Audi S4 B8 Front Brake Caliper Wheel Brake Unit Housing Left N/S 8K0615123G

Audi S4 B8 Front Brake Caliper Wheel Brake Unit Housing Left N/S is a component from the Brake calipers and brackets group, designed for use in the front left section of the braking system. The original Audi design ensures proper brake pad guidance, stable caliper mounting, and predictable vehicle behavior during braking.

Specifications and technical data

• SKU: 8K0615123G
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0615123G
• Substitutable numbers: 8K0615123G, 8K0 615 123 G
• Location on the vehicle: Front, Left
• Category: Calipers & Brackets

Purpose and function in the braking system

The front left caliper bracket in the Audi S4 B8 is responsible for the precise positioning of the caliper relative to the disc and the even guidance of the brake pads. A correctly selected component in this location is crucial for:

• maintaining constant braking system geometry under dynamic loads,
• stable operation of the brake pads without excessive play or vibrations,
• even pressure on the disc during emergency braking and daily use.

Its placement on the vehicle in the front – left side zone means the component operates under demanding thermal and mechanical conditions, which is why using an original bracket has a direct impact on safety and braking force consistency.

Construction and fitment for the Audi S4 B8

The bracket was designed by the Audi brand with the specific loads of the S4 B8 version in mind, where the braking system must cope with higher speeds and a more intensive driving style. The design provides appropriate mounting points for the steering knuckle and housing for the caliper guide pins, which enables:

• maintaining the factory position of the caliper relative to the disc,
• compatibility with standard braking system components,
• reducing the risk of uneven brake pad wear.

As a result, replacing a damaged or corroded bracket with an original part allows for the restoration of factory operating parameters without the need to modify other sub-assemblies.

Characteristics of the used component

The presented brake caliper bracket is a used component, which in practice offers a favorable compromise between repair costs and maintaining the manufacturer's original specifications. Compared to low-budget replacements, original used components often offer:

• better fitment to the steering knuckle and other system elements,
• preservation of factory dimensional tolerances,
• greater predictability during intensive braking.

This type of solution is particularly attractive for repairs of vehicles driven dynamically, where both safety and reasonable service costs are important.

Benefits of using an original bracket

Using an original front left caliper bracket in the Audi S4 B8 allows for maintaining the integrity of the entire braking system. The most important advantages include:

• factory compatibility with other Audi braking system components,
• reducing the risk of incorrect caliper and disc alignment,
• the ability to restore proper brake operation after a collision or intensive use.

For workshops and individual users, this means easier part selection, fewer potential installation problems, and a predictable final result after the repair.

Technical support and additional information

To better understand how to optimally plan braking system repairs using original recycled parts, it is worth checking out practical tips. A detailed discussion on selecting and using such components can be found in the article Brake calipers under the microscope: How to effectively reduce braking system repair costs by choosing proven recycled parts.

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 brackets, caliper housings, or mounting supports, check out the available parts in the Audi brake calipers and brackets category.