BMW N47 Turbo Inlet – Bionically optimized high-flow inlet for 16d, 18d & 20d models

Our high-flow turbo inlet for BMW N47 diesel engines has been developed to specifically optimize the airflow between the intake system and the turbocharger. By utilizing modern CFD flow simulations and a bionically optimized internal geometry, flow-related losses have been significantly reduced compared to the standard intake system.

The optimized airflow ensures a more homogeneous flow to the turbocharger, reduces turbulence in the intake tract, and creates the foundation for more efficient air throughput. The improved flow characteristics prove particularly beneficial in performance-tuned vehicles and when there is an increased air demand.

In addition, the standard resonance chamber of the air filter box is deactivated. We supply a custom-fit sealing cover for this purpose, which further optimizes the air path and provides an additional reduction in pressure loss.

Advantages at a glance

• Bionically flow-optimized design
• Reduced pressure losses in the intake system
• Optimized airflow to the turbocharger
• More homogeneous flow to the compressor wheel
• Improved load response and responsiveness
• Faster boost pressure build-up
• Optimized air supply for increased air demand
• Resonance chamber delete including sealing cover
• High-quality PU molded hose with Shore hardness A65
• Industrial PA12 manufacturing using 3D printing
• High temperature resistance
• Oil, fuel, and chemical resistance
• Plug-&-Play installation

Bionic flow optimization

During the development of our turbo inlet, the focus was on flow quality within the intake tract. With the help of modern CFD simulations, critical areas of the OEM component were analyzed and specifically optimized.

The bionically inspired geometry is based on natural flow shapes and allows for more controlled airflow to the turbocharger. As a result, turbulence is reduced and air mass is fed to the compressor more evenly.

Optimized air supply to the turbocharger

An efficient air supply is the foundation for high-performance turbocharging. Thanks to the revised geometry, the airflow is guided to the turbocharger with lower losses and the flow conditions within the intake tract are improved.

This can be particularly noticeable in the lower and mid-rpm range through more direct responsiveness and faster boost pressure build-up.

Resonance chamber delete included

The scope of delivery includes a matching sealing cover to deactivate the standard resonance chamber in the air filter box.

By eliminating this additional resonance volume, the airflow is simplified and the intake tract is further optimized. At the same time, a more direct intake characteristic is created.

High-quality manufacturing from PA12 and PU

The turbo inlet consists of a high-strength PA12 hard component, which is manufactured using an industrial 3D printing process. The system is complemented by a specially produced PU molded hose with a Shore hardness of A65.

This material combination ensures high dimensional stability, temperature resistance, and a long service life, even under demanding operating conditions.

Plug-&-Play installation

All connections and mounting points correspond to the OEM specifications of the BMW N47 engines. Installation requires no adjustments and can be carried out directly at the original connection points.

Scope of delivery

• 1x Turbo inlet hard component made of PA12
• 1x Turbo inlet molded hose made of PU (Shore hardness A65)
• 1x Set of stainless steel clamps
• 1x Resonance chamber delete kit including sealing cover

Delivery time

Our products are usually ready for shipment within 2–3 working days, provided there is stock available.

Should an item not be available due to high demand or supply bottlenecks, it will be manufactured using the high-quality PA12 3D printing process. In this case, the delivery time is up to 3 weeks.

Suitable for

BMW 1 Series

N47

• F20 116d
• F20 118d
• F20 120d
• F21 116d
• F21 118d
• F21 120d

BMW 2 Series

N47

• F22 218d
• F22 220d
• F23 218d
• F23 220d

BMW 3 Series

N47

• F30 316d
• F30 318d
• F30 320d
• F31 316d
• F31 318d
• F31 320d
• F34 318d
• F34 320d

BMW 4 Series

N47

• F32 418d
• F32 420d
• F33 420d
• F36 418d
• F36 420d

Important note

Not suitable for vehicles with N47 25d engines (225d, 325d, 425d, 525d, and other 25d models).

We offer a separate turbo inlet for the 25d engines with a different charging configuration.