Audi A3 S3 8V Rear Electric Caliper Hand Brake Actuator Right O/S 5Q0615406FF

Audi A3 S3 8V Rear Electric Caliper Hand Brake Actuator Right O/S is an original component from the Brake calipers and carriers group, designed for operation in the rear right section of the braking system. The electric parking brake control ensures precise operation, stable vehicle holding, and convenient operation from the cabin.

Specifications and technical data

• SKU: 3Q0998281A
• Mark: Audi
• Condition: Used
• OEM Part Number: 3Q0998281A
• Substitutable numbers: 3Q0998281A, 3Q0 998 281 A, 5Q0615406FF, 5Q0 615 406 FF, 5Q0615406
• Location on the vehicle: Rear, Right
• Category: Calipers & Brackets

Purpose and function in the braking system

The presented actuator is the component responsible for driving the electric parking brake on the rear right axle of the vehicle. It works in conjunction with the brake caliper, generating the appropriate clamping force of the pads against the disc when the handbrake is activated. This ensures the braking system remains stable while parked, and the driver benefits from convenient electronic control instead of a traditional mechanical lever.

Design and technical advantages

The electric handbrake actuator for Audi is designed as an OEM component, structurally matched to the caliper and mounts in the rear right suspension section. Proper sealing and a housing adapted for road conditions help protect the mechanism from dirt and moisture, which promotes stable operation over a long service life.

Precise control of the actuator's working movement enables repeatable, controlled engagement and release of the parking brake. A properly selected torque and operating characteristic are crucial for even pad pressure, which reduces the risk of uneven wear of friction elements.

Selection, installation, and compatibility

Selecting the correct handbrake actuator is essential for the safety and proper operation of the entire system. For the Audi A3 / S3 8V generation, it is important to match the component to the rear right side of the vehicle and ensure compatibility with the installed brake caliper. A properly selected component facilitates installation and helps reduce the time required for service.

During replacement, it is recommended to:

• check the condition of the brake caliper working with the actuator,
• verify the correct operation of the mechanism after installation (engaging and releasing the brake),
• perform adaptation or reset settings in the controller if required by the service procedure for the specific model.

This approach helps maintain the consistency of the entire braking system and minimizes the risk of system errors.

Characteristics of the used product

The offered actuator is a used component, which in practice means a favorable cost-to-functionality ratio while maintaining the manufacturer's original design. For components from the Brake calipers and carriers group, choosing OEM parts from the secondary market often allows for maintaining factory fitment and performance parameters while reducing expenses compared to a new subassembly.

Before installation, it is worth paying attention to the integrity of electrical connectors, the condition of sockets, and the freedom of movement of the mechanism. A properly prepared and checked component can effectively work with the existing braking system, ensuring stable parking brake operation.

Safety and additional materials

When working with used braking system components, a conscious assessment of the technical condition and correct installation are particularly important. To better plan service and component selection, it is worth using a guide describing the principles of safely purchasing items such as discs, calipers, or ABS modules – you can find them 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 calipers, mounting brackets, or additional mounting hardware, check the available parts in the Audi brake calipers and carriers category.