Mercedes X166 C Pillar Trim Cover Rear Right O/S A1666900887

Mercedes X166 C Pillar Trim Cover Rear Right O/S is an original body component from the Doors and door panels group, designed for installation on the rear right side of the vehicle. It provides an aesthetic finish to the side of the body while ensuring stable mounting for upholstery and seals around the C-pillar. This is a practical solution for users who want to restore the factory look and functionality of the rear body section in their Mercedes X166.

Specifications and technical data

• SKU: A1666900887
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1666900887
• Substitutable numbers: A1666900887, A 166 690 08 87
• Location on the vehicle: Rear, Right
• Category: Doors & Door Skins

Purpose and function of the component

The described C-pillar trim cover has been designed specifically for the Mercedes X166 body and is mounted in the rear right body area. Its task is to cover the pillar structure, guide the seals, and organize the upholstery edges in the area of the rear doors and cargo space. A correctly selected component allows for maintaining the consistency of the body lines and reducing the formation of unwanted gaps and vibrations in this area.

Thanks to its factory fit, the cover works in harmony with other side panels, rear doors, and interior trim elements, which facilitates installation and subsequent vehicle operation.

Construction and body fitment

The Mercedes X166 C Pillar Trim Cover Rear Right O/S is a body component from the Doors and door panels group, prepared for installation in a specific location on the vehicle. The shape and mounting points are consistent with the factory body geometry, which allows for precise alignment with:

• the edge of the rear door on the right side,
• adjacent side panels,
• seals and upholstery elements in the C-pillar area.

Such fitment reduces the risk of leaks, rattles, or unwanted noises while driving, and also helps maintain a consistent stylistic line of the body.

Use in repairs and restoration

The component is particularly suitable for accident repairs, replacement of damaged side panels, or body restoration in a Mercedes X166. A used, original C-pillar cover allows for maintaining factory mounting parameters, which is essential for precise adjustment of gaps between doors and the body, as well as for restoring the original structural rigidity in this area.

The placement on the vehicle on the rear right side means that the part is dedicated to a specific position and is not a universal element – proper selection of the component in terms of the mounting side is crucial for correct fitment.

Benefits of using an original C-pillar cover

Choosing an original body component for the Mercedes X166 brings a number of practical advantages:

• maintaining compliance with the factory construction of the C-pillar and adjacent panels,
• easier installation thanks to the mounting points provided by the manufacturer,
• consistent appearance of the side body section on the rear right side,
• the ability to restore the original layout of seals and upholstery.

For users who care about the technical correctness of repairs and the aesthetics of the body, the use of such a component is a solution that allows for maintaining the standard characteristic of the Mercedes brand.

Condition and performance characteristics

The offered C-pillar cover is a used part, which in practice means that it comes from dismantling and may show signs of normal wear while maintaining the functionality required for further installation. This type of component is a good choice for repairs where maintaining the original body structure is important, while simultaneously optimizing costs compared to new parts.

Before installation, it is recommended to perform a standard verification of the mounting points and fitment to the specific vehicle, which is a typical procedure when working with body components from the Doors and door panels group.

Related Mercedes body components

If you are planning a comprehensive repair or upgrade of the side body zone in your Mercedes and need other elements from the same group, such as door panels, skins, or additional covers, check the available parts in the Mercedes Doors and door panels category.

To better choose a repair strategy and decide when it is worth reaching for original, replacement, or used parts, the guide article Original, replacement, or used – which car parts are the most cost-effective? may be helpful, where the differences in costs, quality, and fitment by OEM numbers are discussed.