BMW E90 E91 LCI Headlight Mount Arm Bracket Left N/S 7138401

BMW E90 E91 LCI Headlight Mount Arm Bracket Left N/S is an original mounting component from the Front lights group, designed for precise positioning of the headlight on the left side of the vehicle body. It provides stable support for the lamp, reduces unwanted vibrations, and helps maintain the correct geometry of the front lighting in your BMW.

Specifications and technical data

• SKU: 7138401
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7138401
• Substitutable numbers: 51647138401, 7138401
• Location on the vehicle: Left
• Part type: Headlight Assembly
• Category: Headlight Assemblies

Purpose and function of the headlight bracket

The headlight mount arm bracket for BMW 3 Series E90/E91 models is responsible for a stable connection between the headlight and the vehicle body structure. This component operates in the front-end area, where it absorbs loads resulting from driving, road irregularities, and vibrations generated by the drivetrain. A correctly selected and installed bracket:

• maintains the lamp in the operating position designed by the manufacturer,
• reduces the risk of play and "floating" of the headlight while driving,
• helps maintain the correct gap lines between the lamp, fender, and bumper,
• indirectly influences the effectiveness and even distribution of the light beam on the road.

Compatibility with the body and lighting system

The presented bracket has been designed specifically for the front body structure of the BMW 3 Series E90/E91 generation, taking into account the characteristic geometry of the headlights and mounting points. Placement on the vehicle on the left side allows for clear identification of the mounting position and eliminates the risk of error when selecting the part. Thanks to the factory mounting geometry:

• original bolting and headlight guidance points are preserved,
• there is no need for modifications or "forced" fitting of the component,
• installation is predictable and repeatable for service purposes.

Characteristics of the used component

The headlight mount arm bracket is a secondary market part in used condition, which means it comes from vehicle dismantling but retains full structural functionality. Such components are particularly beneficial for accident repairs or restoring the factory geometry of the car's front end, where original fitment is a priority at reasonable costs. Choosing a used OEM component allows you to:

• maintain material consistency with other headlight mounting elements,
• preserve factory adjustment and support points for the lamp,
• reduce the risk of issues with light alignment after repair.

Benefits of using an original BMW bracket

Using an original bracket in the front lighting area provides measurable operational benefits. Precise fitment with the headlight and body structure facilitates service work, shortens installation time, and reduces the risk of damaging the lamp during adjustment or bumper removal. Key advantages include:

• preservation of the factory geometry of the front end and body lines,
• stable support for the lamp during long-term operation,
• reduction of unwanted vibrations that can affect driving comfort and headlight durability.

Expanding repairs within the BMW Front lights category

If you are planning a comprehensive repair or upgrade of the front lighting zone in your BMW and need other elements from the same group, such as headlights, holders, or additional mounts, check the available parts in the BMW Front lights category.

Support in selecting used components

When working with secondary market parts, it is worth knowing the specifics of original components and their typical applications in popular models. If you want to better understand how to effectively select used parts for your car and what to look for when purchasing, read our material: The best used car parts – a guide to the most frequently chosen original parts for popular car brands and models.