Audi S8 D3 Brake Caliper Wheel Braking Unit Rear Right O/S 4E4615404C

Visual condition of the part

The product shows signs of use visible in the photos.

Audi S8 D3 Brake Caliper Wheel Braking Unit Rear Right O/S is an original brake system component designed for installation on the rear right side of the vehicle. As part of the Brake Calipers and Brackets group, it ensures precise pad guidance relative to the disc and stable operation of the entire system. This used OEM component is a sensible choice for brake maintenance in an Audi S8 D3 when you want to maintain factory geometry and predictable braking behavior.

Specifications and technical data

• SKU: 4E4615404C
• Mark: Audi
• Condition: Used
• OEM Part Number: 4E4615404C
• Substitutable numbers: 4E4615404C, 4E4 615 404 C, 4E4615426D, 4E4 615 426 D
• Location on the vehicle: Rear, Right
• Category: Calipers & Brackets

Purpose and function in the brake system

The presented caliper is designed to operate on the rear right axle of the Audi S8 D3 generation, where it is responsible for evenly pressing the pads against the brake disc. A properly selected caliper guarantees stable operating pressure in the circuit, correct piston retraction after releasing the pedal, and repeatable braking force on the outer side of the vehicle.

Proper fitment of the caliper to the specific position on the vehicle is crucial for:

• maintaining symmetry of braking forces between the left and right sides of the axle,
• correct cooperation with the discs and pads intended for the S8 D3 version,
• maintaining vehicle stability during emergency braking from higher speeds.

Benefits of using an original Audi caliper

The original Audi brake caliper ensures factory fitment to the hub, carrier, and brake lines, which facilitates installation and reduces the risk of leaks. The OEM design is engineered for the specific loads and weight characteristics of the Audi S8 D3, ensuring the brake system maintains the parameters specified by the manufacturer.

The most important advantages of using this component include:

• maintaining the original brake pedal feel,
• compatibility with standard brake system components,
• the possibility of direct replacement of a worn caliper without modifying the installation.

Used condition and service aspects

The item is offered in used condition, which allows for optimizing repair costs while maintaining the original design. Before installation, standard service procedures are recommended, such as checking the guide pins, seals, and bleeding the system after installation. In the case of intensive vehicle use, it is worth combining the caliper replacement with an inspection of the other rear brake system components.

To maximize the potential of this component, it is a good solution to simultaneously check the condition of the discs, pads, and flexible hoses on the same axle, which helps avoid differences in braking force and accelerated wear of new elements.

Selection and safety when purchasing a used caliper

When choosing a used caliper for an Audi S8 D3, it is crucial to match it to the specific model version and location on the vehicle. It is worth paying attention to compatibility with the brake system used at the factory in the given vehicle configuration and the absence of mechanical damage to the housing. A well-chosen caliper reduces the risk of uneven pad wear, disc overheating, or vehicle pulling during braking.

If you want to organize the process of selecting brake components from the secondary market and avoid common purchasing mistakes, the following guide will be helpful: Second-hand brake system: how to safely select discs, calipers, and ABS?. There you will find a practical checklist useful when choosing used components in stores specializing in OEM parts.

Expanding Audi brake system service

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 additional calipers, carriers, or brackets, check the available parts in the Audi Brake Calipers and Brackets category.

Thanks to this, you can select a coherent set of components in one service stage, which facilitates maintaining uniform braking characteristics on both axles and improves the predictability of vehicle behavior in daily operation.