BMW N57 258 HP Turbo Inlet – High-Flow Intake Upgrade for Maximum Air Supply

Our high-flow turbo inlet for 258 HP BMW N57 diesel engines was developed to specifically optimize the air ducting between the intake system and the turbocharger. The aerodynamically optimized design directs air more efficiently to the compressor, which can improve the engine's air supply.

While the series component is primarily designed for comfort, manufacturing specifications, and noise behavior, our turbo inlet pursues a consistently performance-oriented approach. The optimized geometry reduces flow-related losses and creates ideal conditions for vehicles with increased air demand.

Advantages

• up to 19 HP more power
• up to 27 Nm more torque
• improved response
• relief of the axial turbine geometry
• homogeneous and low-swirl flow to the turbocharger
• Plug-&-Play installation
• High-quality manufacturing from PA12
• High temperature resistance
• Oil and fuel resistant

Proven performance increase on the test bench

The flow-optimized design of our turbo inlet directly affects the turbocharger's air supply. Performance increases of up to 19 HP and torque increases of up to 27 Nm were documented during comparative measurements on the dynamometer at AS Performance.

Furthermore, an improved response was observed, especially during load changes and in the lower speed range. The more homogeneous flow to the compressor supports more efficient turbocharger operation and contributes to faster air mass and boost pressure buildup.

Flow-optimized design

Development was carried out taking into account modern flow analyses and practical test conditions. The aim was to guide the airflow through the intake tract as controlled as possible and to optimize critical areas within the series geometry.

The result is a design that directs the airflow more uniformly to the compressor, thus creating ideal conditions for efficient charging.

High-quality manufacturing from PA12

The turbo inlet is manufactured using high-resolution industrial 3D printing from PA12. This material offers high temperature resistance as well as excellent resistance to oil, fuel vapors, and the stresses in the engine compartment.

The robust construction ensures high dimensional stability with low weight and is ideal for long-term use in performance-oriented vehicles.

Installation

Installation is plug & play at the original mounting and connection points of the vehicle. All relevant geometries have been matched to the OEM interfaces, so no adjustments are necessary.

Scope of delivery

• 1x Turbo Inlet for BMW N57 258 HP

Delivery time

Our products are usually ready for shipment within 2-3 business days, provided they are in stock.

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

Suitable for

BMW 3 Series

330d (258 HP)

• F30 330d Sedan
• F31 330d Touring
• F34 330d Gran Turismo

BMW 4 Series

430d (258 HP)

• F32 430d Coupé
• F33 430d Cabrio
• F36 430d Gran Coupé

BMW 5 Series

530d (258 HP)

• F10 530d Sedan
• F11 530d Touring
• F07 530d Gran Turismo

BMW X3

X3 30d

• F25 X3 xDrive30d

BMW X4

X4 30d

• F26 X4 xDrive30d

Important note

This turbo inlet is exclusively for N57 engines of the 258 HP version.

Not suitable for earlier N57 variants with 245 HP. We offer a separate turbo inlet for these vehicles.