Audi A6 C8 Underbody Panel Reinforcement Cross Member Center Rear 4K0803145E

The Audi A6 C8 rear underbody shield cross brace is an original structural component designed for the rear of the vehicle body. As part of the Brackets, Mountings, and Assembly Parts group, it stabilizes the central section of the underbody shield, improving the rigidity and integrity of the entire system. A used OEM component allows for a technically correct repair without compromising the vehicle's factory geometry.

Specifications and technical data

• SKU: 4K0803145E
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K0803145E
• Substitutable numbers: 4K0803145E, 4K0 803 145 E
• Location on the vehicle: Rear
• Category: Mounts, Brackets & Hardware

Purpose and Function of the Component

The rear underbody shield cross brace in the Audi A6 C8 generation operates in the central rear zone of the vehicle body. Its function is to:

• stiffen the mounting of the underbody shield in the rear of the car,
• provide a stable support point for the shield elements,
• reduce vibrations and unwanted play in the rear area of the vehicle,
• maintain the correct position of the shield relative to the supporting structure.

This ensures the underbody remains better protected from dirt and external factors, and the entire rear zone maintains structural integrity in line with the manufacturer's design.

Construction and Fit for Audi A6 C8

The component has been specifically designed for the Audi A6 C8 platform, which translates to precise fitment to factory mounting points. This means that:

• the mounting spacing matches the original holes in the rear of the vehicle body,
• the brace's geometry is consistent with the shape of the central underbody shield,
• no modifications or adaptations are necessary when the correct car model is selected.

As part of the assembly group, the brace works in conjunction with other brackets and mountings in the rear zone, forming a cohesive support system for the underbody shield.

Benefits of Using an Original Brace

Using the original cross brace in the Audi A6 C8 allows for the preservation of manufacturer-specified parameters. In practice, this means:

• stable mounting of the underbody shield in the rear of the vehicle,
• reduced risk of noise resulting from play or vibrations of the shield elements,
• maintenance of proper underbody protection in the rear area,
• easier disassembly and reassembly during servicing.

A used OEM component is a sensible choice for collision repairs, replacing damaged mountings, or restoring the full functionality of underbody shields after wear and tear.

Application in Repairs and Upgrades

The rear underbody shield cross brace is suitable for both standard repairs and more extensive rebuilds of the rear of the vehicle body. It can be used for, among other things:

• replacing damaged mounting elements of the underbody shield,
• restoring the factory shield system after a collision,
• comprehensive renovation of the rear underbody zone.

As a part from the Brackets, Mountings, and Assembly Parts category, it is an important complementary element for recreating the original construction in an Audi.

If you are planning a comprehensive repair or upgrade of the underbody area in your Audi and need other elements from the same group, such as brackets, supports, or additional braces, check the available parts in the Audi Brackets, Mountings, and Assembly Parts category.

Used OEM Component vs. Repair Cost-Effectiveness

Using a used, original cross brace can significantly reduce repair costs while maintaining proper assembly quality. This solution is particularly beneficial for vehicles used intensively, where a sensible balance between price and durability is important.

If you want to better plan repairs or modifications to your car using second-hand components, it's worth reading the guide on our blog: Audi with Second-Hand Parts – Tuning and Repairs Without Quality Loss.