Audi TT FV Rear Brake Caliper Brake Electric Unit Left N/S 5Q0615405CT

Audi TT FV Rear Brake Caliper Brake Electric Unit Left N/S is an original component from the Brake calipers and brackets group, designed for installation on the rear left axle of the vehicle. The electric control of the caliper ensures precise cooperation with the braking system and driver assistance systems, which translates into stable, repeatable brake performance in daily operation.

Specifications and technical data

• SKU: 5Q0615405CT
• Mark: Audi
• Condition: Used
• OEM Part Number: 5Q0615405CT
• Substitutable numbers: 5Q0615405CT, 5Q0 615 405 CT
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and function in the braking system

The presented caliper is designed to operate on the rear left side of the vehicle, where it is responsible for evenly pressing the pads against the disc and maintaining stable operating pressure. The electric control of the mechanism allows for precise dosing of braking force and proper cooperation with the vehicle's electronic safety systems. Thanks to its dedicated placement on the vehicle, this component ensures proper operating geometry, which reduces the risk of uneven wear of pads and discs and supports predictable vehicle behavior during emergency braking and in daily city traffic.

Benefits of using an original Audi caliper

Using an original caliper in an Audi TT translates into a number of practical advantages:

• maintaining the factory operating parameters of the braking system,
• proper fitment to the bracket, disc, and pads specified by the manufacturer,
• consistent cooperation with the electric brake control and onboard systems,
• reduced risk of installation problems due to compliant mounting design. An original caliper from this group of parts is a particularly beneficial solution for repairs where maintaining factory braking characteristics and predictable system operation in the long term is a priority.

Component characteristics and practical application

As a component mounted on the rear left axle, the caliper operates in demanding conditions – it is exposed to variable loads, road debris, and temperature fluctuations. The design provided by the manufacturer, Audi, allows for stable operation under these conditions, and the electric control facilitates integration with modern driver assistance systems. In practice, the installation of this caliper is recommended in situations where symptoms such as uneven braking of the rear axle, locking of the left wheel, improper operation of the electric parking brake, or visible mechanical damage to the caliper body occur. Replacing it with an original component allows for restoring the correct operating characteristics of the system without the need to modify other components.

Selection and inspection of a used caliper

The item comes from a group of used parts, which requires a conscious approach to selection and installation. Before installation, it is worth verifying the condition of the working surfaces, the freedom of movement of the guide pins, tightness, and the correct operation of the electric mechanism. Such an approach allows for effectively utilizing the potential of the part and reducing the risk of subsequent service downtime. If you want to check step-by-step what to pay attention to when buying a used brake system component, the following guide will be helpful: Second-hand braking system – how to safely select discs, calipers, and ABS. This is a practical checklist that facilitates the assessment of the technical condition of components such as the presented caliper.

Expanding the modernization of the Audi braking system

If you are planning a comprehensive repair or modernization of the braking zone in your Audi and need other elements from the same group, such as additional calipers, brackets, or mounting elements, check the available parts in the Audi brake calipers and brackets category.