Audi A4 B8 A5 8T Front Brake Disc Set Left Right N/O/S 314x25 8K0615301

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A4 B8 A5 8T Front Brake Disc Set Left Right N/O/S 314x25 is an original set mounted on the left and right side of the front axle, designed for the factory Audi braking system. By maintaining the correct working diameter and thickness, the discs ensure stable braking parameters and predictable vehicle behavior. This is a solution for users who want to maintain consistent braking system performance with the factory Audi characteristics.

Specifications and technical data

• SKU: 8K0615301
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0615301
• Substitutable numbers: 8K0615301, 8K0 615 301, 8W0 615 301 T, 8W0615301T
• Location on the vehicle: Front, Left, Right
• Category: Brake Disc Rotors

Purpose and fitment for Audi A4 B8 / A5 8T

The set includes two discs intended for the front of the vehicle, left and right side, which allows for the simultaneous replacement of both axle components and maintains even braking efficiency. The set has been designed for the factory calipers used in the Audi A4 B8 generation and Audi A5 8T, taking into account the appropriate working diameter and disc thickness, which minimizes the risk of installation issues and improper brake pad contact.

The working dimensions of the discs (diameter and thickness) correspond to the configuration used as standard in these models, which facilitates maintaining proper braking characteristics, thermal stability, and compatibility with assistance systems such as ABS or ESP.

Technical characteristics and disc construction

The discs belong to the Brake discs category and are manufactured using technology intended for the vehicle's front axle, where thermal and mechanical loads are highest. The applied construction ensures:

• appropriate mass and heat capacity, which reduces the fading phenomenon during intensive braking,
• a stable friction surface, allowing for even wear of the brake pads,
• proper guidance of the disc relative to the hub and caliper, which reduces the risk of runout and vibrations on the brake pedal.

Selecting the correct disc diameter and thickness is crucial for maintaining the proper geometry of the braking system. In this set, these parameters are consistent with Audi's factory specifications for the front axle, which promotes trouble-free operation and predictable vehicle behavior during braking.

Condition, safety, and practical application

The offered set of discs is a used item, which allows for an economical replacement while maintaining the manufacturer's original specifications. In practice, this means the ability to match existing calipers and hubs without the need for system modifications. Before installation, it is recommended to perform a standard inspection of the friction surfaces, measure the thickness, and verify any signs of overheating to ensure safe operation in daily driving.

The set is particularly useful when servicing the front axle, when it is necessary to replace both discs simultaneously, which helps maintain even brake operation on both sides of the vehicle and reduces the risk of pulling during braking.

Benefits of using original Audi discs

Choosing original Audi discs for the A4 B8 and A5 8T allows you to maintain factory fitment and predictable braking characteristics. Thanks to this:

• the braking system operates within the parameters provided by the manufacturer,
• compatibility with standard brake pads is maintained,
• the risk of improper installation resulting from dimensional differences is reduced.

Such a solution is particularly beneficial for users who expect consistency with other braking system components and want to avoid experimenting with replacements that have different characteristics.

If you are planning a comprehensive repair or upgrade of the braking zone in your Audi and need other components from the same group, such as additional discs, pads, or brake lines, check the available parts in the Audi Brake discs category.

How to safely choose used braking system components

When selecting used discs for an Audi A4 B8 or A5 8T, it is worth paying attention to the condition of the working surface, evenness of wear, and the absence of cracks or deep scratches. It is also important to check whether the dimensional parameters fall within the minimum permissible values specified by the vehicle manufacturer. For users who want to approach the topic in an organized manner, a detailed checklist will be helpful.

Detailed tips on assessing the condition of discs, calipers, and ABS system components can be found in the article: Second-hand braking system: how to safely choose discs, calipers, and ABS?