BMW F45 Window Quarter Side Door Glass Rear Left N/S AS3 7375183

BMW F45 Window Quarter Side Door Glass Rear Left N/S AS3 is an original body component from the Car windows group, designed for installation in the rear left door. It ensures proper interior illumination, structural integrity of the body, and compliance with the factory BMW styling line, which is important for both the safety and aesthetics of the vehicle.

Specifications and technical data

• SKU: 7375183
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7375183
• Substitutable numbers: 7375183, 51377375183
• Location on the vehicle: Rear, Left
• Category: Car Glass

Purpose and function in the BMW F45 body

The presented side window has been designed specifically for installation in the rear left door of the BMW F45 series. Its placement in the rear part of the body affects passenger comfort, side visibility, and the proper operation of door mechanisms. Using the correct body window allows for maintaining the structural and visual consistency of the entire side of the vehicle.

The AS3 marking indicates a specific type of glass used in the automotive industry, which translates into compliance with homologation requirements and compatibility with factory seals and door moldings. As a result, the window works with existing body components without the need for modifications.

Benefits of using an original side window

Using an original side body window in a BMW F45 brings a number of practical benefits:

• preservation of the factory geometry and side line of the vehicle,
• proper fit with the door frame and seals,
• stable operation of the door opening and closing mechanism,
• maintenance of proper lateral body stiffness,
• visual consistency with other windows in the vehicle.

Thanks to this, replacing a damaged window with an original part allows you to restore full door functionality and reduce the risk of unwanted noises, leaks, or problems with upholstery installation.

Characteristics of the used component

As a secondary market item, the side body window for the BMW F45 represents a reasonable compromise between repair costs and maintaining original OEM quality. A used window allows for cost savings while maintaining compliance with the vehicle's factory parameters. This solution is particularly beneficial for post-accident repairs, body and paint corrections, or restoring a car to full functionality after mechanical damage.

Selecting the right component from the Car windows group is important not only for appearance but also for acoustic comfort and protecting the interior from external factors. A properly fitted window minimizes the risk of fogging, leaks, and unwanted vibrations while driving.

Professional installation and fitment

The side body window intended for the rear left side of the vehicle is structurally prepared to work with the factory guides, seals, and door fittings of the BMW F45. It is recommended to entrust the installation to a specialized service center that will ensure:

• proper seating of the window in the door frame,
• correct pressure against seals and moldings,
• checking the operation of the opening mechanism if the window works with moving parts,
• leak testing after installation.

This approach allows you to fully utilize the advantages of the original component and ensure the durability of the repair in daily use.

If you are planning a comprehensive repair or upgrade of the side body area in your BMW and need other components from the same group, such as front door windows, rear door windows, or additional body windows, check the available parts in the BMW Car windows category.

Used windows and economical vehicle repair

Choosing a used side body window for the BMW F45 is a solution that allows you to optimize service costs without sacrificing the manufacturer's original specifications. For premium segment cars, this approach is often used in body repairs, especially when the priority is to maintain the factory look and performance parameters.

If you are interested in a broader context of using used components in premium cars, it is worth reading the analysis of market trends in the article Crisis in the new parts market? Why used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend in 2026, where the advantages of using original secondary market components are discussed.

For drivers who are also considering other used sub-assemblies and want to better understand the specifics of the second-hand parts market, the guide Used car parts for Mini Cooper – a way to style and savings may also be helpful, as it shows how to combine savings with attention to quality and safety.