Window Seal BMW G20 G21 Front Door Right O/S Inner Gasket 7407420

The Right Front Door Window Seal for BMW G20 G21 is an original part from the Protective and Decorative Mouldings group, designed for installation on the right side of the body. It ensures a watertight window seal, reduces wind noise, and protects the door interior from moisture, supporting the proper operation of the window regulator.

Specifications and technical data

• SKU: 7407420
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7407420
• Substitutable numbers: 7407420, 51337407420
• Location on the vehicle: Front, Right
• Category: Body Mouldings & Trims

Seal Purpose and Function

The presented inner window seal is dedicated to the front right door of BMW G20/G21 models. The component works in direct contact with the window, stabilizing its movement within the guide and limiting the ingress of water and contaminants into the door interior.

Thanks to its precise profile and fit to the door frame shape, the seal helps maintain an appropriate level of acoustic comfort in the cabin, as well as supports the anti-corrosion protection of the door structure.

Construction and Fit for BMW G20/G21

The seal is factory-molded for the specific geometry of the BMW G20/G21 front right door, which translates to:

• correct adhesion to the door frame and window edges,
• stable seating in the original mounting points,
• maintenance of the correct window guide geometry throughout its entire operating range.

Its original BMW origin ensures compatibility with factory door trim elements, the window guide, and the regulator mechanism, without the need for additional modifications.

Condition, Installation, and Service Application

This part is from the used parts category, allowing for an economical replacement of a damaged or worn seal while maintaining the original manufacturer's specifications. In service practice, such a replacement is recommended, among others, when:

• leaks appear and water enters the door interior,
• increased cabin noise occurs at higher speeds,
• mechanical damage to the seal edges or its deformation occurs.

Installation is performed in the place of the factory seal, using existing mounting points. With a correctly performed replacement, there is no need to interfere with the door structure or the window regulator mechanism.

Benefits of Using an Original Seal

Using the original right front door seal in a BMW G20/G21 maintains the structural integrity of the body and predictable window behavior in the guide. This solution is particularly beneficial for accident repairs, door replacements, or restoring factory acoustic comfort.

If you are planning a comprehensive repair or upgrade of the door area in your BMW and need other parts from the same group, such as covers, trims, or additional mouldings, check the available parts in the BMW Protective and Decorative Mouldings category.

Additional Support for Part Selection

When working with original, used body parts, it is advisable to use solutions that allow for assembling a larger number of components in one place – especially for major repairs of doors, windows, or upholstery. To better plan such service activities and learn about the benefits of a One-Stop-Shop approach, read the article Comprehensive Sourcing: From Engine to the Smallest Clip – How to Assemble Used Car Parts in One Place?.