Audi RS3 8V Wheel ABS Speed Sensor WTH003861

Audi RS3 8V Wheel ABS Speed Sensor is a precision braking system component responsible for accurate wheel speed readings and the proper operation of the ABS system. This used, original Audi Group component ensures stable performance parameters and allows for a technically correct repair of the braking system in sports versions of Audi. By maintaining factory signal characteristics, it is a particularly beneficial solution for servicing high-performance vehicles such as the RS3 8V.

Specifications and technical data

• SKU: WTH003861
• Mark: Audi
• Condition: Used
• OEM Part Number: WTH003861
• Substitutable numbers: WTH003861, WTH 003 861
• Category: ABS Speed Sensors

Purpose and function in the ABS system

The presented item belongs to the ABS Speed Sensor category and works with the pulse ring on the wheel, generating a signal used by the braking system controller. A properly functioning sensor enables:

• precise modulation of pressure in the brake circuits during emergency braking,
• stable operation of the ABS system at high speeds,
• cooperation with related systems (traction control, electronic stability control), if present in the vehicle.

For sports-oriented models like the Audi RS3 8V, correct wheel speed reading is crucial for maintaining predictable vehicle behavior during dynamic driving.

Benefits of using an original Audi sensor

Using an original speed sensor in an Audi allows for maintaining the factory logic of the ABS system and consistency with the controller software. In practice, this means:

• appropriate signal characteristics without the need for adaptation,
• proper geometric fitment to the steering knuckle and wheel hub,
• reduced risk of errors in the ABS controller resulting from incorrect readings.

For the user, this translates into stable braking system performance and repeatable vehicle behavior in emergency situations.

Component condition and installation aspects

The offered sensor is in used condition, which means it has been removed from a vehicle and verified for further serviceability. This type of component, when installed correctly, can continue to provide proper performance parameters in the ABS system.

During installation, it is worth paying attention to:

• thorough cleaning of the socket in the steering knuckle before seating the sensor,
• correct routing of the cable, maintaining factory mounting points,
• checking the condition of the electrical connector and moisture seals.

This approach reduces the risk of signal interference and the recurrence of ABS errors after replacement.

Sensor selection and technical support

To select the correct speed sensor for a specific version of the Audi RS3 8V, one should pay attention to compatibility with the braking system and axle configuration. Manufacturer markings and interchangeable part numbers are helpful in verifying compatibility with a given vehicle.

If you are planning a comprehensive repair or upgrade of the braking area in your Audi and need other components from the same group, such as additional sensors, signal cables, or mounting elements, check the available parts in the Audi ABS Speed Sensor category.

Drivetrain safety and further reading

A functional speed sensor is important not only for the ABS itself but also for the cooperating systems responsible for power transmission and vehicle stability. In the case of high-power cars like the RS3, proper diagnostics and the selection of used components have a direct impact on the durability of the entire system.

To better understand the relationships between sensors, the differential, and the drivetrain, and to make informed choices when selecting used components, it is worth reading the guide Second-hand differential – what you need to know about used differentials, sensors, and drivetrain systems, which discusses the practical aspects of purchasing and operating such parts.

Additional tips regarding the operation and maintenance of salvaged parts, including electronic components and sensors, are also provided in the article How to extend the life of used car parts?, which allows you to maximize the potential of the used parts installed.