BMW X3 E83 LCI ABS DXC Hydro Brake Braking Unit Pump 3439781 3439820

The BMW X3 E83 LCI DXC Brake Booster Pump ABS DSC is a specialized component in the ABS and ESP System category, designed for precise control of brake system pressure and driving stability. This OEM solution ensures consistent operation of the ABS and DSC system, enhancing vehicle safety and predictability in challenging road conditions.

Specifications and technical data

• SKU: 3450899
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 3450899
• Substitutable numbers: 34513450899, 3450899, 34513450607, 3450607, 34503416617, 3416617, 34503439836, 3439836, 34513439781, 3439781, 34523439820, 3439820, 34513420395, 3420395, 0265236012, 0 265 236 012
• Category: ABS & Stability Hydraulic Units

Purpose and Function in the ABS/DSC System

The presented ABS/DSC brake booster pump is designed to work with the electronic stability control systems in the facelifted (LCI) BMW X3 E83. It is responsible for:

• precise regulation of brake circuit pressure during ABS interventions,
• cooperation with the DSC module for trajectory correction,
• maintaining vehicle stability during sudden braking and on surfaces with varying grip.

This ensures that the braking system maintains consistent, predictable operating parameters, leading to better vehicle control in emergency situations.

Compatibility and Interchangeable Numbers

The pump has been developed as an OEM component for BMW, with an assigned original part number and a set of interchangeable numbers, facilitating the selection of the correct component for replacement. The presence of multiple references allows it to be matched to specific ABS and DSC system configurations used in the BMW X3 E83 LCI, minimizing the risk of incompatibility.

Before purchasing, it is advisable to compare the markings with the currently installed component or with the vehicle manufacturer's specifications to ensure full electrical and hydraulic compatibility with the existing system.

Product Characteristics and Condition

The offered pump belongs to the group of used components, which represents a cost-effective solution while maintaining the original BMW construction. This type of component is particularly attractive for intensive use vehicles where a reasonable balance between quality and price is important.

As a safety system component, the ABS/DSC pump should be installed following manufacturer procedures, including proper brake system bleeding and potential adaptation using an appropriate diagnostic tester.

Benefits of Using an Original ABS/DSC Pump

• Consistency with the Factory System – OEM construction ensures proper operating parameters with the ABS and DSC system in the BMW X3 E83 LCI.
• Stable Operation of Safety Systems – correct pump operation translates to more effective braking and better traction control.
• Optimized Repair Costs – a used original part allows for reduced expenses while maintaining high-quality manufacturing.
• Easier Diagnostics – compatibility with factory service software simplifies testing and potential system bleeding.

BMW ABS and ESP System – Practical Knowledge

A functional ABS and ESP System is crucial for driving safety, but in practice, it often works in conjunction with other components, such as the steering column or steering angle sensors. For a more comprehensive understanding of the relationships between these systems, refer to the guide: Steering System and Power Steering – How it Works and What Fails?. This will help you better assess fault symptoms and plan comprehensive vehicle diagnostics.

If you are also looking for other components in the ABS and ESP System category dedicated to this brand, check out our offer at BMW ABS and ESP System, where you will find matched components for various BMW models, organized by compatibility and application.