BMW E92 M3 Roof Moulding Left N/S Railing Trim Covering Gutter Strip Black

BMW E92 M3 Roof Moulding Left N/S Railing Trim Covering Gutter Strip Black is an original body component from the Doors and door panels group, designed for installation on the left side of the roof. Precise fitment and the Le Mans Blau Metallic - 381 paint finish ensure visual and technical consistency with the factory body line of the BMW 3 Series E92.

Specifications and technical data

• SKU: 8045379
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8045379
• Substitutable numbers: 51138045379, 8045379, BG
• Location on the vehicle: Left
• Color: Le Mans Blau Metallic - 381
• Category: Doors & Door Skins

Purpose and function of the roof moulding

The roof moulding plays an important role in the area where the roof meets the side of the body, closing the body line and tidying up the edge adjacent to the doors and side windows. Using the correct component on the left side ensures proper edge alignment, reduces the risk of debris entering the gaps, and helps maintain the stability of seals and panels.

In the case of the BMW 3 Series E92, the roof moulding is also a significant visual detail – its profile and length are matched to the characteristic coupe line, allowing the body to maintain a cohesive, dynamic shape.

Le Mans Blau Metallic - 381 color

The applied Le Mans Blau Metallic - 381 paint is a distinctive, dynamic shade of blue, often found in versions with a sportier character. Using a moulding in this color allows for an aesthetic replacement of the component without the need for additional painting, provided that the other body panels are in the same color code.

Thanks to the factory metallic finish, the surface of the moulding interacts well with light reflections on the roof and doors, which improves the visual perception of the entire side section of the body.

Body fitment and installation

The moulding has been designed specifically for the BMW E92 body, taking into account the roof geometry, pillar angles, and window line path. Proper profiling facilitates installation at factory mounting points and allows for uniform gaps relative to the doors and other panels.

Placement on the left side of the vehicle eliminates the need for adapting universal solutions, which translates into stable seating of the component and reduces the risk of stress within the bodywork during operation.

Characteristics of the used product

The item comes from the used BMW parts segment, which allows for economical repair or replacement of a missing moulding while maintaining the original specification. Choosing a component from dismantling is a solution that is beneficial both in terms of cost and compatibility with the factory body structure.

Before installation, it is recommended to perform a standard verification of the paint surface and mounting points to adapt the installation method to the current condition of the roof and adjacent panels.

Application in the door and door panel zone

As an element from the Doors and door panels group, the roof moulding works with the upper edge of the door, window frames, and seals, affecting the tightness and aesthetics of the side of the body. A properly selected moulding helps maintain an even transition line between the roof and the doors, which is important both during post-collision renovation and when replacing individual body components.

If you are planning a comprehensive repair or upgrade of the door zone in your BMW and need other elements from the same group, such as skins, reinforcements, or additional mouldings, check the available parts in the BMW Doors and door panels category.

Technical support and knowledge about OEM parts

When selecting BMW body components, it is worth using reliable sources of knowledge regarding the construction and differences between individual model generations. Materials comparing solutions used in older and newer designs, including differences in original parts and their specifications, can be helpful.

To expand your knowledge about the role of OEM components in maintaining the vehicle's character, you can refer to the article Classic Mini vs modern MINI – differences and OEM parts, which discusses how the selection of original elements affects the consistency of the structure and the car's properties.