Audi R8 42 Gen 1 Rear Bumper Deformation Impact Beam Left N/S 420807553B

The Left Rear Bumper Reinforcement Bar for Audi R8 42 Gen 1 is an original structural body component designed for installation on the rear left side of the vehicle. It ensures proper load transfer during impact, stabilizes the rear bumper, and helps maintain the correct geometry of the rear body section in the first-generation Audi R8.

Specifications and technical data

• SKU: 420807553B
• Mark: Audi
• Condition: Used
• OEM Part Number: 420807553B
• Substitutable numbers: 420807553B, 420 807 553 B
• Location on the vehicle: Rear, Left
• Part type: Bumper Reinforcement Beam
• Category: Bumpers & Reinforcements

Purpose and Function of the Component

The presented Left Rear Bumper Deformation Bar for Audi R8 42 Gen 1 belongs to the Bumpers and Reinforcements category and is a key structural component of the rear body. Its purpose is to controllably absorb energy in the event of a rear-end collision, as well as to provide stable support for the bumper and mounting elements.

Its placement on the vehicle is rear – left side, meaning the component works in conjunction with the left part of the rear bumper and adjacent mounting points in the body. This maintains structural integrity and predictable vehicle behavior in emergency situations.

Construction and Fit for Audi R8 42 Gen 1

The bar has been specifically designed for the first-generation Audi R8 42 platform, maintaining factory mounting points and geometry. This means:

• precise fit to the original mounting holes in the body,
• dimensional compatibility with the factory rear bumper,
• correct interaction with other reinforcements and structural elements of the rear of the vehicle.

As a component within the bumper reinforcement group, the bar serves a load-bearing and deformation function – it is designed to absorb some of the impact energy, limiting the transfer of excessive forces to further body sections.

Condition, Origin, and Benefits of Using a Used Part

The offered bar is part of the used original Audi parts group. Such components are often chosen for accident repairs and body reconstructions because they allow for the preservation of the factory crumple zone performance characteristics and proper bumper alignment.

Using an original left rear bumper reinforcement ensures, among other things:

• preservation of the designed rigidity of the rear body section,
• maintenance of predictable vehicle behavior under rear loads,
• easier installation due to factory mounting points and correct geometry,
• structural consistency with other elements of the bumper system.

Practical Installation Tips

When replacing the left rear bumper deformation bar in the Audi R8 42 Gen 1, it is recommended to:

• inspect the mounting points in the body for any potential deformations,
• check the bumper geometry after installation to achieve uniform gaps and proper alignment,
• have the installation performed by an experienced service center specializing in Audi body repairs, which facilitates the maintenance of factory safety parameters.

Selecting the correct part is aided by the manufacturer's marking and its assignment to a specific Audi R8 model and generation, allowing the part to be used as a direct replacement for the factory left rear reinforcement of the vehicle.

Other Audi Bumpers and Reinforcements

If you also need other Audi bumpers and reinforcements for your car, check out the Audi bumpers and reinforcements available in our store to select complete elements for body repair or reconstruction.

For drivers interested in the durability of engine accessories and the selection of appropriate replacement parts, a guide article may be useful – you can find more information in the material on the reliability of engine accessories in popular Mercedes-Benz C-Class and E-Class models, which discusses a practical approach to servicing and selecting components.