BMW 2 Series F45 F46 Brake Brakes Master Cylinder Servo Booster Unit 6872077

The BMW 2 Series F45/F46 Brake Booster – Servo, Master Cylinder, and Booster Unit is a complete assembly designed for the braking system of BMW 2 Series F45 and F46 models. The offered component is a used part from a dismantled vehicle, allowing for the combination of original BMW quality with an attractive price and preserved factory operating parameters. This is a solution for users who expect reliable brake system performance without compromising on fitment.

Specifications and technical data

• SKU: rhd-6873432
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6873432
• Substitutable numbers: 34336873432, 6873432, 34336864669, 6864669, 34336866164, 6866164, 6872077, KZ
• Category: Brake Servos

Purpose and Function in the Braking System

The presented servo and brake force regulator unit is responsible for proper assistance of the brake pedal force and stable operation of the entire system. Using an original BMW component ensures:

• correct brake assist characteristics,
• appropriate distribution of braking force to the vehicle's axles,
• compatibility with the factory ABS/ESP configuration.

This provides the driver with predictable brake pedal response and consistent, safe vehicle behavior under various road conditions.

Compatibility and Fitment for BMW 2 Series F45/F46

The servo and brake force regulator unit has been specifically designed for the BMW 2 Series F45/F46 platform. This means that:

• mounting geometry is adapted to factory points on the body,
• connections to the brake pedal and lines are compatible with the original system,
• the system works seamlessly with the vehicle's factory electronics.

The presence of dedicated part numbers and interchangeable numbers in the technical specifications facilitates the selection of the correct component for a specific vehicle configuration, including comparisons with factory-installed parts.

Benefits of Using an Original BMW Servo and Brake Force Regulator

Choosing an original BMW brake booster unit offers a range of practical advantages:

• Factory Fitment – no need for modifications, drilling, or adapter brackets.
• Consistent Performance Characteristics – maintains the same brake pedal "feel" as in the factory configuration.
• Compatibility with Safety Systems – correct cooperation with ABS, traction control, and stability control.
• Time Savings During Installation – the mechanic receives a component ready for installation in place of the worn unit.

This is particularly important for vehicles where predictable braking behavior is a priority, both in daily city driving and on longer journeys.

Condition, Origin, and Operation of a Used Part

The offered servo and brake force regulator unit is a used part, sourced from a dismantled vehicle. This type of component significantly reduces repair costs compared to a new component, while maintaining original construction and operating parameters. It is a sensible choice for users who want to keep their car in good technical condition while controlling their service budget.

To maximize the potential of a dismantled part, it is advisable to follow appropriate installation procedures, regularly inspect the braking system, and maintain the brake fluid. Practical tips on operation and maintenance can be found in the article: How to Extend the Lifespan of Used Car Parts in Your BMW.

Why Choose an Original BMW Servo and Brake Force Regulator

By choosing an original BMW servo and brake force regulator, you are investing in a component that has been precisely designed for your specific vehicle model and generation. This translates to:

• stable, predictable braking across the full range of loads,
• maintenance of factory safety standards,
• easier diagnostics and future servicing.

For drivers who value the technical integrity of their vehicle and want to avoid problems associated with non-original aftermarket parts, this choice is a practical and long-term cost-effective solution.