BMW E87 E90 E91 ABS DSC Module Pump ECU Hydro unit 6776056 6776055

BMW E87 E90 E91 ABS DSC Module Pump ECU Hydro unit is an original ABS/DSC hydraulic module designed for BMW 1 and 3 Series models, ensuring stable operation of anti-lock braking and traction control systems. This is an OEM solution from the ABS & ESP System category, engineered for precise integration with the vehicle's electronics and factory braking system. By maintaining factory specifications, it provides a solid foundation for the professional repair or replacement of a faulty ABS pump controller.

Specifications and technical data

• SKU: 6776056-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6776056
• Substitutable numbers: 34516794646, 6794646, 345167705906770590, 345167740716774071, 345167716936771693, 34516791521, 6791521, 6776056, 34526776056
• Category: ABS & Stability Hydraulic Units

Purpose and function in the vehicle

The presented ABS/DSC module plays a key role in managing brake system pressure and implementing vehicle stability control functions. The integrated hydraulic block with control electronics works in conjunction with wheel speed sensors, the braking system, and the traction control system to:

• prevent wheel lock-up during emergency braking,
• support traction maintenance during dynamic maneuvers,
• coordinate the operation of the DSC stability control system,
• maintain appropriate pressure in the brake circuits under various road conditions.

Thanks to its factory design, the module is matched to the electrical and hydraulic architecture of the BMW, which facilitates seamless integration with the existing installation.

Benefits of using an original BMW ABS/DSC module

Using an original module from the ABS & ESP System group allows you to maintain the performance parameters specified by the vehicle manufacturer. In practice, this means:

• consistency of safety system operation – ABS, DSC, and related functions operate based on factory algorithms,
• proper communication with the vehicle's control unit network,
• maintenance of correct braking characteristics in various driving modes,
• easier computer diagnostics at the service center due to compatibility with BMW service software.

The module is an OEM component, which promotes proper mechanical and electrical fitment without the need for installation modifications.

Condition, verification, and selection by part numbers

The item comes from the secondary market and is offered as a used OEM component, which is a cost-effective solution while maintaining factory design. Before installation, a standard diagnostic procedure and verification of compatibility with the specific vehicle version are recommended, in particular by:

• comparing the OEM part number with the currently installed module,
• checking available interchangeable numbers in service documentation,
• verifying compatibility with the car's model year and engine version.

For workshops and end-users, selection by part numbers is the most reliable method to avoid issues with controller communication and the correct operation of the ABS/DSC system.

Installation and operational recommendations

Due to the module's importance for driving safety, installation in a specialized service center is recommended, using proper brake system bleeding procedures and controller adaptation via diagnostic tools. A correctly selected and installed module:

• restores full functionality of the ABS and DSC system after a failure,
• eliminates errors related to brake system pressure and pump operation,
• ensures stable operation of driver assistance systems in daily use.

Regular inspection of brake fluid condition and periodic diagnostics of the ABS/ESP system help extend the lifespan of the entire system and reduce the risk of recurring faults.

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, controllers, or stability control modules, check the available parts in the BMW ABS & ESP System category.

For users who want to deepen their knowledge on the selection and operation of components responsible for driving comfort and safety, the guide article Air conditioning and heating – part selection and maintenance for year-round comfort will be helpful, as it discusses practical principles for choosing used OEM components and service schedules.

If you want to streamline the process of purchasing parts from the secondary market and minimize the risk of a wrong choice, it is also worth reading the material Safe purchase of used car parts online – a step-by-step guide, which describes strategies for selection by OEM numbers, cooperation with a workshop, and best practices for online orders.