Mercedes W221 Pillar B Interior Trim Cover Top Right O/S Black A2216900425

Mercedes W221 Pillar B Interior Trim Cover Top Right O/S Black is an original interior trim component designed for installation on the right side of the cabin. The dark, black finish ensures stylistic consistency with the factory interior design, while the precise fit facilitates installation and reduces the risk of unwanted looseness. A used part from this group is a sensible choice for post-accident repairs, replacing damaged linings, or restoring the interior aesthetics to a near-factory condition.

Specifications and technical data

• SKU: A2216900425
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2216900425
• Substitutable numbers: A2216900425, A 221 690 04 25
• Location on the vehicle: Right
• Color: Black
• Category: Trim

Purpose and function of the component

The described upper B-pillar cover is part of the side interior trim in the Mercedes S-Class W221 generation. It is responsible for aesthetically covering the pillar structure on the right side, while also helping to organize the wiring routed through this area. A correctly selected and installed component reduces the risk of rattles and resonances that may occur when using ill-fitting replacements.

Color scheme and interior matching

The black color of the cover allows for a harmonious combination with typical interior configurations in the Mercedes W221, where dark shades of upholstery and panels dominate. As a result, the element integrates well with the dashboard, door panels, and other pillar linings, creating a visually cohesive layout. The uniform color also facilitates the use of the part during partial repairs, when only a fragment of the trim on one side of the vehicle is being replaced.

Vehicle placement and installation aspects

The cover is designed for installation on the right side of the B-pillar, in the upper section, between the front and rear doors. Such placement requires maintaining proper geometry and rigidity so that the component works well with door seals and other linings. In practice, installation involves correctly seating the clips and guides into the factory mounting points, which minimizes the risk of subsequent looseness and squeaks during operation.

Use of a pre-owned part

Choosing a used B-pillar cover for the Mercedes W221 is a frequently used solution for body and interior repairs after collisions or when replacing mechanically damaged elements. An original component from dismantling retains its factory geometry and material structure, which promotes proper fitment with adjacent panels. It is a practical alternative to expensive new parts, especially when the priority is to restore functionality and aesthetics at controlled service costs.

Integration with other trim elements

The B-pillar cover works in conjunction with door panels, the headliner, and lower pillar linings, creating a cohesive side cabin trim system. Proper fitment of this part is important not only visually but also functionally – it affects the stable routing of seals, correct door closing, and the reduction of noise penetrating the interior. Original trim helps maintain the acoustic and visual comfort characteristic of a Mercedes.

If you are planning a comprehensive repair or upgrade of the interior trim zone in your Mercedes and need other elements from the same group, such as covers, decorative strips, or trim panels, check the available parts in the Mercedes linings, decorative strips and trim category.

If you are preparing a wider body repair after a collision and want to better plan the use of parts from dismantling, an article describing good practices for selecting such components may be helpful – you can find it here: Bodywork and chassis – post-accident repairs using parts from dismantling.