Audi A6 A7 4G8 Brake Caliper Wheel Braking Unit Rear left N/S 4G0615403A

Audi A6 A7 4G8 Brake Caliper Wheel Braking Unit Rear left N/S is an original braking system component from the Brake calipers and carriers group, designed for installation on the rear left axle of Audi vehicles. This used OEM component ensures a proper fit with the suspension and braking system design, which translates into stable braking performance and predictable vehicle handling.

Specifications and technical data

• SKU: 4G0615403A-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 4G0615403A
• Substitutable numbers: 4G0615403A, 4G0 615 403 A
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and fitment

The presented caliper has been designed specifically for Audi A6 and A7 models of the 4G8 generation, intended for installation on the rear left side of the vehicle. This ensures compatibility with the geometry of the hub, brake disc, and brake lines, as well as the factory mounting points on the control arm and carrier. As a result, this component can be used both for standard replacement of a worn-out caliper and for brake system repairs following mechanical damage.

Technical characteristics of the caliper

As a part from the Brake calipers and carriers category, this component is responsible for evenly pressing the brake pads against the disc, stabilizing braking force, and maintaining the correct travel path of the brake pad. The design intended for operation on the rear axle accounts for the specific loads and distribution of braking forces in the Audi A6 and A7, which allows for maintaining the factory proportions between the front and rear of the vehicle.

A used brake caliper is a suitable choice in situations where the priority is to maintain the original braking characteristics while optimizing service costs. Its original Audi origin promotes compatibility with factory lines, carriers, and mounting elements, which facilitates installation in workshop conditions.

Benefits of using an original caliper

Using an original caliper on the rear left axle allows you to:

• maintain consistent braking system performance on both the left and right sides,
• preserve factory braking force distribution parameters on the rear axle,
• reduce the risk of issues with thread, line, and mounting compatibility,
• facilitate diagnostics and service thanks to compliance with manufacturer documentation.

For workshops and users, this means predictable installation time, no need for modifications, and the ability to directly compare the condition of the component with Audi service documentation. Stable operation of the piston and guide pins is crucial for even pad wear and maintaining proper braking efficiency over a long period of operation.

Application in service and brake system upgrades

The Audi A6 A7 4G8 Brake Caliper Wheel Braking Unit Rear left N/S will work well both for standard replacement of a worn-out element and for more extensive work on the rear axle – e.g., during the regeneration of the entire braking system, replacement of discs, pads, or flexible hoses. The used OEM component allows for maintaining consistency with other components, which is particularly important in cars equipped with advanced electronic stability control systems.

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 mounting brackets, check out the available parts in the Audi Brake calipers and carriers category.

Safe selection of used brake components

When choosing a used brake caliper, it is crucial to pay attention to compatibility with the model, vehicle placement, and the type of braking system used in the specific version of the Audi A6 or A7. Proper component selection helps avoid problems with installation, uneven braking, or accelerated wear of pads and discs.

To organize the verification and installation process, it is worth using practical tips regarding the purchase of used brake components – you will find them in the article Second-hand braking system: how to safely select discs, calipers, and ABS?, which discusses step-by-step how to assess the condition and select components based on real service needs.