Mercedes W177 Bumper Rear Trim Panel Covering Kosmos Cosmic Black Metallic - 191

Visual condition of the part

Possible scratches and paint chips – condition as shown in the product photos.

Mercedes W177 Bumper Rear Trim Panel Covering Kosmos Cosmic Black Metallic is an original body component designed for installation in the rear of the vehicle. Thanks to its factory-fit design, it ensures a consistent body line appearance and proper alignment with other bumper components. This is a practical solution for users who want to restore the aesthetics and functionality of their Mercedes' rear section following damage or wear.

Specifications and technical data

• SKU: A1778800500-KB
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1778800500
• Substitutable numbers: A1778800500, A 177 880 05 00
• Weight: 150
• Location on the vehicle: Rear
• Color: Kosmos Black Metallic - 191
• Category: Bumpers & Reinforcements

Characteristics and purpose of the component

The presented trim panel is part of the Bumpers and reinforcements group, specifically designed for installation in the rear of the body. As an original component for the Mercedes brand, it maintains the correct geometry, mounting points, and profile tailored to the W177 model line. Its placement in the rear zone means the element is responsible for both the aesthetic finish of the bumper and the protection of specific structural sections.

The Kosmos Cosmic Black Metallic - 191 color allows for consistency with the factory paint palette, which reduces the need for additional paint work or facilitates its execution. The properly selected weight of the component helps maintain the correct load distribution within the bumper, which is important for precise installation.

Benefits of using an original rear panel

Using an original trim panel in the rear body section provides a number of practical benefits:

• preservation of the factory bumper line and consistent body appearance,
• proper fitment to the mounting points in the W177 structure,
• easier installation thanks to the geometry intended by the manufacturer,
• reduced risk of improper gaps and stresses within the bumper area.

The component in used condition is a reasonable compromise between cost and functionality, especially in the case of post-accident or restoration repairs. For many premium car users, this is a way to maintain a high level of quality while keeping the service budget under control.

Color and visual matching

The finish in Kosmos Cosmic Black Metallic - 191 is characteristic of the Mercedes paint range and allows for a harmonious connection with other body elements in this color. The metallic structure of the paint provides an attractive visual effect in daylight and artificial light, which is significant for the overall perception of the vehicle's rear section.

For body shops and users assembling body parts themselves, the color and structural compatibility of the panel facilitates the matching process, limiting the scope of additional preparatory work.

Practical aspects of installation and operation

The rear bumper trim panel has been designed for installation in a specific body area, which translates into a predictable service process. The appropriate design supports stable seating in the bumper structure, and the properly selected weight helps maintain the factory parameters of the mounting system.

Choosing an original used component is particularly beneficial in situations where maintaining compliance with the vehicle's factory specifications is important, while at the same time optimizing repair costs is essential. This type of solution works well both in professional service centers and among conscious users who care about the technical condition of their Mercedes.

Expanding rear body zone repairs

If you are planning a comprehensive repair or upgrade of the rear bumper zone in your Mercedes and need other elements from the same group, such as reinforcements, additional covers, or lower moldings, check out the available parts in the Mercedes Bumpers and reinforcements category.

For a better understanding of current trends in selecting components for premium cars and the reasons why used original parts are becoming an increasingly popular choice, it is worth reading the article: Crisis in the new parts market? Why used originals for premium cars are the hottest trend in 2026.