Mercedes CLA C118 Side Glass Window Door Rear Left N/S Tinted AS3 A1187350300

Mercedes CLA C118 Rear Left Door Window Tinted AS3 is an original part from the Automotive Glass group, designed for installation in the rear left area of the body. Tinted AS3 glass improves driving comfort by reducing interior heating and increasing privacy for rear passengers.

Specifications and technical data

• SKU: A1187350300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1187350300
• Substitutable numbers: A1187350300, A 118 735 03 00
• Location on the vehicle: Rear, Left
• Category: Car Glass

Purpose and Fitment

The presented window is specifically designed for installation in the rear left door of Mercedes CLA C118 generation vehicles. Its placement in the rear of the vehicle on the driver's side ensures full compatibility with the factory door structure, seals, and guides, facilitating installation and maintaining body seal and proper geometry.

As a component from the Automotive Glass category, the window works with original lifting and lowering mechanisms, as well as factory seals, minimizing the risk of improper fit or unwanted noises during driving.

Characteristics of AS3 Tinted Glass

The AS3 designation indicates the use of tinted glass, which provides increased protection against solar radiation in the rear cabin. This type of window:

• reduces the amount of light entering the interior, improving travel comfort for rear passengers,
• limits the heating of upholstery and trim elements,
• increases privacy by making it more difficult to see into the vehicle's interior from the outside.

Tinted glass is particularly beneficial in cars used extensively in urban conditions and on longer journeys, where sun exposure is clearly noticeable.

Benefits of Using an Original Mercedes Window

Choosing an original side window for a Mercedes translates into a number of practical advantages:

• Factory Fitment – the window's geometry matches the CLA C118 body design, facilitating installation and ensuring proper operation of the window mechanism.
• Consistent Aesthetics – the tint shade and glass structure are matched to the other windows in the vehicle, maintaining a uniform styling line.
• Acoustic Comfort – the appropriate thickness and construction of the glass support cabin acoustic insulation, reducing airflow noise in the rear of the body.

As a used part, the window offers a sensible compromise between cost and functionality, allowing for the restoration of full door usability after a collision, mechanical damage, or vandalism.

Practical Application in Service

Replacing a side window in the rear left door is a typical service operation after parking damage, a broken window, or cracks resulting from stress. Using a dedicated part for the CLA C118 reduces workshop time and the need for additional adjustments to the window lifting mechanism.

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 windows, rear windows, or additional side glazing, check the available parts in the Mercedes Automotive Glass category.

New or Used Window – How to Choose?

When selecting a side window for a Mercedes, it is worth considering both the budget and expectations regarding durability and availability of the part in a specific tint variant. A used original component often provides a very favorable price-to-quality ratio, especially if you want to maintain factory optical parameters and match the other windows.

To better understand the differences between new and used parts, their cost-effectiveness, and their impact on vehicle operation, read the article: Car Parts – New or Used? Comparing Costs, Quality, and Durability.