Ford Focus Mk3 Rear Side Quarter Window Glass AS3 Left N/S BM51-A297B01-A

Ford Focus Mk3 Rear Side Quarter Window Glass AS3 Left N/S is an original component from the Car Windows group, designed for installation in the rear part of the bodywork on the driver's side. Thanks to its factory-fit design, it ensures a consistent vehicle appearance, correct glazing geometry, and stable seating in the bodywork, which is important for both driving comfort and safety.

Specifications and technical data

• SKU: BM51-A297B01-A
• Mark: Ford
• Condition: Used
• OEM Part Number: BM51-A297B01-A
• Substitutable numbers: BM51-A297B01-A, BM51A297B01A
• Location on the vehicle: Rear, Left
• Part type: Rear Quarter Window
• Category: Car Glass

Purpose and vehicle placement

The presented glass is dedicated to installation in the rear part of the bodywork on the left side, in the side glazing area behind the doors. This placement contributes to:

• illuminating the rear passenger cabin,
• maintaining the continuity of the side body line,
• proper structural rigidity in the rear pillar area. The appropriate matching of the shape and curvature of the glass to the Ford Focus Mk3 bodywork reduces stress in the body and minimizes the risk of leaks after installation.

Technical characteristics of AS3 glass

The glass marked with the AS3 class belongs to the group of windows with an increased level of tinting, used in the rear zone of the vehicle. This type of glass provides:

• better protection against excessive interior heating,
• reduction of glare for rear passengers,
• a more private character for the rear part of the cabin. At the same time, adequate transparency is maintained, allowing for safe observation of the surroundings by passengers and compliance with homologation requirements for windows installed in the rear part of the vehicle.

Original origin and fitment

The glass comes from the Ford offer, which means it is a component designed specifically for the body geometry of the Focus Mk3. Its original origin translates into:

• precise fit with the window frame and seals,
• compliance with factory mounting points and bonding systems,
• maintaining uniform glass optics relative to other windows in the vehicle. Thanks to this, the installation process is predictable for the service center, and the risk of fitment issues or leaks is limited compared to random aftermarket replacements.

Condition of the component and practical application

The offered glass is a used component, which in practice means the possibility of an economical vehicle repair while maintaining the manufacturer's original specifications. This type of solution is particularly beneficial for:

• post-accident repairs of the rear bodywork,
• point damage (cracks, chips, scratches),
• restoring the completeness of the glazing after disassembly or bodywork intervention. Choosing an original used window allows you to maintain a consistent vehicle appearance and preserve performance parameters similar to those installed at the factory.

Selection by OEM number and technical support

When selecting a rear side window for a Ford Focus Mk3, it is crucial to verify compatibility using the OEM number and vehicle data. To facilitate this process, it is worth using the practical tips described in the article Guide: how to choose the right car part by VIN and OEM number, where the method of verifying parameters and a list of questions worth asking the seller are discussed step by step. If you care about making an informed choice regarding original dismantled parts and want to learn the arguments in favor of such a solution compared to cheap replacements, the material Why original dismantled parts fit better (and last longer) than cheap equivalents?, which discusses practical differences in fitment and durability, will be helpful. If you are planning a comprehensive repair or upgrade of the side glazing zone in your Ford and need other components from the same group, such as side door windows, fixed rear windows, or additional glazing elements, check the available parts in the Ford Car Windows category.