BMW 1 3 Series E81 E87 E90 E92 LCI DSC Pulse Generator Sensor Rear 6870076

BMW E81 E87 E90 E92 LCI DSC ABS Wheel Speed Sensor Rear 6870076 is an original component of the stability control and ABS system, designed for installation on the rear axle of selected BMW 1 and 3 Series models after facelift. This wheel speed sensor works with the DSC module, ensuring precise monitoring of wheel rotation and stable operation of safety systems. Thanks to its factory BMW construction, it is a reliable service solution for discerning users.

Specifications and technical data

• SKU: 6870076
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6870076
• Substitutable numbers: 34526870076, 6870076, 34526785021, 6785021, 34526760425, 6760425
• Location on the vehicle: Rear
• Category: Other Interior Parts & Accessories

Purpose and Function of the DSC/ABS Sensor

The rear wheel speed sensor is responsible for generating pulses transmitted to the DSC/ABS controller, which uses them to manage the anti-lock braking system and stability control systems. In practice, this means:

• continuous measurement of rear wheel rotational speed,
• cooperation with the ABS system during emergency braking,
• support for the DSC system in detecting skids and loss of traction,
• proper functioning of traction control features.

A properly functioning rear axle sensor is crucial for maintaining vehicle stability, ensuring correct operation of the chassis electronics, and preventing dashboard error lights.

Compatibility with BMW 1 and 3 Series LCI Models

The presented component has been designed for BMW E81, E87, E90, and E92 models after facelift (LCI). This ensures compatibility with the hub design, wiring harness, and DSC system architecture used in these generations. As a result:

• factory mounting points on the rear axle are maintained,
• the electrical connector fits the original wiring harness without modifications,
• the sensor's operating parameters are consistent with the DSC controller's requirements.

Before purchasing, it is advisable to compare the type of sensor installed in your specific vehicle to ensure full compatibility with the braking system and electronics.

Characteristics and Advantages of an Original BMW Component

The rear wheel DSC/ABS sensor offered here is a genuine BMW part, ensuring adherence to factory operating parameters. Key advantages include:

• appropriate pulse signal characteristics tailored to the DSC controller,
• correct interaction with the ABS and traction control systems,
• factory fitment in the hub socket and correct cable length,
• suitability as a service part for resolving errors related to rear wheel speed.

By using an original solution, you can restore the proper functioning of safety systems without the need for adaptation or modification of the installation.

Vehicle Placement and Installation Aspects

The presented sensor is designed for installation on the rear axle of the vehicle. Installation involves seating the sensor in the socket near the wheel hub and connecting it to the factory wiring harness. When replacing, pay attention to:

• thorough cleaning of the sensor socket in the steering knuckle or hub,
• proper routing of the cable to prevent abrasion,
• checking the condition of the pulse ring in the wheel hub.

Properly executed installation ensures stable sensor operation and minimizes the risk of recurring wheel speed-related errors.

Condition and Service Application

The offered component is in used condition, making it an attractive solution for users seeking an economical repair while maintaining original BMW specifications. This type of sensor is particularly suitable in situations where:

• ABS/DSC warning lights appear on the dashboard,
• diagnostics indicate a rear wheel speed error,
• a damaged sensor due to corrosion or mechanical damage to the cable needs replacement.

Choosing an original part from a dismantled vehicle allows for consistency with the vehicle's original braking system and electronics.

If you are planning further work on the running gear, body electronics, or other chassis-mounted components in your BMW and are looking for additional compatible parts from this brand, check out the available parts in the Other BMW category.

For drivers interested in comparing solutions used in sporty versions of other brands, including advanced braking systems and chassis components, an article describing the differences between high-performance and standard versions may be helpful – more information can be found in the material Audi RS vs. Other Models – What’s Under the Hood and Chassis?.