Ford Focus Mk3 Rear Quarter Glass Window Tinted AS3 Left N/S BM51-A297B01-F

Ford Focus Mk3 Rear Quarter Glass Window Tinted AS3 Left N/S is an original component from the Car windows group, designed for installation on the left side of the rear bodywork. The tinted glass improves driving comfort, reduces interior heating, and increases passenger privacy while maintaining the vehicle's factory character. This is a solution for users who want to maintain a consistent look for their car and ensure a secure, stable fit for the side body section.

Specifications and technical data

• SKU: 2010631
• Mark: Ford
• Condition: Used
• OEM Part Number: 2010631
• Substitutable numbers: BM51-A297B01-FF, BM51A297B01FF, 2010631, BM51-A297B01-F, BM51A297B01F
• Location on the vehicle: Rear, Left
• Part type: Rear Quarter Window
• Category: Car Glass

Purpose and body fitment

The presented window has been designed as a component mounted in the rear, left part of the body, which guarantees a proper fit to the body lines of the Ford Focus Mk3. The appropriate shape and edge profile allow for correct seating in the door or body frame, which translates into tightness and stability during vehicle operation. Thanks to the factory manufacturing standard, the window works with original seals and mounts, which facilitates installation and reduces the risk of improper fitment of the component with other body parts.

Characteristics of AS3 tinted glass

The AS3 marking indicates the use of glass with an increased level of tint, intended for the rear zones of the vehicle. This type of window:

• reduces the amount of sunlight reaching the interior,
• limits the heating of the rear part of the cabin,
• increases travel comfort for passengers in the back seat,
• improves the level of privacy and the aesthetics of the car's side profile. Tinted glass is both a practical and visual complement to the factory Ford styling, improving the perception of the entire body shape.

Function in body structure and safety

As an element from the Car windows group, the rear quarter glass plays an important role in the body structure – it stiffens the side of the body, ensures proper visibility, and works with sealing and guide systems. A correctly selected window helps maintain interior tightness, reduces wind noise, and affects acoustic comfort in the cabin. Original glass with the appropriate specification is also important from the point of view of passive safety – in the event of damage, it retains predictable properties, consistent with the standards provided for the given vehicle model.

Condition of the component and benefits of choosing a used part

The offered window is a used component, which allows you to combine the preservation of the original specification with a favorable level of repair costs. For many users, this is a reasonable compromise between quality and budget, especially for body repairs where compliance with factory workmanship counts. If you want to better understand why original second-hand components are increasingly chosen for vehicle service, it is worth reading the article Original used parts vs. car resale price – how not to lose?, which discusses the impact of such solutions on the later value of the car.

Expanding the glazing zone in your Ford

If you are planning a comprehensive repair or upgrade of the glazing zone in your Ford and need other elements from the same group, such as windshields, door windows, or additional side glazing elements, check the available parts in the Ford car windows category. In the context of the growing popularity of second-hand components, especially in the segment of brands with higher quality requirements, the blog material Crisis in the new parts market? Why used originals for premium cars are the hottest trend in 2026 may also be helpful, as it shows the broader market background for choosing used body and glazing components.