BMW E87 E90 E91 ABS DSC Module Pump ECU Hydro Unit 6776056 6789300

BMW E87 E90 E91 ABS DSC Module Pump ECU Hydro Unit 6776056 6789300 is an original BMW braking system component, combining hydraulic and electronic control functions for the ABS/DSC system within a single housing. This complete hydro-electronic assembly is designed for precise integration with the vehicle's factory electronics, ensuring stable operation of active safety systems. By using OEM parts, the correct braking system performance characteristics and compatibility with the control software are maintained.

Specifications and technical data

• SKU: 6789300
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6789300
• Substitutable numbers: 34526776056, 6776056, 34516794648, 6794648, 34516779566, 6779566, 34516789300, 6789300
• Category: Other Interior Parts & Accessories

Purpose and Function of the ABS/DSC Module

The presented ABS/DSC module plays a crucial role in managing brake system pressure and implementing driving stability functions. The integrated hydraulic pump, along with the valve block, works with the electronic controller, which adjusts braking force on individual wheels based on sensor signals. In practice, this translates to:

• wheel slip control during sudden braking,
• vehicle stability assistance in corners,
• precise pressure modulation in brake circuits,
• seamless cooperation with other vehicle safety systems.

Thanks to its factory design, the module is optimized for the electrical and hydraulic architecture used in BMW 1 Series (E87), 3 Series (E90), and 3 Series Touring (E91), facilitating its integration with the existing system.

Benefits of Using an Original BMW Module

Using an original ABS/DSC module in a BMW allows for the preservation of performance parameters as intended by the vehicle manufacturer. This means proper operation of driver assistance systems without the need for modifications to wiring harnesses, connectors, or software. The key advantages include:

• Factory Electrical and Hydraulic Compatibility – designed to fit original connectors, hoses, and mounting points in the engine bay.
• Consistency with ABS and DSC system logic – no need for universal solution adaptations.
• Ability to utilize the vehicle's existing controller configuration.

Choosing an original module is particularly important for vehicles where predictable braking system behavior and stable safety system operation are paramount.

Technical Characteristics and Compatibility

The module combines a hydraulic block with a pump and an electronic controller in a single housing, simplifying installation and servicing. The hydro-electronic solution is designed for specific equipment variants and BMW braking system configurations, so it is advisable to verify compatibility with your vehicle before purchasing. Helpful for this are:

• manufacturer markings on the module housing,
• comparison of the electrical connector type and the arrangement of brake line outlets,
• checking compatibility with the service documentation for the specific BMW model.

This ensures that you select a part that matches the factory specification, minimizing the risk of communication issues within the vehicle network and problems with ABS/DSC system operation.

Condition, Installation, and Service Application

The offered module is from the secondary market, which is a cost-effective solution for repairing daily-driven vehicles and maintaining older generation BMWs in full working order. This type of component is particularly useful in situations where symptoms such as:

• ABS/DSC warning lights on the instrument cluster,
• incorrect operation of the driving stability system,
• communication errors with the brake system controller.

Before installation, it is recommended to perform a computer diagnostics check and verify the electrical and hydraulic systems. The replacement itself should be entrusted to a workshop experienced with ABS/DSC systems in BMWs. This allows for proper brake bleeding and potential controller adaptation.

If you are planning a comprehensive repair or upgrade of the braking area in your BMW and need other components from the same group, such as pumps, control modules, or hydraulic blocks, check the available parts in the Other BMW category.

Technical Support and Parts Selection

Selecting the correct ABS/DSC module for a specific BMW model requires considering the vehicle's configuration and the technical solutions employed. If you have doubts regarding the differences between various braking system versions and their impact on vehicle handling, it is worth consulting comparative materials on advanced versions of sports and standard models. An extended discussion on the influence of the braking system and chassis on a car's character can be found in the article Audi RS vs. Other Models – What Lies Under the Hood and Chassis?.

For users who maintain older generation BMWs in good condition and are considering using parts from the secondary market for larger service or modernization projects, a guide describing practical scenarios for refreshing cars from the 1998–2012 period may also be helpful. More information on this topic can be found in the material Second Life for a Youngtimer – How Used Car Parts Revitalize Cars from 1998–2012.