BMW F10 F11 F13 F01 Brake Servo Fluid Expansion Tank Bottle Reservoir 6782289

BMW F10 F11 F13 F01 Brake Servo Fluid Expansion Tank Bottle Reservoir is an original brake booster system component designed for BMW 5 and 7 Series models. Thanks to its factory design, it ensures consistent operation of the master cylinder, fluid reservoir, and brake servo, which translates into stable and predictable braking. This solution is particularly attractive for workshops and users who value compatibility with the factory braking system and guaranteed fitment for a specific BMW generation.

Specifications and technical data

• SKU: 6782289
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6782289
• Substitutable numbers: 6782289, 34336782289
• Category: Brake Servos

Purpose and function in the BMW braking system

The presented master cylinder, brake fluid reservoir, and servo assembly is a component in the Brake Servos and Proportioning Valves category, responsible for properly amplifying the force applied to the brake pedal. In BMW F10, F11, F13, and F01 series vehicles, it is responsible for:

• transferring force from the brake pedal to the hydraulic system,
• stabilizing brake fluid pressure in the circuits,
• cooperating with safety systems such as ABS or traction control,
• maintaining the correct fluid level in the integrated reservoir.

As a result, the driver receives clear pedal feedback and repeatable braking system response in daily operation.

Advantages of using an original BMW component

Using an original master cylinder–reservoir–servo assembly in a BMW provides a number of practical installation and operational benefits:

• Factory fitment – maintaining the correct geometry of mounts and connections to the brake pedal and hydraulic lines.
• Consistent operation with vehicle electronics – the braking system maintains the parameters specified by the manufacturer.
• Reduced risk of bleeding issues and leaks due to a design consistent with the original project.
• Simplified diagnostics – operating parameters correspond to factory values, which simplifies service testing.

For workshops, this means shorter installation time and fewer potential corrections, and for the user – stable braking system performance under typical road conditions.

Characteristics of the used component

The offered assembly comes from a used vehicle, which allows for an economical replacement of the subassembly while maintaining the original BMW specification. A used component of this class is a popular choice in situations where:

• a quick replacement of a damaged servo or master cylinder is necessary,
• compatibility with the factory system is important without the cost of new parts,
• the vehicle is used intensively and the priority is functionality and fitment.

Before installation, a standard service procedure is recommended: checking for leaks, inspecting the condition of ports and lines, and replacing the brake fluid in accordance with the vehicle manufacturer's recommendations.

Integration with the braking system and part selection

Due to the complex construction of the BMW braking system, the selection of the correct master cylinder, reservoir, and servo assembly should be based on vehicle data as well as OEM part numbers and interchangeable numbers. This helps avoid installation problems and ensures proper cooperation with other system components.

If you are planning a comprehensive repair or upgrade of the braking area in your BMW and need other elements from the same group, such as servos, proportioning valves, or complete booster modules, check the available parts in the BMW Brake Servos and Proportioning Valves category.

Expert support and safe online shopping

When selecting used components for the braking system and other vehicle systems, it is worth using reliable sources of knowledge. For elements affecting driving comfort, such as air conditioning or heating, the following guide will be helpful: Air conditioning and heating – part selection and maintenance for year-round comfort, which shows how to consciously choose used OEM components and plan service.

If you want to organize the process of purchasing second-hand parts – from verifying the seller, through checking OEM numbers, to assessing the condition of the element – use this practical guide: Safe online purchase of used car parts – a step-by-step guide. This is a good supplement to your knowledge when choosing elements such as master cylinders, servos, or proportioning valves.