VW Golf Mk7 Passat B8 Audi A3 8V Rear ABS Speed Sensor WHT003864B

VW Golf Mk7 Passat B8 Audi A3 8V Rear ABS Speed Sensor is an original component from the ABS speed sensor group, designed for operation on the vehicle's rear axle. It ensures precise reading of wheel rotational speed, which translates into stable operation of the ABS system, traction control, and driving safety assistance systems.

Specifications and technical data

• SKU: WHT003864B
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: WHT003864B
• Substitutable numbers: WHT003864B, WHT 003 864 B, WHT003864A, WHT 003 864 A, WHT003864C, WHT 003 864 C
• Location on the vehicle: Rear
• Category: ABS Speed Sensors

Purpose and function in the braking system

The rear ABS speed sensor is responsible for generating a wheel rotational speed signal, which is analyzed by the anti-lock braking system controller. A properly functioning component allows for:

• maintaining stable ABS operation during emergency braking,
• cooperation with traction control and electronic stability control systems,
• precise metering of braking force on the rear axle,
• reducing the risk of skidding on surfaces with variable grip.

Thanks to its dedicated placement on the rear axle, the sensor is matched to the suspension and braking system characteristics of the Volkswagen and Audi models mentioned in the title.

Compatibility and identification parameters

The element was designed as a Volkswagen brand component, which means compliance with factory construction and electrical standards. The sensor has an assigned OEM part number and associated interchangeable numbers, which facilitates unambiguous identification in service catalogs and parts selection systems.

Thanks to the presence of the SKU, OEM part number, and reference numbers, the product can be precisely matched to a specific version of the VW Golf, Passat B8, or Audi A3 8V, minimizing the risk of installing an incorrect component.

Vehicle placement and installation aspects

The sensor is intended for installation in the rear part of the vehicle, in the immediate vicinity of the wheel hub or braking system components, in accordance with the factory design of the given model. Such placement ensures:

• correct signal reading from the impulse ring,
• stable routing of the signal cable along the suspension,
• maintaining the appropriate working distance between the sensor and the measuring element.

When replacing, it is recommended to maintain the original cable routing path and thoroughly clean the mounting socket to ensure proper seating and long-term, repeatable sensor operation.

Characteristics of the used product

The offered ABS speed sensor is a used component, sourced from dismantling. Such components are often chosen as an economical alternative to new parts, especially for vehicles used on a daily basis. A used sensor allows for reducing repair costs while maintaining compliance with factory electrical and mechanical specifications.

Before installation, it is worth paying attention to the condition of the electrical connector, the cable, and the sensor's working surface to ensure stable contact and correct communication with the ABS control module.

Technical support and selection of drivetrain components

In the case of vehicles equipped with advanced drivetrain and electronic systems, the correct cooperation of speed sensors with the differential and drivetrain is crucial for the safety and durability of the subassemblies. If you want to deepen your knowledge about the selection of used components in this area, practical methods of assessing their condition, and typical symptoms of wear, check out the guide: Second-hand differential – what is worth knowing about used differentials, sensors, and drivetrain systems.

Volkswagen ABS speed sensors – expansion and system modernization

If you are planning a comprehensive repair or modernization of the braking zone in your Volkswagen and need other elements from the same group, such as sensors for the other side of the axle, additional sensors for the front axle, or spare measuring modules, check the available parts in the Volkswagen ABS speed sensor category.