BMW Mini One R50 R52 Brake Servo Unit Master Cylinder Expansion Tank 6778723

The Mini One R50 R52 Brake Servo Master Cylinder is an original brake system component from the Servos and Brake Force Correctors category, designed for Mini One R50/R52 generation models. It provides stable braking assistance, improving pedal feel and brake force modulation precision. This is a solution for users seeking OEM parts with a proven design, matched to the car's factory specifications.

Specifications and technical data

• SKU: 6778723
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 6779679
• Substitutable numbers: 34336779679, 6779679, 34336759114, 6759114, 34336757324, 6757324, 34336785667, 6785667, 6778723, 34336756235, 6756235, 34316779677, 6779677, 34316758226, 6758226, 31116869546, 6869546
• Category: Brake Servos

Purpose and Role in the Braking System

The brake servo in the Mini One R50/R52 is responsible for assisting the force applied to the brake pedal, using vacuum to reduce the driver's effort. A correctly selected component of this class ensures:

• more predictable braking system response,
• stable pressure in the brake circuits,
• comfortable pedal operation in city and highway driving.

By maintaining the factory operating characteristics, the braking system retains parameters close to the original manufacturer's configuration.

Design and Fitment for Mini

The offered brake servo comes from the Mini OE line, signifying compliance with factory quality and installation standards. The component has been specifically designed for the engine bay and braking system geometry of the Mini One R50/R52, which translates to:

• secure mounting to the bulkhead and correct positioning relative to the brake master cylinder,
• proper guidance of the brake pedal linkage,
• compatibility with the factory vacuum system.

This ensures the servo works with other components without requiring modifications, maintaining the integrity of the entire system.

Performance Characteristics and Installation Benefits

The servo in this series is designed to provide consistent braking assistance under typical Mini One operating conditions. In practice, this means:

• a more linear brake pedal response,
• reduced force required for effective braking,
• better vehicle control during rapid deceleration.

As a component from the Servos and Brake Force Correctors category, this part is a crucial element of active vehicle safety, influencing the effectiveness of the entire braking system.

Part Condition and Service Application

The offered brake servo master cylinder is a used part, making it an attractive cost-effective alternative while retaining the original OEM design. This type of component is suitable for:

• post-accident repairs,
• routine maintenance of older Mini One R50/R52 models,
• restoring brake system functionality in fleet or private vehicles.

Choosing a used OEM part allows for system consistency and avoids fitting issues typical of aftermarket replacements with uncertain specifications.

Technical Support and Used Part Maintenance

When installing the brake servo master cylinder, it is advisable to check the condition of cooperating brake system components and follow bleeding procedures. For users interested in longer and trouble-free operation of salvaged components, the guide how to extend the lifespan of used car parts will be useful, describing practical principles of component maintenance and inspection.