Mercedes GL X166 Rear Door Window Glass Glazing Tinted AS3 Left N/S A1667352510

Mercedes GL X166 Rear Door Window Glass Glazing Tinted AS3 Left N/S is a factory-original side window designed for installation in the rear left door of this model. The AS3 standard tinted glass provides increased optical comfort for passengers and reduces interior heating, while remaining fully compliant with homologation requirements. This is the ideal solution for users who expect consistent fitment, solid build quality, and aesthetics in line with the original body design.

Specifications and technical data

• SKU: A1667352510
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1667352510
• Substitutable numbers: A1667352510, A 166 735 25 10
• Location on the vehicle: Rear, Left
• Category: Car Glass

Purpose and fitment

The presented window has been designed specifically for the rear left body section of the Mercedes GL X166 generation. Its placement in the rear driver-side door guarantees correct geometry, the appropriate curvature radius, and compatibility with factory guides, seals, and the window lifting mechanism. As a result, this component can be installed as a direct replacement for damaged glass without the need for modifications to the bodywork or door mechanics.

Characteristics of AS3 tinted glass

The window belongs to the Car windows category and is manufactured to the AS3 standard, which signifies a higher level of tinting compared to front windows. This type of glass:

• limits the penetration of sunlight into the rear of the cabin, improving passenger travel comfort,
• reduces interior heating, which relieves the air conditioning system during summer conditions,
• increases the level of privacy in the second row of seats and the cargo area,
• supports the consistent, elegant look of the side body line characteristic of the Mercedes brand.

AS3 tinted glass is particularly beneficial in vehicles with large glass surfaces, such as the Mercedes GL X166, where sun control is essential for user comfort.

Benefits of using original Mercedes glass

Choosing glass dedicated to a specific vehicle model translates into a number of practical advantages. In the case of the rear left tinted window for the Mercedes GL X166, these are primarily:

• precise fit with the door frame and factory seals, which minimizes the risk of leaks and unwanted wind noise,
• preservation of the original styling line and a uniform level of tinting across all side windows,
• compatibility with the standard window lifting mechanism, which facilitates installation and subsequent operation,
• maintenance of safety parameters specified by the vehicle manufacturer.

The component in used condition represents a reasonable compromise between cost and functionality, allowing for the restoration of full performance and aesthetics of the side body section without the need to invest in a new component.

Practical application and installation

The rear left tinted window for the Mercedes GL X166 is suitable for both post-accident repairs and the replacement of mechanically damaged glass (cracks, scratches, breakage). Thanks to the factory profile, the installation process is orderly and predictable for an experienced body and glass repair shop. In practice, this means:

• the ability to use existing mounting points and guides,
• no need for edge adjustments or interference with the door structure,
• preservation of the correct operation of the window lifting mechanism after replacement.

For the end user, this translates into stable window operation in daily use and an aesthetic vehicle appearance after the repair is completed.

Expansion of the Mercedes window system

If you are planning a comprehensive repair or upgrade of the side glazing area in your Mercedes and need other elements from the same group, such as side door windows, trunk windows, or additional body windows, check the available parts in the Mercedes car windows category.

More about used windows and parts

When choosing elements in used condition, it is worth knowing reliable information about their durability, safety, and cost-effectiveness. To better understand how to evaluate such components and separate facts from common myths, read the article Used car parts: Myths and facts you need to know. This is a practical addition to your knowledge when making decisions about purchasing windows and other components for your Mercedes.