Audi S4 B9 S5 8T Front Brake Caliper Housing Black 375X36MM Left N/S 8W0615105

Audi S4 B9 S5 8T Front Brake Caliper Housing Black 375X36MM Left N/S is an original brake system component from the Brake calipers and brackets category, designed for installation on the front left axle. Its robust construction, tailored for a large 375 mm diameter and 36 mm thick brake disc, ensures stable brake system performance in high-performance vehicles.

Specifications and technical data

• SKU: 8W0615105
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0615105
• Substitutable numbers: 8W0615105, 8W0 615 105, 8W0615107AJ, 8W0 615 107 AJ
• Location on the vehicle: Front, Left
• Part type: Brake Caliper
• Category: Calipers & Brackets

Purpose and fitment

This brake caliper is designed specifically for Audi S-series models, where effective heat dissipation and consistent braking force are required during dynamic driving. The vehicle placement is the front left side, which facilitates clear identification of the component when planning repairs or brake system upgrades. Thanks to the factory mounting geometry and the appropriate spacing for the 375x36 mm disc, the caliper works with the large discs used in high-power versions, ensuring predictable braking characteristics and consistency with other system components.

Construction and operating parameters

The black front left caliper is engineered to withstand high thermal and mechanical loads typical of Audi S4 and S5 class vehicles. The housing provides the rigidity necessary for even pad pressure against the disc, which translates into stable, linear deceleration and reduced fading during repeated, intensive braking. Compatibility with a 375 mm diameter and 36 mm thick disc allows for effective use of a large friction surface, thereby achieving high braking efficiency while maintaining an adequate thermal margin. This configuration is particularly beneficial for vehicles driven dynamically, on highways, or in conditions involving frequent acceleration and braking.

Performance characteristics and installation

As a part from the Brake calipers and brackets category, this caliper is intended to work with properly selected brake discs and pads, creating a cohesive, efficient system. The used nature of the part allows for an economical refresh of the brake system while maintaining the manufacturer's original specifications, which is particularly important for vehicles where factory chassis tuning is a priority. Placement on the front left axle simplifies service planning – a mechanic can quickly verify compatibility with existing mounts and brake lines. In practice, this leads to efficient installation and reduced vehicle downtime in the workshop.

Benefits of using an original used caliper

Using an original, used brake caliper allows you to balance cost control with the preservation of factory braking characteristics. Compared to aftermarket replacements of uncertain origin, an original component ensures compliance with the vehicle manufacturer's design, which is significant for both safety and predictable vehicle behavior in emergency situations. If you want to better understand how to safely use used brake system components and how to assess their technical condition, it is worth reading our guide: Brake calipers under the microscope: How to effectively reduce brake system repair costs by choosing verified recycled parts. The article explains what to look for when selecting such components and how to plan repairs rationally.

Expanding the Audi brake system

If you are planning a comprehensive repair or upgrade of the braking system in your Audi and need other components from the same group, such as additional calipers, brackets, or mounting hardware, check out the available parts in the Audi brake calipers and brackets category.