Mercedes R171 C-Pillar Column Roof Trim Obsidian Black Left N/S A1717940128

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes R171 C-Pillar Column Roof Trim Obsidian Black Left N/S in Obsidian Black Metallic is an original body component designed for Mercedes convertible models. The part belongs to the Convertible roofs, cars and parts category and has been engineered to precisely integrate with the roof structure and the side body line on the left side of the vehicle.

Specifications and technical data

• SKU: A1717900319-OB1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1717900319
• Substitutable numbers: A1717900319, A 171 790 03 19, A1717940128, A 171 794 01 28
• Location on the vehicle: Left
• Color: Obsidian Black Metallic - 197
• Category: Hardtops, Roof Panels & Parts

Purpose and function of the component

The left roof pillar is responsible for the stable guidance and aesthetic finish of the side section of the convertible roof structure. This component:

• completes the body line in the rear part of the cabin on the driver or passenger side,
• supports proper sealing of the roof zone against the body,
• ensures a visually consistent transition between the roof and the rear part of the bodywork.

Thanks to the factory fitment for the Mercedes platform, the correct assembly geometry is maintained, which facilitates bodywork, painting, and service tasks.

Color and visual fitment

The finish in Obsidian Black Metallic allows for aesthetic integration of the element into the body of vehicles painted in the same color code. Metallic black effectively masks minor shade differences after painting adjacent panels and helps achieve a consistent visual effect in the roof zone.

In the case of post-accident repairs or convertible restoration, using an original pillar in this color limits the scope of necessary painting work and facilitates restoring the vehicle's factory appearance.

Assembly characteristics

The component is intended for installation on the left side of the vehicle, in the rear part of the roof structure. The original mounting geometry facilitates:

• proper alignment with the roof and adjacent body panels,
• maintaining correct gaps and body lines,
• reducing the need for additional modifications during installation.

Due to its factory origin, the part works well with original seals, fittings, and other components of the Mercedes convertible roof.

Condition and benefits of using an OEM used part

The offered roof pillar is a used original component, which in practice means maintaining factory geometry, mounting points, and compatibility with the body structure. Compared to non-factory replacements, this reduces the risk of fitment issues and shortens workshop time.

Choosing original used body components is particularly beneficial for convertible repairs, where the precision of roof fitment has a direct impact on tightness, acoustic comfort, and the durability of the entire system.

Expert support and part selection

To better understand the advantages of using original body components in cars of this brand and to plan repairs consciously, it is worth reading the article Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?. You will find practical tips on component selection and service cost optimization without compromising on quality.

If you are planning a comprehensive repair or upgrade of the roof zone in your Mercedes and need other elements from the same group, such as coverings, seals, or additional structural profiles, check the available parts in the Convertible roofs, cars and parts Mercedes category.