Mercedes W166 Rear Tailgate Boot Lid Left Electric Strut A1669803664

Mercedes W166 Left Rear Electric Tailgate Actuator is an original part from the Tailgate and Rear Hatch category, designed for precise operation at the rear of the vehicle body. It ensures smooth, controlled opening and closing of the tailgate, enhancing daily convenience and proper integration with the vehicle's factory electronics.

Specifications and technical data

• SKU: A1669803664
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1669803664
• Substitutable numbers: A1669803664, A 166 980 36 64
• Location on the vehicle: Rear, Left
• Category: Boot & Hatch Lids

Vehicle Application and Placement

The electric tailgate actuator is designed for installation on the rear left side of the vehicle body, in accordance with the factory design of the W166 model. It is responsible for assisting tailgate movement, stabilizing its position, and ensuring proper closing, which is important for both user comfort and the sealing and safety of the transported cargo.

Thanks to its dedicated placement on the vehicle, this component integrates with factory mounting points and the electrical system, facilitating installation and reducing the risk of improper fit with the bodywork.

Technical and Functional Characteristics

The actuator belongs to the group of body parts designated as Tailgate and Rear Hatch, meaning it is an integral part of the system responsible for tailgate operation. Its electric design allows for tailgate movement control via buttons within the vehicle or a remote control, and its appropriately selected operating parameters ensure repeatable, controlled movement without jerking.

Key functional features of this component include:

• dedicated application for the rear left side of the vehicle,
• integration with the factory tailgate opening and closing system,
• maintenance of the correct tailgate working geometry,
• possibility of use as a replacement for a worn or damaged actuator without modifying the body structure.

Original Origin and Item Condition

The presented actuator is from the Mercedes brand, ensuring adherence to factory manufacturing standards, compatibility, and material quality. Original origin is particularly important for moving and electrical components, where manufacturing precision translates to smooth tailgate operation and overall system durability.

The item is offered as used, allowing for an economical replacement while maintaining compatibility with the manufacturer's original solutions. For many users, this represents a sensible compromise between repair cost and keeping the vehicle in its original configuration.

Benefits of Using an Electric Tailgate Actuator

Using the correct actuator on the rear left side of the tailgate offers a range of practical benefits for daily vehicle use:

• Tailgate Operation Comfort – assisted opening and closing movement reduces the need for physical effort and improves ergonomics.
• Stable System Operation – appropriately selected actuator parameters help maintain the tailgate in its set position.
• Improved Electronic Integration – an original part facilitates proper communication with the vehicle's control modules.
• Hassle-Free Installation – fitting factory mounting points reduces replacement time and minimizes the risk of installation errors.

Compatibility with Other Mercedes Body Parts

If you are modernizing the rear of your vehicle or assembling the tailgate operating system in your Mercedes, it is worth considering other components related to this body area. If you need additional parts for tailgate operation, such as hinges, mounts, or other components that work with the opening system, check the available parts in the Mercedes Tailgate and Rear Hatch category.

For drivers interested in a broader approach to vehicle maintenance and repair, including informed choices about used parts, a practical guide on a key electrical system component may be helpful – find more information in the article When is it Worth Replacing an Alternator with a Used One: A Practical Guide for Drivers.