Mercedes GL X166 Rear Door Outer Window Frame Trim Cover Left N/S A1666700187

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes GL X166 Rear Door Outer Window Frame Trim Cover Left N/S is an original body component from the Doors and door panels group, designed for installation on the rear left side. This is a practical solution for users who want to restore the factory look of the side body area and maintain the stylistic consistency of the entire Mercedes GL X166 vehicle. The used component allows for an economical, yet technically correct repair of a damaged window frame.

Specifications and technical data

• SKU: A1666700187
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1666700187
• Substitutable numbers: A1666700187, A 166 670 01 87
• Location on the vehicle: Rear, Left
• Category: Doors & Door Skins

Purpose and function of the component

The described outer window frame trim is designed for installation in the rear left part of the body, within the second-row passenger door. It is responsible for the aesthetic finishing of the window edge, as well as for the correct guidance of the seal and stable seating of the window in the door frame.

By maintaining the factory geometry and profile, the component ensures:

• correct adhesion to the door panel,
• proper alignment of the side body line,
• consistent appearance with other window trims and fittings.

Benefits of using the original trim

Using the original outer window frame trim in a Mercedes GL X166 allows you to maintain compliance with the manufacturer's factory standards. This means:

• precise fit to the door and window structure,
• preservation of factory gaps and body lines,
• easier installation compared to replacements with uncertain geometry.

A used component from original production is a good choice for post-accident repairs, bodywork corrections, and when replacing worn or damaged trims, where functionality and compliance with the vehicle's design are the priority.

Installation in the rear left part of the body

The trim is designed for installation in the rear left zone of the vehicle, which is important for both correct fitment and operational safety. Proper seating of the component within the door affects:

• stable window guidance in the frame,
• correct interaction with door seals,
• reduction of unwanted wind noise while driving.

For optimal results, it is recommended that installation be performed by a person with experience in working with body components from the Doors and door panels group, which facilitates maintaining the correct positioning and pressure of the trim against the window and door panel.

Used condition and service application

The component comes from disassembly, which allows for a cost-effective restoration of the efficiency and appearance of the side body part. The used outer window frame trim is particularly useful in situations where:

• mechanical damage to the frame has occurred as a result of a collision or impact,
• the original element was deformed during previous repairs,
• visual matching to other door components is necessary.

Choosing an original component from the secondary market allows you to maintain the characteristic body line of the Mercedes GL X166 without the need to use non-factory solutions.

Expanding repairs within the Mercedes door area

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other components from the same group, such as panels, reinforcements, or additional trims, check out the available parts in the Mercedes Doors and door panels category.

Practical service tips

When replacing the outer window frame trim, it is worth paying attention to the condition of the seals, guides, and the window itself. Proper preparation of the mounting surfaces and checking the door alignment relative to the body reduces the risk of subsequent leaks and unwanted noises while driving. For drivers interested in a broader approach to the operation and repair of vehicle components, the guide article When is it worth replacing an alternator with a used one: a practical guide for drivers may be helpful, as it shows how to consciously use parts from the secondary market in everyday car maintenance.