BMW F80 M3 F82 M4 DSC Hydro Braking Unit Pump 8089697 7851297

BMW F80 M3 F82 M4 DSC Hydro Braking Unit Pump is an advanced component of the stability control and braking system, designed for BMW M-series models. As a component in the ABS Control Units category, it works with the DSC system, responsible for precise pressure distribution in the brake circuits and the stable operation of electronic safety systems. This is a solution for users who expect efficient, consistent performance of the ABS and traction control systems in demanding road conditions.

Specifications and technical data

• SKU: 7851298
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7851297
• Substitutable numbers: 34517851297, 7851297, 8089697, 7851298, 7852637
• Category: ABS Control Modules

Purpose and function in the BMW braking system

The described DSC ABS pump is a component dedicated to BMW M sports models, where the braking system operates under higher loads than in standard versions. The integrated hydraulic unit, along with the ABS/DSC controller, is responsible for:

• controlling brake line pressure for each wheel,
• cooperation with wheel speed sensors and acceleration sensors,
• stability control during emergency braking or loss of traction,
• precise operation of the ABS, traction control, and electronic stability control systems.

As a result, the braking system maintains predictable, repeatable performance parameters, which is particularly important in cars with higher power and dynamic characteristics.

Benefits of using an original BMW ABS control unit

Using a component from the ABS Control Units group dedicated to BMW M allows for maintaining the factory logic of safety systems. The original control architecture ensures:

• proper communication with the vehicle bus and other electronic modules,
• consistent operation of ABS, DSC, and driver assistance systems,
• proper fitment to the characteristics of the brakes used in M3 and M4 versions.

In practice, this translates into stable vehicle behavior during braking, predictable response to system intervention, and a reduction in the risk of communication errors within the control network.

Product characteristics and condition

The presented DSC ABS pump is a used component, which allows for an economical restoration of the braking system's efficiency while maintaining original BMW specifications. This type of component is particularly attractive for post-accident repairs, replacement after a controller failure, or system upgrades during vehicle maintenance.

Thanks to the preservation of the factory design, a plug-and-play solution is possible after proper matching to the specific vehicle configuration (including potential adaptation and diagnostics). This is a practical option for workshops specializing in the BMW brand and users consciously investing in proven braking system components.

Selection and safety when purchasing used ABS components

When selecting a DSC ABS pump for a BMW, it is crucial to verify compatibility with the specific body style, engine, and equipment version. It is worth paying attention to:

• compatibility of the controller with the ABS/DSC system used in the given model year,
• type of braking system (especially in M versions),
• possibility of performing diagnostics and adaptation in the vehicle.

If you want to streamline the process of choosing used braking system components and minimize the risk of an incorrect purchase, use the practical tips included in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?, where you will find a detailed checklist also useful when selecting ABS pumps and DSC controllers.

Expanding BMW ABS system upgrades

If you are planning a comprehensive repair or upgrade of the braking area in your BMW and need other elements from the same group, such as control modules, hydraulic blocks, or ABS control units, check out the available parts in the BMW ABS Control Units category.