DSC Brake Pump BMW E90 E91 E92 E93 ABS Hydro Braking Unit 6789303 6789304

DSC Brake Pump BMW E90 E91 E92 E93 ABS Hydro Braking Unit is a stability control system component designed for the BMW 3 Series E9x generation, compatible with the factory ABS/ESP system. Thanks to its precise OEM design and perfect fit with the vehicle's electronics, it ensures consistent operation of the braking system and safety features, which translates into predictable vehicle behavior in critical road situations. This is the ideal solution for users who expect compatibility with the original installation and wish to maintain the factory handling characteristics of their BMW.

Specifications and technical data

• SKU: 2460437-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2460437
• Substitutable numbers: 6789303, 6789304, 34522460451, 34512460437, 2460437, 34516788522, 6788522, 34516789308, 6789308, 34516863356, 6863356
• Category: ABS & Stability Hydraulic Units

Purpose and function in the ABS and ESP System

The described DSC Brake Pump operates within the ABS and ESP System, responsible for generating and modulating hydraulic pressure in the brake circuits. In practice, this means active cooperation with wheel speed sensors, the stability control module, and the anti-lock braking system, which allows for:

• controlled reduction of wheel slip during emergency braking,
• vehicle stabilization during sudden changes in driving direction,
• precise pressure distribution in individual brake circuits.

By maintaining the original hydraulic and electrical architecture, the pump works with factory BMW control maps, which is essential for drivers who expect predictable vehicle response in all conditions.

Compatibility and interchangeable numbers

The DSC Brake Pump has been designed as an OEM part by BMW, with an assigned main part number and a set of interchangeable numbers. The presence of multiple reference numbers facilitates the selection of the correct component for a specific vehicle configuration (engine, model year, trim level), while also allowing for seamless replacement of earlier pump variants with a newer equivalent from the same product line.

Before purchasing, it is recommended to compare the markings with your existing part or service documentation to ensure full compatibility with the wiring harness, control unit, and hydraulic port layout in your specific BMW 3 Series E90, E91, or E92.

Performance characteristics and installation

The offered DSC Brake Pump is a component removed from a vehicle, meaning it comes from original factory assembly and retains the operating parameters specified by the manufacturer. This type of component is particularly valued in vehicles where maintaining compliance with factory software and braking system configuration is crucial.

In practice, the installation involves:

• mechanically mounting the pump in the factory location,
• connecting the brake lines according to the original layout,
• plugging the electrical connector into the vehicle's wiring,
• bleeding the brake system and performing any necessary adaptation using a suitable diagnostic tester.

Due to the component's importance for driving safety, installation in a specialized service center equipped with the appropriate diagnostic tools for BMW ABS/ESP systems is recommended.

Benefits of using an original BMW DSC Brake Pump

Using an original DSC Brake Pump in a BMW 3 Series E90/E91/E92 allows for maintaining the consistency of all functions associated with the ABS and ESP System, such as traction control, stability control, or emergency brake assist. The user gains:

• preservation of factory safety system intervention characteristics,
• compatibility with the existing electrical and hydraulic installation,
• the ability to perform future diagnostics using standard BMW service tools.

For many owners, it is also important that an original component from the BMW group minimizes the risk of communication issues between control units and limits the need for wiring or software modifications.

Expanding ABS and ESP System service in BMW

If you are planning a comprehensive repair or upgrade of the braking zone in your BMW and need other elements from the same group, such as control modules, wheel speed sensors, or pressure lines, check out the available parts in the BMW ABS and ESP System category.

When selecting used braking system components – including ABS/DSC pumps, calipers, or discs – it is worth following proven verification procedures for technical condition. Practical tips on how to safely choose such components based on part history, inspection, and diagnostics can be found in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?.

If you are servicing other vehicle systems in parallel, including the thermal comfort system, the general principles for selecting used OEM components and maintenance schedules described in the guide Air conditioning and heating – part selection and maintenance for year-round comfort may be helpful, which can be analogously applied when planning long-term BMW maintenance.