Ford Focus ST Mk3 Brake Vacuum Pump Unit 2.0 Ecoboost BB5E-2A451-BD

Ford Focus ST Mk3 Brake Vacuum Pump Unit 2.0 Ecoboost is an original brake system component designed for the petrol engines of this sports model. It ensures stable generation of the vacuum required for the proper operation of the brake booster, which translates into predictable and repeatable brake pedal performance. Thanks to its OEM design, this is a part precisely matched to Ford specifications, allowing for a technically correct system repair.

Specifications and technical data

• SKU: 5235113
• Mark: Ford
• Condition: Used
• OEM Part Number: 5235113
• Substitutable numbers: 5235113, BB5E-2A451-BD, BB5E2A451BD
• Fuel type: Petrol
• Part type: Vacuum Pump
• Category: Vacuum Pumps

Purpose and function in the brake system

The presented vacuum pump has been designed to work with the 2.0 EcoBoost petrol unit in the Ford Focus ST Mk3 model. Its task is to generate the appropriate level of vacuum for the brake booster, which enables the correct level of assistance force with every press of the brake pedal. Stable pump operation translates into:

• repeatable brake system response across the entire engine load range,
• more predictable braking force modulation,
• maintaining brake characteristics consistent with Ford's factory standards.

OEM construction and fitment for Ford Focus ST Mk3

As an element from the Vacuum pumps group, this unit has been constructed in accordance with the vehicle manufacturer's requirements, which ensures proper mounting points and compatibility with factory vacuum lines. This means that installation takes place in the location intended by the engine design, without the need for modifications or adaptations. Original manufacturing helps maintain:

• correct routing of lines and connectors in the engine bay,
• vacuum system integrity under high temperature and load conditions,
• operating parameters consistent with factory engine control unit calibration.

Operating characteristics in a petrol engine

The pump is intended for use with a petrol engine, where vacuum generation conditions differ from those in diesel units. The applied design ensures adequate performance across the full rev range, including during the dynamic driving typical of the ST version. Selecting the correct vacuum pump for a specific engine configuration is crucial for:

• maintaining stable brake assistance during rapid acceleration,
• limiting vacuum drops under high engine load,
• maintaining the safety and repeatability of the brake system operation.

Condition, origin, and service application

The offered vacuum pump is a used component, sourced from dismantling, which allows for an economical brake system repair while maintaining original Ford specifications. This type of part is suitable both for standard replacement of a worn pump and for repairs following a vacuum system failure, when restoring factory operating parameters is required. Choosing an original vacuum pump from dismantling is particularly beneficial when you want to:

• maintain compliance with the factory brake system design,
• avoid issues with aftermarket part fitment,
• rationally combine OEM quality with service cost control.

Support with selection and additional technical materials

To correctly select engine supply and assistance system components for a specific vehicle configuration, it is worth using knowledge about part numbers and diagnostic principles. A detailed discussion on how to identify components by manufacturer markings, as well as practical service tips, can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which organizes key technical information in one place. If you are planning a comprehensive repair or upgrade of the brake system area in your Ford and need other elements from the same group, such as vacuum pumps, vacuum lines, or vacuum control elements, check the available parts in the Ford Vacuum pumps category.