Mercedes-Benz S-Class W221 Rear Bumper Carrier Support Cross Member A2216100020

Mercedes-Benz S-Class W221 Rear Bumper Carrier Support Cross Member is a factory-made structural body component designed for installation in the rear of the vehicle. It is responsible for reinforcing the bumper zone, improving impact force distribution, and providing stable mounting for other rear body components. This is a practical solution for users who want to restore the correct geometry and functionality of the rear bumper in their Mercedes.

Specifications and technical data

• SKU: A2216100020
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2216100020
• Substitutable numbers: A2216100020, A 221 610 00 20, BG
• Location on the vehicle: Rear
• Category: Bumpers & Reinforcements

Purpose and function in the vehicle

The rear bumper reinforcement beam operates in a critical area of the body, responsible for:

• transferring impact loads in the rear of the vehicle,
• providing stable support for the bumper cover,
• maintaining the proper structural rigidity of the body on the transverse axis,
• ensuring correct alignment of rear body zone components.

Thanks to its dedicated fit for the W221 series, the component works with factory mounting points, which helps maintain the original geometry of the rear body and facilitates installation without the need for modifications.

Benefits of using an original reinforcement beam

Using an original bumper reinforcement in a Mercedes W221 allows for maintaining the parameters specified by the vehicle manufacturer. In practice, this means:

• secure fit to factory mounting holes,
• consistency with the design of the rear bumper and associated components,
• maintaining the deformation characteristics intended by the manufacturer during an impact,
• easier quality control of the installation during post-accident repairs.

This solution is particularly beneficial for bodywork and structural repairs, where it is essential to precisely recreate the factory body line and maintain proper bumper alignment with other panels.

Vehicle placement and service application

The beam is designed for installation in the rear of the vehicle, in the bumper zone. It is suitable for both post-accident repairs and for replacing worn or deformed structural components. It enables:

• restoration of proper support for the rear bumper,
• elimination of issues with uneven cover alignment,
• stable mounting of equipment associated with the rear body section.

Due to its factory origin and dedicated design for the W221 series, the beam serves as a practical base for the proper reconstruction of the rear body zone in service conditions.

Component condition and installation aspects

The offered reinforcement beam comes from the used parts group, which allows for economical repair while maintaining the original construction. Before installation, it is recommended to perform a standard inspection of the surface and mounting points, and to prepare the part for further body and paint work in accordance with service procedures. Thanks to its factory origin, the installation is based on existing mounting points, which promotes repair repeatability.

Compatibility and selection by OEM number

The selection of the correct bumper reinforcement for a specific version of the Mercedes W221 should always be verified based on the OEM number and vehicle data. In case of doubt, it is worth using tools for identification by VIN to confirm the compatibility of the component with the specific car configuration. For users who want to streamline the process of selecting parts by factory numbers, the following guide will be helpful: Guide: how to select the right car part by VIN and OEM number.

If you are planning a comprehensive repair or upgrade of the rear body zone in your Mercedes and need other elements from the same group, such as reinforcements, beams, or complete bumpers, check the available parts in the Mercedes Bumpers and reinforcements category.