BMW G20 G21 G22 G23 G28 G42 DSC Pulse Generator Sensor Rear Axle 6894815

BMW G20 G21 G22 G23 G28 G42 DSC Pulse Generator Sensor Rear Axle is a precision brake system component responsible for accurately reading the rotational speed of the rear wheels. Thanks to its factory-fit design for the BMW G-series platform, it ensures stable integration with the ABS and traction control systems, supporting safe braking and predictable vehicle behavior. This is a solution for users who expect consistency with the original electronic architecture and proper operation of driver assistance systems.

Specifications and technical data

• SKU: 6894815
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6894815
• Substitutable numbers: 6894815, 34526894815
• Location on the vehicle: Rear
• Category: ABS Speed Sensors

Purpose and function of the ABS speed sensor

The offered item belongs to the ABS speed sensor category and is designed for installation on the rear axle of the BMW G-series vehicles listed in the title. Its placement on the rear axle allows for precise measurement of wheel rotational speed, which is crucial for the proper functioning of the anti-lock braking system and vehicle stability control.

The sensor generates a signal transmitted to the brake system control unit, which then regulates pressure in the brake circuits based on this data. A properly functioning component of this type supports:

• maintaining traction during emergency braking,
• vehicle stability on varying road surfaces,
• correct operation of assistance systems that rely on wheel speed readings.

Compatibility with the BMW G-series platform

This sensor has been designed for the architecture of the BMW G20, G21, G22, G23, G28, and G42, ensuring a perfect fit for the suspension geometry and designated mounting points on the rear axle. Using an original design allows for maintaining:

• consistency with factory wiring and connectors,
• proper positioning relative to the pulse ring,
• stable signal reading without interference.

As a result, installation is straightforward, and after proper mounting and diagnostics, the sensor can be put into operation without the need for additional mechanical modifications.

Characteristics of the used component

The offered ABS speed sensor is a used part, which means it has been removed from a vehicle and may show signs of wear typical for this group of parts. Such components are often chosen as an economical alternative to new parts, especially for routine repairs or restoration projects in vehicles a few years old.

When selecting a used sensor, it is worth paying attention to:

• compatibility with the specific body version and brake system,
• correct placement on the vehicle (rear axle),
• consistency with the control electronics in the specific BMW unit.

Safe selection of brake system components

When replacing an ABS speed sensor, it is advisable to treat the brake system as a whole and ensure the consistency of the components used. It may be helpful to use diagnostic procedures and compare parameters with the existing part. For those who want to deepen their knowledge on the conscious selection of used brake components, we recommend the following article: Second-hand brake system: how to safely choose discs, calipers, and ABS?.

BMW ABS speed sensors – expansion and modernization

If you are planning a comprehensive repair or modernization of the braking zone in your BMW and need other elements from the same group, such as additional sensors for other wheels, mounting hardware, or signal harnesses, check out the available parts in the BMW ABS speed sensor category.