Mercedes W212 Door Side Green Window Glass AS2 Front Left N/S A2127251310

Mercedes W212 Door Side Green Window Glass AS2 Front Left N/S is an original glass from the Car windows category, designed for installation in the front left door of E-Class W212 generation models. The green glass in the AS2 standard provides comfortable protection against solar radiation and a consistent look with the vehicle's factory glazing, which is particularly important for professional body repairs.

Specifications and technical data

• SKU: A2127251310
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2127251310
• Substitutable numbers: A2127251310, A 212 725 13 10
• Location on the vehicle: Front, Left
• Color: Green
• Category: Car Glass

Purpose and fitment

The presented glass is a component designed for installation in the front left door of Mercedes E-Class W212 vehicles. The vehicle placement is factory-defined, ensuring that the shape, bending radii, and edge lines are perfectly matched to the original door frame, guides, and window regulator mechanism. Such fitment reduces the risk of leaks, excessive glass stress, and issues with the window lift operation.

Glass characteristics and performance parameters

The glass is made of tempered glass in the AS2 standard, which means properly selected light transmittance and compliance with homologation requirements for side windows. The green tint improves driving comfort by reducing interior heating and limiting glare, while maintaining the characteristic look of factory Mercedes glazing.

Choosing the right side window is important not only for aesthetics but also for functionality – the appropriate thickness and profile of the glass affect:

• proper cooperation with seals and guide rails,
• reduction of cabin noise,
• stable operation of the window lifting and lowering mechanism.

Benefits of using an original used glass

Choosing a used side window for a Mercedes W212 allows you to combine repair cost control with maintaining the manufacturer's original specifications. A dismantled part, coming from the same model line, ensures dimensional and material compatibility, which is particularly important for the precise fitting of doors, seals, and frames.

If you are considering whether it is better to choose new or used parts for body repairs, it is worth reading the analysis of costs and durability in the article Car parts – new or used? We compare costs, quality, and durability, which helps you consciously choose a service strategy for your specific budget and expectations.

Body repair application and safety

Replacing the side window in the front driver's side door is important for both comfort and vehicle safety. A properly selected glass:

• ensures proper visibility in the side zone,
• maintains cabin tightness against water and wind,
• contributes to the structural rigidity of the door as intended by the manufacturer.

Using components that comply with factory specifications is particularly important in premium vehicles, where body construction and interior acoustics are designed with high precision. Car windows in such models play an important role in acoustic insulation and maintaining proper thermal comfort.

Repair expansion – other windows for Mercedes

If you are planning a comprehensive repair or upgrade of the side glazing zone in your Mercedes and need other components from the same group, such as rear side windows, passenger door windows, or additional quarter glass, check the available parts in the Mercedes car windows category.