Audi A4 B9 A6 C8 Electric Brake Caliper Bracket Housing Rear Left N/S 8W0615403N

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A4 B9 A6 C8 Electric Brake Caliper Bracket Housing Rear Left N/S is an original component from the Brake Calipers and Brackets group, designed to work with the rear electric brake caliper. Thanks to its factory geometry and robust construction, it ensures stable caliper seating and proper operation of the braking system on the rear left axle of the vehicle.

Specifications and technical data

• SKU: 8W0615403N-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0615403N
• Substitutable numbers: 8W0615403N, 8W0 615 403 N
• Location on the vehicle: Rear, Left
• Part type: Brake Caliper
• Category: Calipers & Brackets

Purpose and function in the braking system

The presented bracket serves as a structural base for the electric brake caliper on the rear left side of the vehicle. It is responsible for:

• precise positioning of the caliper relative to the brake disc,
• maintaining constant connection rigidity during braking,
• proper cooperation with the electric parking brake mechanism.

By maintaining factory mounting points, the bracket allows for trouble-free installation in dedicated Audi models, without the need for modifications or adaptations.

Construction and fitment for Audi A4 B9 / A6 C8

The bracket has been designed specifically for use with the rear electric caliper in modern mid-size and premium Audi platforms. The design provides:

• dedicated slots for caliper guide pins,
• factory mounting points for the rear axle steering knuckle,
• appropriate material rigidity for operation with ESP/ABS systems.

Such fitment translates into stable brake pad guidance, even disc wear, and predictable braking system response in both road and test conditions.

Condition, verification, and safety of use

The item comes from dismantling and is offered as a used original Audi component. This type of part, when properly assessed for the condition of working surfaces and threads, can be successfully reused in a professional service or during vehicle repair in workshop conditions.

Before installation, a standard preparatory procedure is recommended: cleaning contact surfaces, inspecting threads, checking for play on the caliper guides, and applying appropriate assembly agents (high-temperature greases, thread-locking compounds – in accordance with Audi service documentation). This approach increases the durability of the repair and supports safe operation of the rear braking system.

Benefits of using an original caliper bracket

Using a factory electric caliper bracket in an Audi A4 B9 or A6 C8 allows you to maintain:

• compliance with the vehicle manufacturer's design parameters,
• proper geometry of the caliper and disc operation,
• consistent operation with braking assistance systems.

For the user, this means predictable vehicle behavior during braking, easier diagnostics of potential faults, and the ability to continue service maintenance in accordance with the manufacturer's procedures. This solution is particularly beneficial for repairs of vehicles used intensively, where repeatability and stability of braking parameters are essential.

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, brackets, or supports, check the available parts in the Audi Brake Calipers and Brackets category.

For users who want to consciously select used braking system components and verify key inspection points before installation, we recommend the guide: Second-hand braking system: how to safely choose discs, calipers, and ABS?. There, you will find a practical checklist helpful in evaluating components such as caliper brackets, calipers, or control elements.