Quarter Side Window Mercedes S212 Rear Left N/S Side Glazing Tinted Glass AS3

Mercedes W212 Left Rear Quarter Glass AS2 is an original part from the Automotive Glass group, designed for installation in the rear left part of the body. The triangular side window improves body rigidity, visibility, and the aesthetic of the vehicle's side line, ensuring consistency with the factory finish of the Mercedes E-Class W212 model.

Specifications and technical data

• SKU: A2126701512
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2126701512
• Substitutable numbers: A2126701512, A 212 670 15 12, BG
• Location on the vehicle: Rear, Left
• Category: Car Glass

Purpose and Body Fitment

The presented glass is designed as a rear left body element, in the form of a characteristic triangular quarter glass. This placement affects:

• stability and rigidity of the body's side area,
• proper interior lighting in the rear cabin,
• maintenance of the original window line in the Mercedes W212.

Thanks to its construction compliant with the AS2 standard, the glass meets the light transmission and safety requirements typical for automotive side windows in premium vehicles.

Technical Characteristics of the AS2 Triangular Glass

The AS2 triangular glass in this model serves as a fixed side glazing, cooperating with the main rear door glass. Its technical parameters include, among others:

• rigid, triangular geometry adapted to the W212 body profile,
• appropriately selected glass thickness and structure,
• use of optical grade glass intended for side windows.

A component configured in this way allows for proper fitting with seals, the body frame, and other glass elements, which is crucial for reducing noise, vibrations, and unwanted leaks.

Benefits of Using Original Mercedes Glass

Choosing original side glass for the Mercedes W212 translates into a number of practical advantages:

• Factory Fitment – maintaining the correct geometry and bending radii, which facilitates installation and minimizes the risk of leaks.
• Visual Consistency – identical glazing line on the left and right sides, with no differences in tint or glass reflections.
• Usability Safety – the glass meets the requirements for side windows, which is important for daily operation and potential technical inspections.

An element from the Automotive Glass category of this type is particularly important for accident repairs, replacing damaged glazing, or restoring the vehicle to its factory specification.

Condition, Origin, and Practical Application

The offered glass is a used part, which allows for combining original origin with a more favorable repair cost compared to new parts. For workshops and individual users, this means the possibility of quickly replacing damaged glazing while maintaining the high quality of workmanship typical for the Mercedes brand.

If you want to better understand how to consciously choose parts from the secondary market and what to look for when buying, it is worth reading the guide: Used Parts – Your Guide to the Best Deals in the Automotive Store. You will find practical tips on selecting used components, including glass elements.

Expanding Repairs in the Mercedes Side Glass Area

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 additional side windows, fixed quarter glasses, or supplementary glazing, check the available parts in the Mercedes Automotive Glass category.

To learn how the availability of original used parts affects vehicle downtime in the workshop, you can also use the material: Immediate Availability of Car Parts vs. Repair Time – How Used OEM Parts Shorten Workshop Stays?, which discusses the practical aspects of quick repairs using used OEM parts.