Vacuum Pipe BMW X5 E70 LCI X6 E71 X5 F15 X6 F16 Power Brake Servo Unit 8508018

The BMW X5/X6 Brake Booster Vacuum Hose is an original brake system component designed for BMW X5 E70 LCI, X6 E71, X5 F15, and X6 F16 models. It ensures a stable vacuum supply to the brake booster, which translates to proper braking assistance and predictable brake pedal feel. As part of the Brake Hoses, Lines, and Connectors group, it is a crucial safety element for daily vehicle operation.

Specifications and technical data

• SKU: 8508018
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8508018
• Substitutable numbers: 8508018, 11668508018
• Category: Brake Hoses, Lines & Fittings

Purpose and Function in the Braking System

The offered brake booster vacuum hose has been specifically designed for the BMW X5 and X6 vehicles mentioned in the product title. Its function is to stably transfer vacuum from the intake system to the brake booster, enabling effective assistance for the force applied to the brake pedal.

A correctly functioning vacuum hose contributes to:

• uniform brake booster operation,
• consistent brake pedal feel,
• maintaining the proper level of assistance across the entire engine load range.

Original Origin and BMW Fitment

This component comes from the BMW OE line, meaning it is factory-fitted to the engine bay structure and braking system of the specified models. Original manufacturing ensures:

• correct hose routing relative to factory mounting points and brackets,
• appropriate diameter and shape of connection ends,
• easier installation without the need for system modifications.

Consequently, the hose can be used both as a replacement for a damaged part and as a component replaced preventatively during work on the braking or intake system.

Characteristics of the Used Component

The brake booster vacuum hose is offered in used condition, allowing for an economical restoration of the braking system's functionality while maintaining original BMW specifications. This type of component, when operated correctly, retains its working properties for a long time, making a functional salvaged part a sensible choice for budget-conscious repairs.

Replacing the hose is particularly recommended when symptoms such as:

• a hard brake pedal with the engine running,
• irregular braking assistance,
• suspected leaks in the vacuum circuit.

Integration with the Braking System and Diagnostics

As a part of the Brake Hoses, Lines, and Connectors group, the vacuum hose works directly with the brake booster and the engine's intake system. When diagnosing braking issues, it is advisable to inspect this hose for:

• seal integrity at the connections,
• any cracks or abrasions along the hose length,
• correct routing relative to engine bay components.

Choosing an original hose dedicated to specific generations of BMW X5 and X6 minimizes the risk of installation errors and compatibility issues.

Braking System Expansion and Part Selection

If you are planning a comprehensive repair or upgrade of the braking area in your BMW and require other components 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.

To better plan your repair budget and make informed choices when selecting used brake system components, we recommend reading the guide on our blog: Brake Calipers Under the Microscope: How to Effectively Reduce Repair Costs by Choosing Proven Salvaged Parts. You will find practical tips there on the safe use of original salvaged parts.