BMW X5 F15 Hybrid 40eX N20 Vacuum Pipe Brake Booster Servo Line Hose 7638502

BMW X5 F15 Hybrid 40eX N20 Vacuum Pipe Brake Booster Servo Line Hose is an original braking system component from the Lines, hoses and pipes group, designed for use with the brake booster in the hybrid version. It ensures stable vacuum delivery for brake assistance, which translates into predictable pedal response and safe deceleration during daily operation.

Specifications and technical data

• SKU: 7638502
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7638502
• Substitutable numbers: 7638502, 11667638502
• Category: Hoses, Lines & Pipes

Application in BMW X5 F15 Hybrid 40eX N20

This vacuum pipe is designed to work with the N20 unit in the hybrid version of the BMW X5 F15, where the braking system must operate reliably during both internal combustion engine operation and electric assist modes. It is responsible for a leak-proof connection between the vacuum source and the brake booster, which is crucial for maintaining stable assistance force.

Thanks to its factory geometry and fitment to original mounting points, the pipe maintains the correct routing in the engine bay, minimizing the risk of chafing, kinking, or improper positioning relative to other components.

Construction and function of the vacuum pipe

The pipe belongs to the group of components responsible for transporting vacuum in the braking system. Its construction is adapted to operate under the variable thermal and pressure conditions typical of a premium SUV engine bay.

• Stable vacuum delivery to the brake booster.
• Perfect fit for factory connectors and brackets in the BMW X5 F15 Hybrid.
• Appropriate stiffness and flexibility to reduce the risk of micro-cracks.
• Compatibility with the braking system based on the N20 unit.

A pipe configured in this way helps maintain consistent brake pedal characteristics, which is particularly important during dynamic driving and in emergency braking situations.

Benefits of using an original BMW pipe

Choosing an original vacuum pipe for the BMW X5 F15 Hybrid 40eX N20 braking system provides a number of practical operational benefits:

• Factory fitment – the pipe is prepared for installation at existing mounting points, without the need for any modifications.
• Braking system consistency – maintaining brake booster performance parameters in accordance with the manufacturer's specifications.
• Reduced risk of leaks – proper selection of diameters and connection shapes reduces the probability of vacuum loss.
• Stable braking characteristics – predictable brake pedal response across a wide range of loads and temperatures.

An element from this group is particularly important in hybrid vehicles, where the braking system interacts with recuperation systems and advanced control electronics.

Condition, verification, and part selection

The offered pipe is a used component, which in practice means it has been removed from a vehicle and is intended for further use after proper installation. This type of part allows for an economical repair of the braking system while maintaining the original manufacturer's specifications.

Before purchasing, it is worth verifying compatibility with your specific BMW X5 F15 Hybrid 40eX N20, especially regarding the engine version and braking system configuration. If in doubt, it is helpful to compare the shape, length, and type of connections with the currently installed pipe.

System expansion – other BMW lines, hoses, and pipes

If you are planning a comprehensive repair or upgrade of the braking zone in your BMW and need other components from the same group, such as vacuum lines, supply hoses, or fluid pipes, check out the available parts in the BMW lines, hoses and pipes category.

If you are interested in the topic of safely increasing performance and the informed selection of used components, it is worth reading our guide article: 2.5 TFSI DAZA – how to safely increase the power of an Audi RS3 when buying used turbochargers, which shows what to look for when purchasing parts from the secondary market.