BMW F30 Roof Moulding Railing Gutter Trim Right O/S Liquid Blue Metallic - B40

BMW F30 Roof Moulding Railing Gutter Trim Left N/S Liquid Blue Metallic is an original body component from the Roof racks and rails category, designed for installation on the left side of the roof. Precise fitment and the distinctive Liquid Blue Metallic - B40 color ensure a visually and technically consistent replacement for the factory rail on your BMW 3 Series F30.

Specifications and technical data

• SKU: 2239973-LBL
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2239973
• Substitutable numbers: 2239973, 51132239973
• Location on the vehicle: Right
• Part type: Roof Rail
• Color: Liquid Blue Metallic - B40
• Category: Roof Racks & Cross Bars

Purpose and function of the roof moulding

The presented roof moulding serves as a structural and finishing element for the roof rail system in the BMW F30. Its placement on the left side of the vehicle ensures proper roof line alignment and provides stable support for accessories mounted on the rails, such as roof racks or specialized holders. Thanks to its design, which complies with factory BMW standards, the component maintains the correct geometry and rigidity, which translates into safe operation.

Color and visual fitment

The Liquid Blue Metallic - B40 color is a factory paint used in selected BMW F30 configurations, which is why the moulding serves as an aesthetic complement to the original body styling. The metallic paint coating ensures consistency with other body elements, and the properly matched shade minimizes visual differences when replacing a single component. This solution is particularly beneficial for post-accident repairs or localized roof restoration.

Technical characteristics and installation

The roof moulding has been designed as a component dedicated to a specific side of the vehicle, which facilitates installation and reduces the risk of incorrect fitment. The design provided by the manufacturer allows for the use of factory mounting points without the need to interfere with the roof structure. As a result, the replacement process is predictable, and after proper installation, the rail maintains the lines and gaps consistent with the original body design.

Condition of the component and service application

The moulding comes from the secondary market, making it an attractive alternative to new components while maintaining original BMW specifications. Such elements are frequently used in professional body and paint shops as well as workshops specializing in the BMW brand, where both technical compliance and repair cost optimization are important. Choosing an original used rail allows you to maintain the factory character of the vehicle while reducing expenses.

Roof rail system expansion and additional information

If you are planning a comprehensive repair or upgrade of the roof area in your BMW and need other elements from the same group, such as crossbars, additional mouldings, or mounting elements, check the available parts in the BMW roof racks and rails category.

For users interested in the conscious selection of components from the secondary market and the use of recycled elements in the context of performance and environmental impact, we recommend the article Eco-tuning in practice: how to increase performance while reducing your carbon footprint with recycled parts, which discusses a practical approach to modern vehicle repairs and modifications.