BMW X3 E83 Side Fixed Glass Black Window AS3 Rear Left N/S SSG 3401817

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW X3 E83 Side Fixed Glass Black Window AS3 Rear Left N/S SSG is an original body component from the Car windows group, designed for installation in the rear left door. The triangular side glass improves door frame rigidity, contributes to acoustic comfort, and maintains the factory body line characteristic of the BMW X3 E83.

Specifications and technical data

• SKU: 3401817-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 3401817
• Substitutable numbers: 51363401817, 3401817
• Location on the vehicle: Rear, Left
• Color: Black
• Category: Car Glass

Purpose and fitment for BMW X3 E83

The presented triangular glass has been designed specifically for the rear left section of the BMW X3 E83 body. Thanks to its factory shape and precise profile, it ensures proper adhesion to the seals and stable seating in the door frame, which reduces unwanted wind noise and supports the correct operation of the opening mechanisms.

Proper fitment to the specific body model allows for maintaining a consistent appearance of the side window line, which is essential both for post-accident repairs and when replacing worn-out components with parts that meet the original specification.

Technical characteristics and construction

The AS3 triangular glass in the rear left section of the body is made of appropriately selected automotive glass, adapted for operation in variable operating conditions. The type of glass used provides the necessary resistance to stresses resulting from bodywork operation and daily vehicle use.

The black finish allows for an aesthetic connection with the factory seals and BMW door trims, ensuring the component blends well with the other windows and the body line. The triangular construction facilitates proper distribution of forces within the door frame, which is important for maintaining the tightness and stability of the entire side window set.

Function in the body and benefits of installation

The rear left triangular glass performs several important functions in the vehicle:

• complements the side glazed surface, improving visibility in the rear body area,
• supports the rigidity of the door structure and the stability of the window frame,
• contributes to reducing cabin noise by properly sealing the space between the pillar and the door,
• maintains the consistent, factory look of the side window line characteristic of the BMW X3 E83.

Using an original glass from this group allows for maintaining compliance with the vehicle's factory parameters, which is important for professional body and paint repairs and for restoring the original state of the body after mechanical damage.

Component condition and practical application

The offered glass belongs to the group of used parts, making it a cost-effective solution while maintaining the original geometry and fitment to the BMW body. This type of component is suitable both for replacing damaged glass after a collision and for repairs resulting from cracks, scratches, or leaks within the side door structure.

Selecting a triangular glass with the correct placement in the vehicle (rear, left side) minimizes the risk of installation problems and allows for efficient service work in a workshop or a specialized automotive glass service.

Repair expansion and additional information

If you are planning a comprehensive repair or upgrade of the side glazing area in your BMW and need other components from the same group, such as door glass, triangular inserts, or additional glass panels, check the available parts in the BMW car windows category.

To better plan service work and operating costs, it is worth familiarizing yourself with practical tips regarding components that are most frequently replaced in vehicles – the article TOP 10 most frequently replaced parts in your car will be helpful, containing specific advice for drivers who care about the technical condition of their vehicle.