BMW 3 Series E46 Coupe Rear Gasket Vent Window Glass Inner Black 8252621

BMW 3 Series E46 Coupe Rear Gasket Vent Window Glass Inner Black is an original component from the Car Windows group, designed for installation in the rear body area. It ensures a tight fit for the hinged side window, stabilizes its position, and limits the penetration of noise and moisture into the cabin. The black color harmonizes with the factory BMW window trims and frames, maintaining a consistent body appearance.

Specifications and technical data

• SKU: 8252621
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8252621
• Substitutable numbers: 51368252621, 8252621
• Location on the vehicle: Rear
• Color: Black
• Category: Car Glass

Purpose and function in the bodywork

The presented gasket is dedicated to the rear part of the BMW 3 Series E46 Coupe body, where it is responsible for the proper sealing of the hinged side window. The component operates in a critical area where the glass meets the bodywork, which is why its proper fit is important for acoustic comfort, protection against water, and window stability while driving.

Thanks to a design compliant with factory BMW standards, the gasket maintains the correct geometry of adhesion to the glass and frame, which reduces the risk of rattling, looseness, or unwanted vibrations in the rear part of the cabin.

Construction, color, and fit

The gasket is made in a black finish, which allows for an aesthetic connection with the original window trim elements in the BMW 3 Series E46 Coupe. This color scheme is visually neutral and does not stand out against factory trims, ensuring that a consistent look of the side body line is maintained after installation.

The component is intended for installation in the rear part of the vehicle, at the point where the vent window meets the interior. A properly selected gasket profile facilitates its seating in the intended slot and cooperation with the window, which translates into stable glass retention and a reduction in air drafts at higher speeds.

Characteristics of the original BMW part

As a part originating from BMW, the gasket maintains factory dimensional and material standards, which promotes precise fitment to the E46 Coupe body. Original components from the Car Windows group are designed for long-term interaction with the door frame and glass, which is especially important in areas exposed to temperature changes and weather conditions.

The used condition means that the component comes from dismantling but retains the functionality necessary for further operation. For many BMW E46 users, this is a reasonable compromise between repair costs and maintaining the original vehicle specification.

Practical application and benefits of installation

Installation of this gasket is particularly recommended when symptoms appear in the rear part of the body such as:

• water or moisture ingress in the area of the rear side window,
• air noise at higher speeds in the area of the hinged window,
• looseness or unstable seating of the vent window.

Replacing it with an original component allows you to restore the factory level of tightness and improve acoustic comfort in the rear of the cabin. It is also a way to maintain a consistent look of the side body line without the need to use replacements with uncertain fitment.

Original used parts and car value

In the case of models such as the BMW 3 E46 Coupe, the use of original components from the window and gasket group is important not only for daily use but also for the future resale of the vehicle. Maintaining consistency with the factory specification is often appreciated by buyers who pay attention to the quality of repairs performed. If you want to better understand the impact of original used components on the value of a car, see the article Original used parts and resale price – how not to lose?.

Related elements from the BMW window group

If you are planning a comprehensive repair or upgrade of the side window area in your BMW and need other elements from the same group, such as additional gaskets, window trims, or mounting frames, check the available parts in the BMW Car Windows category.