Hydro Braking Pump BMW F20 F21 F30 F31 ABS DSC Unit 6857323 6857324

BMW F20 F21 F30 F31 ABS DSC Brake Booster Pump 6857323 6857324 is an original part from the ABS and ESP System category, designed for advanced control of stability and braking force in selected BMW 1 and 3 Series models. This is a complete pump with a control module, which allows for the restoration of full ABS/DSC system functionality and maintains predictable, safe vehicle behavior in critical road situations.

Specifications and technical data

• SKU: 6862250
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6862250
• Substitutable numbers: 34516862250, 6862250, 345167938463451679394434516791724, 679384667939446791724, 6857323, 6857324, 34516857323, 34512460453, 2460453, 34516793944, 6793944, 34516793846, 6793846, 34516791724, 6791724
• Category: ABS & Stability Hydraulic Units

Application and Function in BMW ABS/DSC System

The presented ABS DSC brake booster pump is the central hydraulic-electronic component responsible for precise pressure modulation in the brake circuits and cooperation with the vehicle's stability control system. In practice, this means:

• active pressure regulation in the brake lines during sudden braking,
• cooperation with wheel speed sensors and a yaw rate sensor,
• support for the traction control and stability control system,
• wheel slip limitation when starting off and braking on slippery surfaces.

Thanks to this, the ABS and DSC system in BMW F20, F21, F30, and F31 series can operate in a repeatable and predictable manner, which translates to stable handling and better vehicle control in emergency situations.

Original Origin and Interchangeable Numbers

The pump comes from the BMW OE line, which means factory fit for the electrical and hydraulic installation and compatibility with the control unit software in these models. The part has a dedicated OEM part number and a set of interchangeable numbers, which facilitates unambiguous identification and selection for a specific vehicle configuration.

The presence of reference numbers makes it possible to check compatibility with a specific year and engine version of BMW, as well as to verify compliance with the ABS/DSC system installed in the car. This is particularly important when replacing modules in modern vehicles, where differences in software and configuration can be significant.

Condition, Installation, and Service Aspects

The item is offered in used condition, allowing for economical repair of the braking system while maintaining the original manufacturer's specifications. Before installation, the standard service procedure is recommended, including:

• checking the tightness of hydraulic connections,
• inspecting electrical connectors for corrosion and mechanical damage,
• bleeding the brake system after installation,
• adapting or coding the module in the vehicle using appropriate BMW diagnostic software.

This approach minimizes the risk of errors in the ABS/DSC system operation and ensures proper cooperation of the pump with other control units in the vehicle.

Benefits of Using an Original ABS/DSC Pump

Using an original ABS DSC pump in BMW F20, F21, F30, and F31 series brings a number of practical benefits:

• Factory Fit – no need for installation modifications, compatibility with the wiring harness and brake lines.
• Consistent Operation of Safety Systems – correct functioning of ABS, DSC, and traction control across the full speed range.
• Stable Vehicle Behavior – predictable vehicle reactions during emergency braking and evasive maneuvers.
• Economical Repair – a used OEM part allows for lower service costs compared to a new part, while maintaining original construction.

BMW ABS and ESP System – Parts Selection and Practical Knowledge

When planning repairs to the ABS and ESP system in a BMW, it is worth paying attention to the compatibility of the installed pump with the OEM part number and interchangeable numbers assigned to the specific model. This helps to avoid problems with control unit communication, fault memory errors, and incorrect operation of driver assistance systems.

If you are interested in other parts from the BMW ABS and ESP System category, check out the BMW ABS and ESP System available in our store to select compatible components for your car.

More on how to wisely use used components in premium cars can be found in our guide: Audi on Second-Hand Parts – Tuning and Repairs Without Quality Loss, where we discuss a practical approach to selecting and installing used components in German brand vehicles.