• compatibility with factory ECU software – no need to modify injection and boost maps,
• maintenance of the stock torque curve across the entire RPM range,
• easier diagnostics – manifold operating parameters are known to BMW service systems.

Application in Service and Upgrades

A used intake manifold with swirl flaps for the B47 engine is suitable for both replacement during intake system repairs and for restoring the factory configuration after previous modifications. The original design facilitates installation in place of a worn or damaged manifold, without interfering with the cylinder head or ancillaries.

If you are planning a comprehensive engine area repair or upgrade for your BMW and need other parts from the same group, such as intake manifolds, intake port components, or intake system housings, check the available parts in the BMW Intake Manifolds category.

More About Intake and Exhaust Systems

When working on the intake manifold, it's worth looking more broadly at the entire airflow and exhaust path in the car. A well-chosen intake manifold, combined with a properly configured exhaust system, affects engine smoothness, throttle response, and component durability.

To better understand the relationships between the manifold, turbocharger, and exhaust system, and to get practical tips on selecting used parts, it's worth reading the article: Performance Exhaust Systems: Used Manifolds and Sport Catalytic Converters on the Road.