BMW G31 Touring Side Window Glass Fixed Quarter ESG AS2 Rear Left N/S 7387463

BMW G31 Touring Side Window Glass Fixed Quarter ESG AS2 Rear Left N/S is an original body component designed for installation in the rear left section of the 5 Series estate. The ESG/AS2 glass type ensures adequate durability and compliance with safety standards, while the factory fit facilitates installation and maintains a consistent body appearance. It is a practical solution for post-accident repairs, replacing a damaged window, or completing the glazing in a Touring body.

Specifications and technical data

• SKU: 7387463
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7387463
• Substitutable numbers: 7387463, 51377387463
• Location on the vehicle: Rear, Left
• Category: Car Glass

Purpose and fitment

The presented glass is a fixed side window mounted in the rear section on the driver's side of the Touring body. The component is designed as factory glass for a specific generation of the BMW 5 Series estate, which translates to a proper fit with the body frame, seals, and trim strips. As a result, the original side line of the car and the correct glazing geometry are maintained after replacement.

The placement on the vehicle (rear, left side) is important for both safety and the comfort of rear-seat passengers – a correctly selected window reduces stress in the bodywork, minimizes wind noise, and supports the proper function of the seals.

ESG AS2 glass technology

Glass marked as ESG (tempered) is characterized by increased resistance to impact and thermal stress compared to standard non-tempered glass. In the event of damage, it shatters into small, less sharp fragments, which limits the risk of serious injury. The AS2 transparency class means that the glass meets the requirements for visibility and safety in side applications, in accordance with applicable homologation standards.

Thanks to the factory manufacturing technology, the glass maintains appropriate rigidity, dimensional stability, and compatibility with original mounting points. This is particularly important for installation in an estate body, where fixed side windows contribute to the rigidity of the entire rear structure of the vehicle.

Characteristics of the used component

As a used part, the glass comes from the dismantling of an original BMW vehicle, which allows for maintaining material and visual consistency with the other windows in the car. Such components are often chosen for post-accident repairs when the priority is to combine OEM quality with a reasonable purchase cost. Used factory glass usually fits better with the existing optical aging of the other windows than a new replacement, which limits differences in shade and reflections.

Choosing an original glass from the secondary market is also a way to reduce service costs without sacrificing the parameters specified by the vehicle manufacturer. For many BMW users, this is a rational compromise between quality and the budget allocated for body repair.

Application in body repair and restoration

The fixed rear left side window in the BMW G31 Touring is a component often replaced after side collisions, acts of vandalism, or mechanical damage during luggage loading. A correctly selected component allows for restoring:

• body tightness in the rear part of the vehicle,
• proper visibility for passengers and the driver,
• the factory look of the estate's side line,
• appropriate interior acoustics regarding wind noise.

For users planning a wider repair or modernization of the car's glazing, it may be useful to check other products in the BMW car windows category, which makes it easier to complete the entire set of elements for a single service visit.

Why consider an original used window

Original glass from dismantling is a solution eagerly chosen by workshops and users who are looking for a compromise between cost and quality. Many concerns regarding secondary market parts stem from repeated opinions rather than real experiences. If you want to better understand how to properly approach the purchase of second-hand components, check out the article Used car parts: myths and facts you need to know, where the most common doubts related to such products are discussed in detail.

In the case of side windows for BMW, it is crucial that the component is structurally compatible with the body, made using the technology intended by the manufacturer, and correctly installed. Meeting these conditions allows for restoring full functionality of the glazing without the need to reach for more expensive service solutions.