Rear Window Mercedes ML W166 Trunk Lid Glass Window Tinted Black AS3 A1667400257

Rear Window Mercedes ML W166 Trunk Lid Glass Window Tinted Black AS3 is an original body component designed for installation in the rear part of the trunk lid. The AS3 tinted glass improves driving comfort, while the elegant black edge finish harmoniously blends with the vehicle's body lines. This is a practical solution for drivers who want to maintain a consistent look for their vehicle while ensuring the functionality of the rear window.

Specifications and technical data

• SKU: A1667400257
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1667400257
• Substitutable numbers: A1667400257, A 166 740 02 57
• Location on the vehicle: Rear
• Color: Black
• Category: Car Glass

Technical characteristics and intended use

The offered window belongs to the Car Windows category and is dedicated to installation in the rear part of the vehicle, specifically in the trunk lid. The design, tailored to the ML W166 series body, ensures proper fitment to the lid frame and compatibility with factory mounting and sealing elements. The AS3 tinted glass reduces light transmission and improves thermal comfort inside the cabin, which is particularly noticeable on sunny days.

The black border of the window creates an aesthetic line with other body elements and also facilitates correct seating in the seal and lid frame. Its placement in the rear of the vehicle makes this component significant for both rear visibility and the structural rigidity of the lid.

Function, safety, and comfort of use

The tinted rear window performs several key functions in daily operation:

• reduction of heat buildup in the cargo area and the rear part of the cabin,
• reduction of glare from the headlights of vehicles behind,
• increased privacy for passengers and transported cargo,
• maintaining the proper rigidity of the trunk lid.

The AS3 glass type signifies an increased level of tint compared to standard windows, which translates into higher travel comfort, especially on longer journeys. At the same time, adequate clarity is maintained in the rearview mirror's field of vision, which supports safe maneuvering.

Condition, fitment, and installation

The component comes from a used vehicle, which allows for maintaining the factory fitment to the Mercedes ML W166 body. The original trunk lid rear window is designed to work with factory hinges, actuators, the wiper, and the lock, ensuring that the functionality of the entire lid assembly is preserved after proper installation.

When replacing the window, it is recommended to:

• use appropriate adhesives and primers intended for automotive glass,
• check the condition of seals and mounting elements,
• verify the correct closing and operation of the lid after installation is complete.

Professional installation allows you to fully utilize the properties of the tinted glass and avoid leaks or stresses within the lid area.

Application in restoration and modernization of the ML W166

The trunk lid rear window is often replaced after mechanical damage or as part of a comprehensive body restoration. For models from years close to youngtimers, using original, used components allows for maintaining the vehicle's consistent character and optimizing repair costs. If you are planning to refresh your Mercedes or another car from a similar production period, it is worth checking out the guide how used parts help rejuvenate youngtimers from the years 1998–2012, where practical modernization scenarios using dismantled parts are described.

Selection of other glass and body elements

When repairing the rear part of the vehicle, there is often a need to replace other windows or elements related to the trunk lid as well. To maintain visual and technical consistency, it is worth selecting components within the same product group. For this purpose, it will be helpful to browse the offer in the category Second life of a youngtimer – how used car parts rejuvenate cars from the years 1998–2012, where you will find additional information on selecting glass and body parts for premium class vehicles.