BMW G20 G21 G22 G23 ABS Pump Hydraulic DSC Unit Block Brake System 5A6DC73

BMW G20 G21 G22 G23 ABS Brake Controller DSC Pump is a used braking system module designed for modern BMW 3 and 4 Series models. The element combines the function of a pump and a DSC stability control system controller, ensuring precise pressure management in the braking system.

Specifications and technical data

• SKU: 5A6DC73
• Mark: BMW
• Condition: Used
• OEM Part Number: 5A6DC73
• Substitutable numbers: 5A6DC73, 34505A6DC73
• Part type: ABS Hydraulic Unit
• Category: ABS Pumps & Components

Purpose and compatibility

This ABS DSC pump controller is designed to work with the B57D30B drive unit, used in selected versions of the BMW G20, G21, G22, and G23. This makes it the right choice for users seeking a component tailored to their vehicle's specific engine and electronic configuration.

This system belongs to the category of other ABS parts, which means that it plays a key role in the operation of the anti-lock braking system and stability control, integrating with other vehicle safety modules.

Technical and functional characteristics

The module combines the hydraulic and electronic parts in one housing, responsible for:

• control of pressure in brake circuits during standard braking and emergency maneuvers,
• cooperation with the DSC system in detecting wheel slippage and correcting the driving path,
• precise dosing of braking force to individual wheels, in accordance with signals from rotational speed sensors and acceleration sensors,
• integration with vehicle electronics in terms of driver assistance functions.

This combination of the controller and pump in one unit reduces the number of hydraulic connections, which promotes stable operation of the system and facilitates installation.

Condition, origin and mileage

The component is offered as a used part, allowing for a cost-effective repair of the braking system while maintaining the original manufacturer's specifications. The declared mileage of the assembly is 34, indicating very limited use compared to the typical mileage found on aftermarket parts.

For the user, this means a beneficial combination: maintaining the factory operating characteristics of the ABS/DSC system while reducing the costs compared to a new component.

Application in service practice

Replacing the ABS DSC pump controller is particularly important in situations where:

• ABS or DSC error messages on the instrument cluster,
• problems with modulation of braking force during sudden braking,
• incorrect operation of the stability control function.

The use of an original module from the same design family allows for software and operating parameters to be consistent with other vehicle systems, which is particularly important in modern BMW models.

Other BMW ABS controllers and pumps

If you are looking for other ABS controllers and pumps for BMW from the same model group or related generations, check out our dedicated category ABS controllers and pumps for BMW , where you will find a wide selection of compatible solutions for various engine and body versions.

Knowledge and advice on used parts

When planning to upgrade or repair systems in older BMW models, it's worth learning best practices for selecting aftermarket components. The article "The Second Life of a Youngtimer – How Used Car Parts Rejuvenate 1998–2012 Cars" will be helpful in this context. It describes how to consciously use used components to maintain vehicle safety and functionality.

Summary

The BMW G20 G21 G22 G23 ABS Brake Controller/DSC Pump is a technically advanced, used braking system module designed for the B57D30B engine. Its low mileage, unique design, and integrated ABS and DSC functions make it a rational choice for users who want an efficient, factory-compliant solution for modern BMW 3 and 4 Series models.