BMW F30 330e Hybrid Electrical Brake Booster Servo Vacuum Pump Unit 6851289

Visual condition of the part

The product shows signs of use visible in the photos.

BMW F30 330e Hybrid Electrical Brake Booster Servo Vacuum Pump Unit is a specialized brake system component designed for the 330e hybrid version. The offered module from the Brake Booster Pumps category ensures stable vacuum generation for the brake servo in a vehicle where the classic mechanical pump is replaced by an electric solution. It is a practical choice for users looking for an original, used BMW part with maintained functionality.

Specifications and technical data

• SKU: 6851289-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6851289
• Substitutable numbers: 6851289, 34336851289
• Category: Power Steering Pumps

Purpose and role in the brake system

This electric brake booster module is responsible for generating the vacuum necessary for the proper operation of the brake servo in the hybrid BMW 3 Series F30 330e. In a hybrid vehicle, the internal combustion engine does not always run, so an independent electric vacuum pump guarantees a predictable brake pedal response even when driving in electric mode.

Using a dedicated pump in this model translates into:

• more consistent, predictable brake system performance in various driving modes,
• maintaining an adequate level of assistance even when the internal combustion engine is frequently switched off,
• consistency with the factory architecture of the BMW 330e brake system.

Benefits of using an original brake booster pump

The original pump from the Brake Booster Pumps group designed for BMW ensures a perfect fit for the electrical installation, vacuum lines, and vehicle control systems. As a result:

• compatibility with factory controllers and brake system logic is maintained,
• the risk of onboard system errors and warning messages is minimized,
• installation follows a process similar to the factory service procedure.

A used OEM part is a reasonable compromise between cost and quality – it allows you to restore proper brake booster operation without the need to invest in a new component, while maintaining the original design intended by the manufacturer.

Characteristics of the used component

The offered pump is a used item, which means it comes from disassembly and shows signs of wear typical for this class of parts. At the same time, its functionality in terms of vacuum generation and cooperation with the brake servo is preserved. This type of component is particularly useful for:

• repairs after a brake booster system failure,
• comparative diagnostics (swapping the component to verify a fault),
• economical restoration of brake system efficiency in fleet or heavily used vehicles.

Thanks to the preservation of the original mounting design, the pump can in many cases be installed in a plug-and-play manner, using factory mounting points and connectors.

Selection by part numbers and vehicle integration

This element is intended for specific BMW F30 330e Hybrid configurations, so it is crucial to use the OEM part number and interchangeable numbers when selecting. This information is detailed in the technical specifications section and allows you to verify compatibility with your specific vehicle, also using online catalogs or service inquiries.

To better understand the principles of selecting components by catalog numbers and the relationships between different part versions, it is worth reading the guide on fuel supply systems and methods of identifying elements by VIN and OEM numbers: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. Although the description mainly concerns the fuel system, the principles of working with part numbers and their replacements presented there are also helpful when selecting components for other vehicle systems.

Expansion and service of the BMW brake booster system

If you are planning a comprehensive repair or upgrade of the braking zone in your BMW and need other elements from the same group, such as hydraulic pumps, lines, or additional booster modules, check the available parts in the BMW Brake Booster Pumps category.

Choosing elements from one consistent product group makes it easier to maintain a uniform service standard and also helps reduce vehicle downtime due to better part fitment and a predictable installation process.