BMW E87 E90 E91 ABS DSC Module Pump ECU Hydro Unit 6776055

The BMW E87 E90 E91 ABS DSC Control Unit Brake Booster is an original brake system component designed for BMW 1 and 3 Series models equipped with ABS and DSC systems. This solution combines the functions of a control unit and a pump, ensuring stable operation of electronic safety systems and predictable vehicle behavior on the road. Thanks to its factory design, the component perfectly integrates with the factory BMW installation, without the need for wiring or hydraulic modifications.

Specifications and technical data

• SKU: 6776055
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6776055
• Substitutable numbers: 34526776056, 6776056, 34516794648, 6794648, 34516779566, 6779566, 34516776055, 6776055
• Category: Other Brake Parts

Purpose and Function in the Braking System

The presented control unit with brake booster is responsible for precise pressure control in the brake circuits and operation of ABS and DSC systems in BMW E87, E90, and E91 models. The integrated electronic module analyzes signals from wheel speed sensors and other chassis components, while the hydraulic part regulates pressure in the brake lines, supporting:

• driving stability during sudden braking,
• traction maintenance on surfaces with varying grip,
• reduced braking distance in emergency situations,
• proper operation of the DSC stability control system.

Thanks to its factory design, full compatibility with BMW software and electrical architecture is maintained, which facilitates diagnostics and subsequent operation.

Advantages of Using an Original ABS DSC Control Unit

Choosing an original brake booster control unit for BMW offers a range of practical technical benefits:

• Perfect fit for a specific BMW generation – no mechanical or electrical adaptation required.
• Seamless integration with factory safety systems, without the risk of errors due to parameter incompatibility.
• Ability to utilize existing mounting points and factory hydraulic and electrical connectors.
• Easier configuration and coding compared to aftermarket alternatives with ambiguous specifications.

This component, categorized under Other, is particularly attractive to users who want to restore full braking system functionality while maintaining the original operating characteristics of the ABS and DSC systems.

Product Characteristics and Condition

The offered component comes from the BMW OE line, meaning it was designed according to the manufacturer's factory standards. It is a used part, making it a cost-effective solution for workshops or individual users who expect original quality at a reasonable budget. This type of component is particularly useful in situations where:

• the existing ABS DSC control unit has suffered electronic or hydraulic damage,
• ABS/DSC system errors occur that cannot be resolved through diagnostics or wiring repair alone,
• a complete module replacement is necessary to restore proper brake system operation.

Original origin promotes predictable performance of driver assistance systems, which is important both in everyday driving and in emergency situations.

Selection, Compatibility, and Replacement Numbers

The ABS DSC module with brake booster has a dedicated OEM part number and associated interchangeable numbers, which facilitates unambiguous identification in BMW catalogs and service tools. When selecting, it is recommended to:

• compare the part number with the currently installed component in the vehicle,
• verify compatibility with the specific engine and equipment version of the BMW E87, E90, or E91,
• check the list of reference numbers in the service documentation.

Thanks to the presence of replacement numbers, this module can be used in various vehicle configurations within a given generation, increasing the flexibility of part selection in the workshop. Information about the numbers is available in the product's technical specifications section.

Related Products and Technical Knowledge

If you are looking for other components from the BMW Other category, check out our offer, where you will find a wide selection of components such as BMW Other, tailored to various models and generations of this brand.

For those interested in comparing solutions used in sports models from other manufacturers, including advanced braking and chassis systems, we recommend the blog article Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, which discusses construction and operational differences in terms of performance and part selection.

If you are planning a car upgrade using proven used components, it is also worth reading the guide Best Used Parts for Tuning Your Car, where you will find practical tips for safe and informed use of used components.