BMW F20 F21 LCI Trunk Lid Hinge Left N/S Mineral Grau - B39 7239875

BMW F20 F21 LCI Trunk Lid Hinge Left N/S Mineral Grau - B39 is an original body component designed for 1 Series LCI models, ensuring the proper operation of the tailgate. This used hinge in Mineral Grau Metallic – B39 allows for maintaining visual consistency of the bodywork and the correct geometry of the trunk lid. It is a practical solution for accident repairs, replacing worn-out components, or adjusting the fitment of the rear section of the vehicle.

Specifications and technical data

• SKU: 7239875-MG
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7239875
• Substitutable numbers: 41007284523, 7284523, 41007239875, 7239875
• Location on the vehicle: Left
• Color: Mineral Grau Metallic - B39
• Category: Other Exterior Parts & Accessories

Purpose and function of the trunk lid hinge

The left trunk lid hinge in the BMW 1 Series F20/F21 LCI is responsible for stable guidance and support of the lid during opening and closing. A correctly selected component ensures:

• smooth movement of the lid without jamming or skipping,
• proper alignment of gaps between the lid, fenders, and bumper,
• appropriate load transfer to the body structure.

As a result, the rear part of the body maintains its factory line, and the lid operates in a predictable, repeatable manner, which is important for both user comfort and trunk sealing.

Color and body fitment

The hinge comes in Mineral Grau Metallic – B39, which facilitates integration with bodywork in the same shade. In many cases, this allows for reducing or completely omitting additional painting of the component, which shortens repair time and reduces costs. Maintaining the original finish promotes vehicle aesthetics and makes it easier to keep a consistent look for the rear of the body.

Installation characteristics

The hinge is designed for installation on the left side of the vehicle, in the area where the trunk lid attaches to the roof structure and fender. The design based on factory mounting points allows for:

• precise adjustment of the lid position relative to the body,
• maintaining compliance with factory body geometry,
• easier adjustment of the closing and lift height of the lid.

The used original component is a good base for body and mechanical repairs, especially where maintaining proper stiffness and repeatability of the hinge operation is essential.

Benefits of using an original hinge

Choosing an original trunk lid hinge for the BMW 1 Series F20/F21 LCI allows you to maintain compliance with the factory body structure. This solution is beneficial for:

• repairs after collisions in the rear part of the vehicle,
• replacing components after operational wear,
• restoring proper lid fitment after previous, imprecise repairs.

A properly selected hinge reduces the risk of overloading the gas struts, improves trunk operation comfort, and helps maintain the tightness of the rear body section, which is important for protecting the interior from moisture.

Repair completion and related offers

If you are planning a comprehensive repair or upgrade of the rear body zone in your BMW and need other elements from the same group, such as mounts, brackets, or additional holders, check the available parts in the Other BMW category.

When planning broader work on the body and chassis, it is also worth checking out the material comparing technical solutions in sports versions of cars – a detailed discussion of the differences in engine, brake, and chassis construction can be found in the article Audi RS vs other models – what is hidden under the hood and chassis?, which helps to better understand the manufacturers' approach to designing key components.