Description
Audi A4 B8 A5 8T Genuine Rear ABS Sensor is an original safety system component designed for installation on the vehicle’s rear axle. As a factory Audi component, it ensures proper cooperation with the ABS system and stable operation of the onboard electronics, which translates into predictable vehicle behavior during braking. This used OEM part is a sensible choice for brake system maintenance when you require compatibility with the factory installation.
Specifications and technical data
- SKU: 8E0927804F
- Mark: Audi
- Condition: Used
- OEM Part Number: 8E0927804F
- Substitutable numbers: 8E0927804F, 8E0 927 804 F, 0265007927, 0 265 007 927
- Location on the vehicle: Rear
- Category: ABS Speed Sensors
Purpose and function in the ABS system
The presented sensor belongs to the ABS speed sensor category and is mounted on the vehicle’s rear axle. It is responsible for the precise reading of wheel rotational speed, which allows the ABS controller to react quickly in emergency braking situations. A properly functioning sensor reduces the risk of wheel lock-up, supports driving stability, and improves vehicle control on slippery surfaces.
Its rear placement ensures that this component works in harmony with other rear axle brake system components, ensuring consistent operation of safety systems. By maintaining factory signal characteristics, the sensor interacts with the original controller without the need for installation modifications.
Original origin and compatibility
The product comes from the Audi range, which means it maintains factory operating parameters and ensures proper fitment for mounts and electrical wiring in A4 B8 and A5 8T models. The original ABS speed sensor minimizes the risk of system errors, such as ABS/ESP warning lights or malfunctions of driver assistance systems.
A used OEM part is particularly beneficial for repairs where the correct socket shape, cable length, connector type, and electrical compatibility with the factory controller are crucial. Using an original sensor helps avoid problems typical of aftermarket replacements with inconsistent signal parameters.
Condition, verification, and service application
The offered sensor is in Used condition, meaning it has been removed from a vehicle but is suitable for further use after proper installation and basic service inspection. This type of component is often chosen for:
- repairing the ABS system after damage to the cable or sensor body,
- diagnosing errors related to wheel speed readings on the rear axle,
- restoring full functionality of ABS/ESP systems after a collision or corrosion of mounts.
Before installation, it is recommended to check the condition of the socket, the cleanliness of the working surface, and the correctness of the seating in the steering knuckle or hubs to ensure a stable signal reading and avoid system interference.
Benefits of using an original ABS sensor
Using an original ABS speed sensor on the rear axle of an Audi A4 B8 / A5 8T provides a number of practical benefits:
- Consistency with the factory brake system – maintaining the parameters specified by the vehicle manufacturer.
- Stable cooperation with electronics – reducing the risk of errors appearing in the ABS/ESP controller.
- Proper mechanical fit – correct mounting and installation geometry in the steering knuckle or hubs.
- Economical repair – a used OEM part allows for lower service costs while maintaining high quality.
If you are planning a comprehensive repair or upgrade of the braking zone in your Audi and need other elements from the same group, such as sensors for other wheels, mounting elements, or signal harnesses, check out the available parts in the Audi ABS speed sensor category.
To better plan the service of the drivetrain and related sensors, it is worth familiarizing yourself with practical tips regarding the selection of used components – you will find them in the article Second-hand differential – what you need to know about used differentials, sensors, and drivetrain systems.
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