Audi A4 B8 A5 8T Rear Wheel Brake Disc Left Right N/O/S Set 300x12

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A4 B8 A5 8T Rear Wheel Brake Disc Left Right N/O/S Set is a complete, used pair designed for the left and right side of the rear axle. The set has been designed as an original Audi solution, ensuring the correct operating parameters of the braking system and stable vehicle behavior during daily use. Thanks to its fitment for a specific model platform, this set is a practical choice for servicing the braking system in premium mid-size cars.

Specifications and technical data

• SKU: 8K0615601B
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0615601B
• Substitutable numbers: 8K0615601B, 8K0 615 601 B, 8K0 615 601 M, 8K0615601M
• Location on the vehicle: Rear, Right, Left
• Part type: Brake Disc Rotor
• Category: Brake Disc Rotors

Purpose and compatibility

The presented set includes rear brake discs mounted on the right and left side of the rear axle, dedicated to Audi A4 B8 generation and Audi A5 8T models. The design of the discs is adapted to the factory braking system of these vehicles, which allows maintaining the braking characteristics, thermal stability, and proper cooperation with calipers and brake pads as intended by the manufacturer.

Technical characteristics and design

The set of rear brake discs with a size of 300x12 has been designed for even distribution of braking forces on both wheels of the rear axle. The applied geometry and working thickness of the discs facilitate effective heat dissipation, which reduces the risk of overheating and a decrease in braking efficiency during more intensive driving. Replacing both sides simultaneously in one set helps maintain the symmetry of the system's operation and reduces the risk of differences in braking force between the wheels.

The original design of the discs is optimized for cooperation with vehicle safety systems, such as ABS or stability control, which translates into predictable vehicle behavior when braking on dry, wet, or uneven surfaces.

Condition, quality, and service application

The product comes from the segment of used original Audi parts, which means maintaining factory geometry and proper fitment to the hub and caliper. Such a choice is often used in workshops specializing in the brand, where priority is given to compliance with the manufacturer's solutions and a favorable cost-to-quality ratio. The set will work well both for standard maintenance replacement and for restoring full efficiency of the braking system after suspension repairs or caliper regeneration.

Selecting a set for both sides of the rear axle makes it easier to maintain even wear of friction elements and improves driving comfort, especially during emergency braking and at higher highway speeds.

Benefits of using original brake discs

Using factory brake discs in the Audi A4 B8 and A5 8T brings a number of practical benefits:

• secure fitment to the hub and caliper without the need for modifications,
• consistent braking characteristics in line with the manufacturer's specifications,
• stable system operation under various loads and temperatures,
• easier diagnostics and future service thanks to the preservation of OEM solutions.

For users who value predictable vehicle behavior and technically correct braking system service, this set of rear discs is a reasonable and functional solution.

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 discs, pads, or brake lines, check the available parts in the Audi brake discs category.

When selecting used braking system components, it is worth following a proven procedure for assessing condition and compatibility – you will find practical tips in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?, which discusses step-by-step what to look for when purchasing such components.