BMW F90 G30 G31 Side Wing Mirror Triangle Seal Rubber Gasket Left N/S 7341021

BMW F90 G30 G31 Side Wing Mirror Triangle Seal Rubber Gasket Left N/S is a precision body component designed for installation on the left side of selected BMW 5 Series models. It is responsible for a tight and stable fit of the triangular mirror mount, reducing vibrations and protecting against the ingress of water and contaminants. By maintaining factory geometry, it serves as a functional service solution when replacing a damaged or worn seal.

Specifications and technical data

• SKU: 7341021
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7341021
• Substitutable numbers: 7341021, 51217341021
• Location on the vehicle: Left
• Category: Mirror Components

Purpose and function of the mirror triangle seal

The presented seal is a component from the Mirror components group, responsible for properly sealing the triangular side mirror mount on the driver's side. Its tasks include:

• limiting the ingress of water and moisture into the door interior and around the mirror mounting area,
• reducing wind noise in the area of the pillar and mirror at higher speeds,
• stabilizing the connection between the mirror and the door panel,
• protecting against dirt that can affect the durability of the mount.

Thanks to its fitment for a specific side of the vehicle, the seal ensures proper adhesion to the door surface and correct interaction with the triangular cover and the mirror housing.

Compatibility with BMW F90, G30, G31

The seal has been designed with the door and mirror construction of the BMW 5 Series G30/G31 and F90 generations in mind. This means that its shape, support points, and profile are consistent with the factory solution used by the manufacturer. In practice, this translates into:

• easier installation in place of the original component,
• maintaining the body lines and the aesthetics of the mirror-to-door connection,
• compatibility with the factory mirror triangle and mount.

The placement on the left side of the vehicle helps avoid errors when selecting parts and speeds up service work.

Characteristics of the used component

The offered seal comes from the secondary market, making it a cost-effective solution while maintaining original geometry and purpose. A used element of this type is particularly useful when:

• the existing seal is perished, deformed, or mechanically damaged,
• after removing the mirror, it is necessary to replace the seal to maintain tightness,
• maintaining the factory fit to the door and mirror triangle is important.

Choosing an original component from the secondary market allows you to maintain the structural integrity of the mirror zone without the need to use replacements with uncertain profiles.

The importance of a proper mirror triangle seal

A functional mirror triangle seal affects not only aesthetics but also the comfort and durability of the components inside the door. Proper sealing helps to:

• limit the risk of moisture affecting internal door components,
• reduce wind noise in the mirror area while driving,
• maintain the stability of the mirror mount over a long period of operation.

Replacing a worn seal with a properly fitted component is a simple way to improve acoustic comfort and protect the door zone from adverse external conditions.

If you are planning a comprehensive repair or upgrade of the side mirror zone in your BMW and need other elements from the same group, such as housings, glass, or mounts, check out the available parts in the BMW mirror components category.

When working on your vehicle, it is also worth taking care of the efficiency of the braking system – in selecting used components, our guide Second-hand braking system: how to safely choose discs, calipers, and ABS? will help you, where you will find a practical checklist when purchasing components from the secondary market.