Audi S4 B9 S5 F5 Brake Caliper Braking Unit Housing Right O/S 8W0615108F

Visual condition of the part

The product shows signs of use visible in the photos.

Audi S4 B9 S5 F5 Brake Caliper Braking Unit Housing Right O/S is an original braking system component from the Brake Calipers and Brackets category, designed for installation on the right side of the vehicle. Thanks to its factory-engineered Audi design, it ensures a precise fit to the steering knuckle, brake disc, and other system components, which facilitates servicing and helps maintain predictable braking performance. This used OEM part is a sensible choice for repairs when you want to maintain the factory characteristics of the braking system.

Specifications and technical data

• SKU: 8W0615108F-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0615108F
• Substitutable numbers: 8W0615108F, 8W0 615 108 F, 8W0 615 108 AE, 8W0615108AE
• Location on the vehicle: Right
• Part type: Brake Caliper
• Category: Calipers & Brackets

Purpose and fitment

The presented caliper has been designed specifically for Audi S4 B9 generation and Audi S5 F5 generation models, intended for the right side of the vehicle. This ensures compatibility with the suspension geometry, mounting points, and the specified diameter and thickness of the brake disc in these sports versions. The OEM design minimizes the risk of installation issues, uneven brake pad wear, or improper piston retraction after releasing the brake.

Construction and function in the braking system

The brake caliper plays a key role in converting hydraulic pressure into the clamping force of the pads against the disc. In the case of the sports Audi S4 B9 and S5 F5 models, the caliper design is optimized for:

• stable guidance of brake pads under high thermal loads,
• even distribution of forces across the friction surface,
• adequate body rigidity, limiting deflection during heavy braking.

The original Audi caliper ensures predictable operation with the factory brake master cylinder, lines, and assistance systems (ESP, ABS), which translates into consistent performance of the entire system.

Benefits of using an original used caliper

Choosing a used OEM caliper for the Audi S4 B9 / S5 F5 is a compromise between cost and maintaining factory quality. The most important advantages include:

• Factory fitment – maintaining original geometry and mounting points without the need for modifications.
• Consistency with other system components – proper cooperation with the disc, pads, and vehicle electronics.
• Serviceability – the caliper can undergo standard maintenance procedures, such as replacing seals, guide pins, or bleeding.
• Economical repair – a used part allows for cost reduction while maintaining the design intended by the manufacturer.

Before installation, it is recommended to perform a standard technical inspection of the caliper and the braking system to ensure safe vehicle operation.

Professional installation and operation

To fully utilize the potential of this caliper in an Audi S4 B9 or S5 F5, it is worth entrusting the installation to a specialized service center. Correct tightening of the mounting bolts, proper routing of the brake line, and thorough bleeding of the system have a direct impact on braking efficiency. It is also recommended to simultaneously check the condition of the disc and pads on the right side to avoid differences in braking force between the sides of the vehicle.

If you are planning a comprehensive repair or upgrade of the braking zone in your Audi and need other components from the same group, such as additional calipers, brackets, or supports, check the available parts in the Audi Brake Calipers and Brackets category.

Safe selection of used braking components

When choosing a used brake caliper for an Audi S4 B9 or S5 F5, it is crucial to pay attention to compatibility with the specific vehicle version and the general technical condition of the component. It is worth using reliable sources and proven verification procedures to avoid problems with the braking system after installation. Practical tips on assessing the condition of calipers, discs, and ABS components can be found in the article Second-hand braking system: how to safely select discs, calipers, and ABS?, which serves as a useful supplement when planning a repair.

Summary

Audi S4 B9 S5 F5 Brake Caliper Braking Unit Housing Right O/S is an original component from the Brake Calipers and Brackets category, designed for installation on the right side of the vehicle. It ensures a factory fit, predictable cooperation with the braking system, and represents a sensible solution for repairs where the priority is to maintain the braking characteristics intended by the manufacturer, Audi.