Mercedes W166 Upper Panel D Pillar Trim Cover Rear Left N/S Black A1666930163

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W166 Upper Panel D Pillar Trim Cover Rear Left N/S Black is an original interior trim component designed for installation in the rear section of the vehicle body on the driver's side. The black, aesthetic surface ensures a consistent look with the factory finish, while the precise fit for this specific body generation guarantees stable mounting and proper alignment with adjacent upholstery elements.

Specifications and technical data

• SKU: A1666930163
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1666930163
• Substitutable numbers: A1666930163, A 166 693 01 63
• Location on the vehicle: Rear, Left
• Color: Black
• Category: Convertible Tops & Parts

Purpose and function of the component

The presented D-pillar cover has been designed specifically for the Mercedes W166 family of models as part of the rear body trim. Its placement in the rear-left area means the component is responsible for the aesthetic finish of the side passenger or cargo space and for covering the body structure.

The black color allows for harmonious integration with most factory interior configurations, which facilitates both post-accident repairs and the replacement of worn or damaged panels. As a result, this part is suitable for bodywork and paint jobs, interior restoration, and professional vehicle conversions.

Construction, installation, and fitment

The D-pillar trim panel is geometrically matched to the W166 body structure, which translates into predictable installation and repeatable mounting points. The design intended for the rear-left zone of the vehicle facilitates:

• restoring the factory trim line in the D-pillar area,
• achieving even gaps between adjacent upholstery elements,
• reducing unwanted vibrations and rattles resulting from poor panel fitment.

As a part from the Convertible soft tops and parts group, the element can work with other rear body trim components in the body versions provided by the manufacturer. This helps maintain the structural and visual consistency of the entire area.

Visual and functional characteristics

The black surface of the panel allows for a neutral, technical look that blends well with both light and dark interior configurations. This type of finish is practical for daily use because it:

• shows minor dirt less than light-colored upholstery,
• facilitates maintaining a uniform style in the rear part of the cabin,
• promotes maintaining a consistent interior character after replacing a single element.

The D-pillar panel also serves a protective function – it covers sensitive parts of the body structure and wiring running through this zone, which is important for both safety and vehicle durability.

Condition, origin, and service application

The offered element comes from a Mercedes vehicle and is a used part, making it an attractive solution for workshops, body shops, and individual users looking for an economical yet original alternative to new components. This type of part is suitable for:

• post-accident repairs in the rear-left body zone,
• interior restoration after mechanical damage or disassembly,
• restoring the factory look of the vehicle after modifications.

Choosing an original D-pillar trim panel allows you to maintain compliance with the vehicle's factory specifications, which is important for both user comfort and the future resale value of the car.

Expanding service scope and expert knowledge

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 additional trim panels, covers, or roof-area components, check out the available parts in the Convertible soft tops and parts Mercedes category.

When selecting used body and interior components, it is worth using the experience of the premium secondary market. A good reference point for service strategies for high-end cars can be an article describing the approach to servicing another premium brand – you can find it here: Luxury within reach – how to service a Porsche legend using proven used parts.