Mercedes S212 Rear Quarter Side Window Right O/S Side Glass AS3 A2126701612

The Mercedes S212 Rear Right Door Side Window Glass AS3 is an original body part from the Automotive Glass group, designed for installation in the rear right door. Thanks to its factory fit, it ensures proper glazing geometry, stability, and safe visibility in daily use. This is a practical solution for users who want to maintain the stylistic and technical consistency of their Mercedes.

Specifications and technical data

• SKU: A2126701612-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2126701612
• Substitutable numbers: A2126701612, A 212 670 16 12
• Location on the vehicle: Rear, Right
• Category: Car Glass

Intended Use and Body Fitment

The glass is specifically designed for installation in the rear right door, guaranteeing conformity with the body line and proper adhesion to seals and guides. The appropriate edge shaping facilitates installation in factory mounting points, and the correct profile minimizes the risk of stress during the window regulator's operation.

Original origin from the Mercedes brand means adherence to factory glass quality standards, which translates to predictable performance while driving, compatibility with door hardware, and a cohesive look for the entire side body section.

Technical Characteristics of AS3 Glass

The AS3 designation indicates a special type of glass used in automotive applications, adapted for demanding operating conditions. This type of glass is designed for:

• appropriate resistance to mechanical damage in daily use,
• dimensional stability across a wide temperature range,
• compatibility with factory guides and the window regulator mechanism.

This ensures the element maintains its proper performance parameters both in city driving and on longer journeys, without negatively impacting the comfort of the driver and passengers.

Condition, Functionality, and Service Application

The glass comes from the used parts circulation, which significantly reduces repair costs while maintaining original manufacturer specifications. This is a beneficial solution for:

• replacing damaged glass after a collision or vandalism,
• restoring full door functionality after body repairs,
• servicing fleet vehicles where the cost-to-quality ratio is important.

Choosing a used OEM part reduces the risk of fitment issues typical of cheaper aftermarket alternatives and simplifies workshop installation.

Benefits of Using an Original Side Window Glass

Using a factory original side window glass in the rear right door offers a range of practical benefits:

• Visual Consistency of the Bodywork – maintaining a uniform shade and character of the glazing on both sides of the vehicle.
• Proper Seal Interaction – reducing wind noise and the risk of leaks during driving.
• Stable Window Regulator Operation – less strain on the guides and window regulator due to the glass's correct geometry.

For workshops and private users, this means shorter installation times, a predictable final result, and no need for additional adjustments.

More Glass for Mercedes and Service Tips

If you are planning a comprehensive repair or upgrade of the side glazing area in your Mercedes and need other parts from the same group, such as front glass, rear glass, or other side windows, check the available parts in the Mercedes Automotive Glass category.

When planning more extensive service work, it's also worth considering the overall repair costs and how to optimize them – practical tips can be found in the article on saving on car service using used parts. Additionally, if you are interested in the impact of temperatures and operation on vehicle components, the guide on the cooling system and the role of used parts will be helpful for better planning future repairs.