Audi A5 8T Rear Electric Brake Caliper Housing Left N/S 330x22mm 8K0615403A

Audi A5 8T Rear Electric Brake Caliper Housing Left N/S 330x22mm is an original brake system component designed for installation on the rear left axle of the vehicle. This used OEM caliper ensures proper pad guidance relative to the 330x22 mm disc, resulting in stable and predictable braking. It is a solution for users who want to maintain the factory braking characteristics of their Audi without compromising on fitment or mounting geometry.

Specifications and technical data

• SKU: 8K0615403A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0615403A
• Substitutable numbers: 8K0615403A, 8K0 615 403 A
• Location on the vehicle: Rear, Left
• Category: Other Brake Parts

Purpose and function in the braking system

The presented caliper operates on the rear left axle, responsible for evenly pressing the brake pads against the brake disc. The design, adapted for a disc with a diameter of 330 mm and a thickness of 22 mm, allows for maintaining the correct contact surface and appropriate braking force, in accordance with Audi's factory specifications for the A5 8T model.

Selecting the correct caliper for the specific disc size is crucial for:

• maintaining even wear of pads and discs,
• preserving vehicle stability during heavy braking,
• proper operation of assistance systems (ABS, ESP) that depend on predictable braking force on the rear axle.

Original origin and fitment

As an Audi brand component, the caliper has been specifically designed for the suspension and braking system geometry of the A5 8T. This means factory mounting points, the correct distance from the hub, and compatibility with the brake lines intended for this model. Consequently, installation is similar to a standard service replacement, without the need for modifications or the use of adapters.

The product has a dedicated OEM part number and assigned interchangeable numbers, which facilitates verification of compatibility with a specific vehicle configuration in parts catalogs and service systems.

Condition, origin, and benefits of choosing a used caliper

The caliper comes from the Used segment, which allows for combining an attractive purchase cost with the retention of the original OEM design. For many Audi A5 8T users, this is a reasonable compromise between repair economy and maintaining factory braking parameters.

Choosing a used brake caliper offers a number of practical benefits:

• preservation of the original braking system performance characteristics,
• better fitment to the existing disc and pads compared to cheap aftermarket replacements,
• the ability to quickly replace a damaged component without interfering with other system parts.

Installation and service recommendations

The caliper is intended for installation in the Rear, Left position, which must be strictly taken into account when planning the repair. During replacement, it is recommended to:

• check the condition of the 330x22 mm brake disc,
• verify the brake lines and bleed the system after installation,
• check the parallel operation of the caliper relative to the disc after bolting it to the steering knuckle.

This approach minimizes the risk of uneven braking and accelerated wear of friction elements, and also allows for fully utilizing the potential of the applied factory solution.

Brake system expansion and technical knowledge

If you are interested in how different brake configurations affect the performance and driving characteristics of sporty Audi variants compared to standard versions, it is worth checking out our expert material. In the article Audi RS vs other models – what is hidden under the hood and chassis? you will find a discussion on, among other things, the differences in brake and chassis construction, which facilitates informed selection of service and upgrade components.

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, carriers, or small mounting accessories, check out the available parts in the Other Audi category.