Audi A4 B9 A5 F5 Rear Electric Brake Caliper Housing Right O/S 8W0615404A

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A4 B9 A5 F5 Rear Electric Brake Caliper Housing Right O/S is an original component from the Brake calipers and carriers group, designed for the rear right axle of Audi vehicles with petrol engines. It is a solution for users who expect stable braking characteristics, proper cooperation with the hydraulic system, and the maintenance of factory braking system performance parameters.

Specifications and technical data

• SKU: 8W0615404A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0615404A
• Substitutable numbers: 8W0615404A, 8W0 615 404 A
• Location on the vehicle: Rear, Right
• Fuel type: Petrol
• Part type: Brake Caliper
• Category: Calipers & Brackets

Purpose and function in the braking system

The presented caliper is dedicated for installation on the rear right side of the vehicle in petrol-powered Audi cars. It is responsible for evenly pressing the brake pads against the disc, which translates into stable deceleration and predictable vehicle behavior during emergency braking and daily operation.

Thanks to the factory design, the correct mounting geometry, proper pad guidance, and compatibility with the stock hydraulic system are maintained. This helps reduce the risk of uneven pad wear, vibrations, or vehicle pulling during braking.

Benefits of using an original Audi caliper

Using an original caliper instead of a worn-out component allows for the restoration of factory braking system performance without the need for system modifications. This is particularly important in vehicles equipped with advanced assistance systems, where the correct operation of every component affects the effectiveness of ABS, electronic stability control, and safety assistants.

Key advantages include:

• maintenance of factory fitment to the hub and carrier,
• consistent cooperation with stock pads and discs,
• appropriate operating characteristics for petrol engine systems,
• possibility of installation without interfering with the suspension structure or brake lines.

For the user, this means predictable, repeatable braking and a reduction in the risk of problems resulting from the use of improperly selected aftermarket replacements.

Installation and operational characteristics

As an element from the Brake calipers and carriers group, the product is prepared to work in the demanding thermal and mechanical conditions typical for the rear axle of a vehicle. The design is intended to work with the stock brake master cylinder, lines, and hardware, which facilitates installation in workshop conditions.

The placement on the rear right side of the vehicle requires maintaining the correct orientation during installation so that the bleeder screw, brake line, and pad guiding elements are positioned according to factory specifications. A correctly installed caliper ensures stable pad guidance, even pressure on the disc, and repeatable braking force.

Component condition and practical application

The offered caliper is a used part, which allows for combining reasonable repair costs with the preservation of the original Audi design. This solution is particularly attractive for comprehensive rear axle maintenance when it is necessary to replace several braking system components, and maintaining factory specifications remains a priority.

In practice, such a choice works well both in daily city driving and on the highway, where braking stability and response repeatability are crucial for the safety of the driver and passengers.

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 front calipers, carriers, or mounting hardware, check the available parts in the Audi brake calipers and carriers category.

How to optimally select a used brake caliper

When choosing a used caliper, it is worth paying attention to compatibility with the specific engine version and braking system configuration. In the case of petrol vehicles, it is important to match the factory disc diameter, pad type, and the braking assistance systems used.

To better understand how to safely use recycled parts while lowering service costs, check out our guide: Brake calipers under the microscope: How to effectively lower braking system repair costs by choosing verified recycled parts. This will make it easier for you to assess when a used caliper will be the right solution for your car.