Audi A3 8V VW Golf Mk7 Crafter SY Caddy 3 Rear Axle Wheel Speed Sensor WHT003864

Audi A3 8V VW Golf Mk7 Crafter SY Caddy 3 Rear Axle Wheel Speed Sensor is a component from the ABS speed sensor category, designed for operation on the vehicle's rear axle. It enables precise reading of wheel rotation speed, supporting the stable operation of the anti-lock braking system and driver assistance systems. This is a solution for users looking for a proven, used component with factory-intended compatibility for popular VAG group models.

Specifications and technical data

• SKU: WHT003864
• Mark: Audi
• Condition: Used
• OEM Part Number: WHT003864
• Substitutable numbers: WHT003864, WHT 003 864, WHT 003 864 D, WHT003864D
• Location on the vehicle: Rear
• Category: ABS Speed Sensors

Purpose and function of the ABS speed sensor

The rear ABS speed sensor is responsible for transmitting wheel rotation speed information to the control unit, which allows for the effective operation of the system that prevents wheel lock-up during braking. In vehicles such as the Audi A3 8V, VW Golf Mk7, Crafter, SY, or Caddy 3, this component works with the brake system electronics, influencing driving stability, braking distance, and the operation of assistance systems such as traction control or electronic stability control.

Its placement on the rear axle means the sensor operates in demanding conditions – near the wheel hub, exposed to dirt, moisture, and temperature fluctuations. A properly selected and functional component helps maintain consistent ABS operation between the front and rear of the vehicle, which is particularly important during emergency braking or driving with a load.

Benefits of using an original sensor in the ABS system

Using an ABS speed sensor dedicated to specific VAG group models ensures compliance with the factory characteristics of the braking system. Proper alignment of the geometry, connector type, and electrical parameters reduces the risk of control unit errors and incorrect wheel speed readings. For the user, this means more predictable vehicle behavior during braking and less susceptibility to the accidental triggering of warning lights on the dashboard.

Choosing a used component of this class is an economical solution that also maintains consistency with the factory system design. In practice, this translates into easier installation, without the need for modifications to the wiring or the use of adapters, which is important for both workshops and users servicing their own cars.

Vehicle placement and installation aspects

The sensor is designed for installation in the rear of the vehicle, in the immediate vicinity of the wheel hub. This location requires maintaining the correct distance from the pulse ring and proper routing of the cable to avoid chafing and signal interference. When replacing, it is worth paying attention to:

• thorough cleaning of the mounting socket from corrosion and dirt,
• correct routing of the cable in the factory clips,
• secure fastening of the electrical connector, without slack or tension.

This approach minimizes the risk of ABS errors reappearing after installation and ensures a stable signal reading over the long term.

Application in popular VAG group models

Audi A3 8V VW Golf Mk7 Crafter SY Caddy 3 Rear Axle Wheel Speed Sensor has been designed to work with the braking systems used in a wide range of the group's models. As a result, it is a popular choice for both workshops specializing in Audi and Volkswagen brands and for users looking for parts with confirmed origin. Using one type of sensor across many models facilitates service logistics and speeds up the repair process, especially in the case of vehicle fleets.

For car owners, this means the ability to use a component with known characteristics that works with the factory ABS controller without the need for additional adaptation. This is especially important where the vehicle is used intensively, and the stability of the braking system has a direct impact on safety and driving comfort.

Safe selection of used braking system components

When choosing a used ABS speed sensor, it is worth paying attention to compatibility with the part number, body type, and the version of the braking system used in the specific vehicle. Comparing the design with the removed part and verifying the connector type can be helpful. For those who want to approach the topic comprehensively and consciously, we have prepared a practical guide describing the key aspects of selecting used braking system components – discs, calipers, and ABS elements. Detailed tips can be found in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?.

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 additional sensors, signal cables, or components working with the anti-lock system, check out the available parts in the Audi ABS speed sensor category.