Audi TT FV Brake Caliper Wheel Brake Unit Housing Rear Left N/S 8V0615423F

Audi TT FV Brake Caliper Wheel Brake Unit Housing Rear Left N/S is an original braking system component designed for installation on the driver's side of the rear axle. Thanks to Audi's factory design, this used caliper ensures proper cooperation with the brake disc, pads, and wheel mounting, which translates into stable, predictable braking and correct vehicle handling. This is a solution for drivers who want to maintain braking system consistency with factory specifications without having to resort to replacements of unknown origin.

Specifications and technical data

• SKU: 8V0615423F-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8V0615423F
• Substitutable numbers: 8V0615423F, 8V0 615 423 F
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and vehicle positioning

The presented caliper is designed to work on the rear axle, on the left side of the vehicle. This positioning is important both for the geometry of the braking system and for the correct routing of lines and control cables. Choosing the correct mounting side is crucial for:

• maintaining even braking force between the left and right sides,
• proper operation of the piston mechanism and guide pins,
• trouble-free installation in factory mounting points.

As a result, the caliper works with other system components in accordance with Audi's design assumptions, which is particularly important during dynamic driving in the TT model.

Construction and function of the Audi TT brake caliper

The original Audi brake caliper is responsible for precisely pressing the pads against the disc during braking, converting brake fluid pressure into mechanical force. The design provides for:

• stable mounting to the steering knuckle or a dedicated bracket,
• guiding the pads in a way that limits their uneven wear,
• maintaining adequate body rigidity under load.

Such a solution allows for maintaining repeatable braking performance and reducing vibration and noise, which affects driving comfort and safety. Using the original Audi design minimizes the risk of compatibility issues with other system components.

Benefits of using an original, used caliper

Choosing a used Audi brake caliper is a reasonable compromise between costs and maintaining factory performance parameters. This type of component allows you to:

• reduce brake system repair expenses compared to a new part,
• maintain the original braking characteristics,
• limit the risk of mismatching, typical for some aftermarket replacements.

For many Audi TT users, this is a way to perform an economical yet technically correct rear axle repair, especially during comprehensive brake system maintenance.

Application in service practice

This brake caliper will work well both for standard replacement of a worn component and for larger service works involving the rear axle. It can be used in situations where the current caliper shows:

• seizing of the piston or guide pins,
• uneven pad wear on the left side,
• leaks within the body or connections.

Selecting an original caliper for the Audi TT facilitates the mechanic's work, shortens installation time, and reduces the risk of needing additional modifications.

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 brackets, mounts, or complete caliper units, check the available parts in the Audi brake calipers and brackets category.

How to safely choose used brake calipers

When selecting a used caliper, it is worth paying attention to compatibility with the body version, brake system type, and mounting side. It is also important that the component comes from a reliable source and has been properly verified for leaks and body condition. If you want to better understand how to optimally combine savings with safety, check out the article Brake calipers under the microscope: How to effectively reduce brake system repair costs by choosing proven recycled parts, where you will find practical tips on choosing original, used components.

Additional practical advice on completing the entire system – from discs and calipers to the ABS system – can also be found in the guide Second-hand braking system: how to safely select discs, calipers, and ABS?, which serves as a useful checklist when planning larger service works.