Vacuum Pipe BMW F40 F44 F45 F46 X1 F48 X2 F39 Brake Booster Line Hose 5A01FC4

The Vacuum Pipe BMW F40 F44 F45 F46 X1 F48 X2 F39 Brake Booster Line Hose is an original vacuum hose for the brake system, designed for BMW F and X series models. This component is responsible for the stable supply of vacuum to the brake booster, which translates to predictable brake pedal operation and safe deceleration. Thanks to its factory geometry and connectors, the hose ensures a secure fit with the original BMW braking system.

Specifications and technical data

• SKU: RHD-5A01FC4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A01FC4
• Substitutable numbers: 5A01FC4, 5A0 1FC 4
• Category: Brake Hoses, Lines & Fittings

Purpose and Function in the Braking System

The presented vacuum hose is part of the Brake Hoses, Lines, and Connectors group, responsible for transporting vacuum between the pump and the brake booster. In BMW F and X series vehicles for which it is intended, its proper operation influences:

• stable brake assist force across the full range of engine loads,
• consistent brake pedal feel in daily use,
• reduction of braking efficiency drops resulting from vacuum system leaks.

A properly selected vacuum hose minimizes the risk of micro-leaks, which can cause extended braking distances or unstable booster operation.

Construction and Fitment for BMW Models

The hose is designed as an OEM part for specific generations of BMW F40, F44, F45, F46, X1 F48, and X2 F39. This means its shape, connection diameters, and connector types are adapted to the factory routing in the engine bay. As a result:

• installation is done using existing mounting points without the need for modifications,
• the correct hose routing is maintained, reducing the risk of chafing and overheating,
• connectors work with original brake and vacuum system spigots.

This solution helps maintain the structural integrity of the braking system and facilitates future servicing.

Characteristics of a Used Component

The offered hose is a used part, meaning it comes from a dismantled vehicle and has been verified for its suitability for further use. For vacuum hoses, it is crucial to maintain:

• the structural integrity of the hose without cracks or delamination,
• sealing along its entire length,
• the condition of the connectors, allowing for a secure fit on the spigots.

Choosing an original, used hose for BMW allows for maintaining the factory parameters of the braking system's operation while optimizing repair costs.

Benefits of Using an Original Vacuum Hose

Using a vacuum hose dedicated to specific BMW models offers a range of practical benefits:

• Factory Fitment – no need to adapt universal hoses or additional connectors.
• Stable Brake Assist – proper vacuum flow supports consistent operation of the brake booster.
• Hassle-Free Installation – the hose works with original brackets and guides in the engine bay.
• Compatibility with Other Brake System Components – construction aligned with the vehicle manufacturer's design.

For users who service their braking system consciously, choosing an original vacuum hose is a sensible compromise between quality and repair cost.

Assistance with Selection and Additional Materials

When selecting used brake system components – including vacuum hoses, calipers, discs, or ABS components – it is advisable to follow proven verification procedures. A detailed list of steps to consider when purchasing such parts can be found in the article Used Brake System: How to Safely Choose Discs, Calipers, and ABS?, which discusses the practical aspects of safely choosing used components.

If you are planning a comprehensive repair or upgrade of the braking area in your BMW and need other parts from the same group, such as flexible hoses, rigid pipes, or booster connectors, check the available parts in the BMW Brake Hoses, Lines, and Connectors category.