Mercedes W166 Trunk Trim Rear Left N/S Water Drip Tailgate Cover A1666910300

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W166 Trunk Trim Rear Left N/S Water Drip Tailgate Cover is an original body component designed to protect the loading area and facilitate water drainage around the tailgate. Thanks to its precise fit to the body structure, it ensures stable mounting while helping to maintain order and aesthetics in the rear part of the vehicle. It is a practical solution for users who want to maintain the factory look of the tailgate after a repair or replacement of a damaged part.

Specifications and technical data

• SKU: A1666910300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1666910300
• Substitutable numbers: A1666910300, A 166 691 03 00
• Location on the vehicle: Rear, Left
• Category: Boot & Hatch Lids

Purpose and function of the component

The described cover is part of the Tailgates and rear parts group and has been designed specifically for installation in the rear left part of the body. Its tasks include:

• covering the inner edge of the tailgate on the left side,
• organizing the contact zone between the tailgate and the body,
• supporting controlled water drainage from the area around the tailgate,
• protecting against the accumulation of dirt in critical areas.

Thanks to this component, the rear part of the vehicle maintains a consistent, factory look, and the tailgate structure is better protected against daily wear and tear.

Body fitment and installation

The cover has been prepared for installation in the rear – left side of the vehicle area, which facilitates the identification of the correct installation location. The design provides for cooperation with factory mounting points in the body, making the installation process orderly and predictable for a service center or a body and paint shop.

The component is intended for Mercedes W166 series vehicles, which allows for maintaining compatibility with the body line, tailgate geometry, and other rear body components. Such a fit reduces the risk of stress, squeaking, or improper adhesion of the cover after installation.

Characteristics of the used component

The product comes from the category of used parts, which is a beneficial solution for drivers looking for an economical repair of the rear body zone while maintaining the manufacturer's original specifications. Choosing such a component allows you to:

• maintain visual consistency with other interior and body elements,
• preserve the original geometry and edge routing of the tailgate,
• reduce repair costs compared to new parts.

This type of cover works well both for post-accident repairs and for replacing worn or damaged elements resulting from years of operation.

Application in service practice

The Mercedes W166 Trunk Trim Rear Left N/S Water Drip Tailgate Cover is particularly useful in situations where the inner part of the tailgate has been damaged, mounts have been deformed, or there is a need to restore the full functionality of the rear loading zone. In service practice, this element:

• facilitates the correct routing of upholstery edges and seals,
• helps limit the ingress of water and dirt into the trunk interior,
• supports the maintenance of proper trim rigidity in the tailgate area.

By using an original component, you can maintain the structural consistency of the rear body, which is important both for user comfort and for the future resale of the vehicle.

Expanding the rear body repair

If you are planning a comprehensive repair or upgrade of the tailgate area in your Mercedes and need other elements from the same group, such as interior covers, finishing panels, or additional tailgate moldings, check the available parts in the Mercedes Tailgates and rear parts category.

To better plan service work on the vehicle, it is also worth taking care of the efficiency of the cooling system, especially during periods of high temperatures – practical tips and a discussion of the advantages of using used components can be found in the guide "Summer heat vs. cooling system: used radiators and fans as a guarantee of savings".