BMW F45 F46 Quarter Window Front Left N/S Triangle Glass AS2 Glazing 7375181

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW F45 F46 Quarter Window Front Left N/S Triangle Glass AS2 Glazing is a precisely fitted body component designed for installation in the front left section of the vehicle. The original glass construction with the AS2 marking ensures the appropriate level of light transmission and compliance with homologation requirements, while the used condition of the product allows for an economical yet functional replacement of damaged glazing. This is a solution for users who expect factory-fit and mounting stability within the vehicle body.

Specifications and technical data

• SKU: 7375181
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7375181
• Substitutable numbers: 7375181, 51377375181, 2579129, 51372579129
• Location on the vehicle: Front, Left
• Category: Car Glass

Purpose and body fitment

The presented triangular quarter window has been designed specifically for installation in the area of the front left pillar and door frame in BMW F45 series models. Its placement in the front part of the vehicle on the driver's side means that the component works with seals, trim, and the door frame, creating a tight and stable connection with the bodywork.

Thanks to the factory edge profile, the glass sits correctly in the mounting socket, which reduces the risk of stress, rattling, or leaks during operation. Proper fitment to the body geometry translates into maintaining the original structural rigidity in the front part of the cabin.

Technical characteristics of the AS2 glass

The AS2 marking indicates glass with controlled light transmission, intended for use in the side parts of the body. This type of glass provides:

• adequate visibility in the driver's side field of view,
• maintenance of required passive safety parameters,
• optical consistency with the other windows in the vehicle.

The triangular shape of the quarter window stabilizes the glazing line in the front part of the body, supporting the operation of the main door glass and seals. Precisely profiled edges facilitate correct seating in the frame and cooperation with factory mounting elements.

Benefits of using original BMW side glass

Choosing an original quarter window for the BMW F45 allows you to maintain the technical and visual consistency of the vehicle's entire glazing. In practice, this means:

• factory fitment to the shape of the pillar and the front left door,
• proper cooperation with existing seals and trim,
• reduction of the risk of air turbulence and noise in the cabin,
• maintenance of a uniform window line on the driver's side.

The used component from the Car Windows group represents a reasonable compromise between repair costs and maintaining the original structural parameters of the body. This is particularly important for post-accident repairs or replacing a damaged window triangle without interfering with other door components.

Application in the repair and modernization process

The front left triangular quarter window will prove useful both for standard replacement of a damaged element and for comprehensive reconstruction of the front part of the body. Thanks to the preservation of the factory shape and optical parameters, the original functionality of the driver's side area can be restored without the need to modify the door structure.

If you are planning a comprehensive repair or modernization of the side glazing area in your BMW and need other elements from the same group, such as side door windows, additional quarter windows, or other body glazing, check the available parts in the BMW Car Windows category.

How to effectively source original used components

When replacing a side window, it is worth planning the entire scope of work within the bodywork to limit the number of service downtimes and match all components in one process. A One-Stop-Shop approach can be helpful, allowing you to select glazing, body parts, and other components necessary for the repair in one place.

To better plan your purchases and avoid accidentally choosing low-quality replacements, it is worth reading the guide on sourcing original used parts – details can be found in the article "Comprehensive supply: From the engine to the smallest clip – how to source used car parts in one place?".