Mercedes W166 Rear D Pillar Top Trim Cover Panel Right O/S A1666930300

Mercedes W166 Rear D Pillar Top Trim Cover Panel Right O/S is an original interior trim component designed for the right side of the rear bodywork. It belongs to the Linings, decorative strips and trims group, allowing you to aesthetically restore the factory finish of the D-pillar and maintain a consistent cabin appearance. It is a practical solution for users who want to replace a missing or damaged cover in an orderly and technically correct manner.

Specifications and technical data

• SKU: A1666930300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1666930300
• Substitutable numbers: A1666930300, A 166 693 03 00
• Location on the vehicle: Rear, Right
• Category: Trim

Purpose and vehicle placement

The presented cover is dedicated to installation in the rear right part of the body, on the D-pillar. This placement means that the component is responsible for the aesthetic and functional finishing of the side interior area near the trunk and rear window. A properly selected trim allows for maintaining the continuity of the upholstery line, reducing the visibility of structural elements, and improving the overall aesthetics of the cabin.

Technical and functional characteristics

The D-pillar cover has been designed as a factory component for Mercedes vehicles, which translates into a precise fit to the body geometry and compatibility with mounting points. The element belongs to the finishing group, so its task is to:

• cover the pillar structure and seat belt mounts or upholstery,
• maintain a consistent visual line of the interior,
• reduce the risk of unwanted looseness and rattling in the rear part of the body.

Thanks to its factory design, the cover works in harmony with other side panels and upholstery, which facilitates installation and subsequent service removal, e.g., during bodywork or when routing installations in the rear of the vehicle.

Condition of the element and practical application

The product is offered as a used part, which is a cost-effective solution for users looking for an original component at a reasonable price while maintaining a factory fit. This type of element is particularly useful in situations such as:

• replacement after mechanical damage or upholstery disassembly,
• replacing missing panels after body and paint repairs,
• restoring interior aesthetics in vehicles used intensively, e.g., in fleets.

Choosing an original D-pillar cover allows you to avoid fitment issues typical of non-OEM parts and ensures visual consistency with other interior panels.

Benefits of using an original D-pillar cover

Using a factory trim in the rear right part of the body brings a number of practical benefits. The most important include:

• secure fit to the body structure – the element is designed for a specific model, with no modifications required,
• maintaining the original character of the interior, which is important both aesthetically and for the potential resale of the vehicle,
• easier installation thanks to factory mounting points and the intended geometry of the panel.

The D-pillar cover is an essential addition to the rear of the cabin, contributing to the impression of completeness and quality of the interior finish.

Expanding the interior trim in the Mercedes W166

If you are planning a comprehensive repair or modernization of the rear interior trim area in your Mercedes and need other elements from the same group, such as covers, overlays, or additional strips, check out the available parts in the Mercedes Linings, decorative strips and trims category.

To better assess when choosing an original, used pillar cover is more beneficial than a replacement, it is worth reading the practical tips described in the article 5 reasons why a used OEM part is a better choice than a replacement, where specific examples and criteria for selecting finishing parts are discussed.