Mercedes W212 Rear Door Side Window Glass Glazing Left N/S A2127351500

Mercedes W212 Rear Door Side Window Glass Glazing Left N/S is an original component from the Car windows group, designed for installation in the rear door on the driver's side. It ensures proper interior illumination, structural stability of the body, and a factory-compliant side line characteristic of the W212 generation Mercedes E-Class models.

Specifications and technical data

• SKU: A2127351500
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2127351500
• Substitutable numbers: A2127351500, A 212 735 15 00
• Location on the vehicle: Rear, Left
• Part type: Rear Side Window
• Category: Car Glass

Purpose and fitment for Mercedes W212

The presented rear side window has been designed specifically for the Mercedes W212 body, taking into account the geometry of the rear door on the left side. The appropriate edge profiling and correct glass thickness allow for secure seating in the guides and seals, which translates into stable operation of the lifting mechanism and tightness against water and noise.

Thanks to its factory origin, the glass maintains the correct tilt angle and bending radius, which is essential for proper adhesion to the seals and maintaining a consistent side line of the body. This solution is particularly important for post-accident repairs, where precise reproduction of the factory geometry is crucial.

Function, safety, and comfort of use

The rear side window in the door performs several key structural and functional roles:

• ensures adequate visibility for rear seat passengers,
• creates a protective barrier against external factors,
• stabilizes the door frame and seals, reducing vibrations and noise in the cabin,
• affects the aerodynamics of the side part of the body.

Using an original glass in a Mercedes W212 helps maintain factory acoustic and performance parameters, which is especially important in premium class cars where higher driving comfort is expected. A properly selected side window minimizes the risk of leaks, rattles, and unwanted sounds when opening and closing the door.

Characteristics of the used component

The offered glass is a used part, sourced from dismantling. Such OEM components are frequently chosen for body and paint repairs because they allow for visual consistency with other windows in the vehicle while reducing service costs. A used original glass is a solution that combines proper fitment with a more favorable repair budget compared to new aftermarket replacements.

Before installation, it is recommended to perform a standard inspection of the glass edges, the condition of the working surfaces, and the fitment to the door frame to ensure proper interaction with existing seals and the lifting mechanism in the specific vehicle unit.

Support in selection and repair cost optimization

Selecting the right side window for a specific body version and model year of the Mercedes W212 should be based on the vehicle's technical data and catalog numbers. In practice, this helps avoid installation problems and ensures full compatibility with the rear door on the left side. For users who want to better understand how to safely use the market for dismantled parts and how to realistically reduce service costs, the following guide will be helpful: Rising repair costs and the boom in used parts – how to save on car service?.

If you also want to consciously check the compatibility of the element based on manufacturer markings and technical parameters, it is worth reaching for practical tips from the article: Online parts shopping without risk – 5 ways to verify compatibility by OEM numbers, which also covers issues related to selecting components for Mercedes vehicles.

Repair expansion – other windows for Mercedes

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 front side windows, quarter glass, or additional door glazing elements, check the available parts in the Mercedes car windows category.