BMW F20 F30 F32 B47 Diesel Turbo Air Duct Intake Charge Line Hose 8578651

The BMW F20 F30 F32 B47 Diesel Intake Air Hose is a component of the intake system designed for B47 diesel engines used in popular 1, 3 and 4 Series models. This part belongs to the turbocharger and associated components category, responsible for the stable air flow to the supercharged diesel engine.

Specifications and technical data

• SKU: 8578651
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8578651
• Substitutable numbers: 13718578651, 8578651
• Fuel type: Diesel
• Category: Turbos & Parts

Purpose and function in the intake system

The intake air duct in this model is responsible for ensuring a tight and as laminar air supply as possible to the B47 engine's supercharger system. A properly selected duct reduces pressure drops, stabilizes flow, and supports the turbocharger's efficient operation, which translates into smooth engine operation and consistent performance.

The component is structurally related to the turbocharger and parts category, so its condition directly impacts turbine load, throttle response, and the accuracy of intake system sensor readings. Proper hose selection minimizes the risk of leaks, power loss, and engine control unit errors.

Technical characteristics and compatibility

This hose is designed for diesel- powered engines, meaning it's adapted to the specific operating conditions of diesel engines – higher boost pressure, greater thermal loads, and system tightness requirements. The intake design was developed for specific BMW F-Series body variants, ensuring proper hose routing within the engine compartment and compatibility with factory mounts.

As an OEM part, the hose is designed to maintain factory airflow parameters, work with the stock turbocharger, and operate with the stock ECU software. This makes it a sensible choice for both standard operation and modifications within factory tolerances.

Brand, origin and condition of the item

The air intake duct is sourced from BMW, maintaining the original geometry, mounting points, and quality standards specified by the vehicle manufacturer. Proper fit with other intake system components reduces stress, duct twisting, and potential micro-cracks during engine operation.

The part is offered in used condition, allowing for cost-effective replacement while maintaining factory specifications. This is a practical solution when the existing hose has been mechanically damaged, deformed, or shows signs of leaks, and maintaining the proper operation of the turbocharger and the entire intake system is a priority.

Benefits of using the original intake in the B47 engine

Using an intake pipe dedicated to the B47 engine in the BMW F20, F30 and F32 brings a number of practical benefits:

• Factory fit – compatible with the original engine compartment geometry and stock mounting points.
• Stable air flow – a hose designed to meet the requirements of a diesel engine with a turbocharger.
• Support for turbine operation – reducing pressure drops and the risk of leaks in critical intake sections.
• Economical repair – a used component allows you to reduce service costs while maintaining parameters close to factory ones.

Other air intakes for BMW turbochargers

If you are looking for other air intakes for BMW turbochargers, check the air intakes for BMW turbochargers available in our store to choose the element perfectly suited to your specific model and engine version.

How to safely buy used intake system components

When choosing a used intake hose, it's worth paying attention to compliance with the manufacturer's markings, fuel category, and type, as well as overall visual condition and absence of visible damage. It's also good practice to periodically inspect the entire intake system—from the air filter to the turbocharger—to detect any leaks before they lead to a loss of power or increased fuel consumption.

You can find more practical tips on how to make an informed choice of aftermarket parts in the guide Used Parts – Your guide to the best offers in the automotive store , which will help you optimize service costs without sacrificing quality.