Mercedes-Benz S-Class W221 Trunk Boot Centre Stiffener Support A2216400619

Mercedes-Benz S-Class W221 Trunk Boot Centre Stiffener Support is an original structural component designed for W221 series models, providing stable support and proper rigidity for the rear of the bodywork. Thanks to its factory geometry, it works perfectly with other body components, which translates into precise fitment, predictable body behavior, and correct operation of the trunk lid. This solution is particularly important for post-accident repairs or professional vehicle structure restoration.

Specifications and technical data

• SKU: A2216400619
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2216400619
• Substitutable numbers: A2216400619, A 221 640 06 19, KZ
• Location on the vehicle: Front
• Category: Other Interior Parts & Accessories

Purpose and function of the component

The Mercedes-Benz S-Class W221 Trunk Boot Centre Stiffener Support is responsible for stiffening the rear zone and properly distributing the loads acting on the vehicle's body structure. This component:

• stabilizes the trunk lid mounting area,
• supports the maintenance of the vehicle's factory rear geometry,
• limits unwanted sheet metal deformation during operation,
• facilitates the correct alignment of body gaps and joint lines.

As a result, after replacement, it is possible to achieve a consistent, aesthetic appearance of the rear of the vehicle and maintain the proper operation of the trunk lock and hinges.

Compatibility and fitment for the Mercedes-Benz S-Class W221

The offered stiffener has been designed specifically for the W221 platform, which means that its shape, mounting points, and profile are consistent with factory design specifications. In practice, this translates into:

• the possibility of installation in place of the original component without structural modifications,
• maintaining the proper rigidity of the rear body section,
• easier alignment of the trunk lid relative to the fenders and bumper,
• consistency with other structural body components.

Such fitment is particularly important in the case of repairs performed according to the manufacturer's guidelines, where compliance with factory technical documentation is essential.

Installation characteristics and service application

The Trunk Boot Centre Stiffener Support is primarily used for:

• post-accident repairs of the rear body section,
• straightening and reconstruction of the trunk structure,
• body restoration in premium class vehicles,
• restoring factory reference points for body and paint work.

The placement of the component in the vehicle's structural area requires precise installation; however, using an original component significantly facilitates the work – the mounting points are unambiguous, and the shape of the stiffener allows for quick adjustment to the existing structure.

Condition and benefits of choosing an original used part

The offered stiffener is a used part, which in practice means a favorable compromise between the cost of repair and maintaining original Mercedes-Benz structural quality. Compared to replacements or aftermarket parts:

• it ensures compliance with factory body geometry,
• minimizes the risk of problems with trunk lid fitment,
• facilitates maintaining proper body gaps and lines,
• helps preserve the vehicle's value after repair.

This solution is particularly attractive for workshops specializing in the Mercedes brand and for users who expect repairs close to the manufacturer's standard.

Expansion of service work and additional materials

If you are planning a comprehensive repair or upgrade of the rear body structural zone in your Mercedes and need other elements from the same group, such as reinforcements, brackets, or additional structural profiles, check the available parts in the Other Mercedes category.

For more advanced tuning or comparative projects, it is also worth expanding your knowledge of solutions used in other premium segment brands – differences in body construction, drivetrains, or brakes are well illustrated in the article Audi RS vs other models – what is hidden under the hood and chassis?, which may be helpful when planning further modifications and selecting parts with appropriate parameters.