BMW X3 G01 G20 G21 G22 Front Seat Width Adjuster Motor Left Right N/O/S 7418339

BMW X3 G01 G20 G21 G22 Front Seat Width Adjuster Motor Left Right N/O/S is a precision component of the seat adjustment system, designed for installation in front driver or passenger seats. Thanks to the use of original BMW technology, it ensures smooth, stable, and repeatable backrest width adjustment, which translates into better lateral support and higher driving comfort. This solution is particularly valued in premium vehicles, where ergonomics and the ability to precisely adjust the seat to the body shape are essential.

Specifications and technical data

• SKU: 7418339
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7418339
• Substitutable numbers: 7418339, 52107418339
• Location on the vehicle: Front, Left, Right
• Category: Seats and Sofas

Purpose and function in the seat system

The seat width adjuster motor is responsible for controlling the mechanism that narrows and widens the side sections of the backrest. In BMW X3 G01 and 3 Series G20, G21, and G22 models, this component works with the rails and gears built into the seat structure, enabling:

• precise adjustment of the backrest bolsters to the driver or passenger,
• increased torso stabilization while driving,
• improved ergonomics on long journeys,
• consistent operation with the factory electric seat controls.

As a result, the width adjustment system remains consistent with other seat functions, such as longitudinal or height adjustment, and the user receives comfortable and predictable mechanism performance.

Compatibility and vehicle placement

The presented motor is designed for installation in the front seats on the left or right side, in accordance with the factory BMW interior architecture. Its placement within the seat structure allows for direct cooperation with the original rails and mounting elements, which facilitates service and reduces the time required for replacement.

Such a solution is particularly beneficial when repairing the adjustment system in heavily used vehicles, where restoring full seat functionality quickly without interfering with the seat structure is a priority.

Benefits of using an original adjustment motor

Using a dedicated seat width adjustment motor in a BMW brings a number of practical benefits:

• preservation of the factory operating characteristics of the adjustment mechanism,
• proper cooperation with the vehicle's electrical system,
• perfect fit to the seat structure without the need for modifications,
• the ability to restore full adjustment functionality after the failure of the original component.

For the user, this means not only convenience but also stable lateral support in daily use, which is important both in city driving and on longer routes.

Use in tuning and interior upgrades

The seat width adjuster motor can be used not only for repairs but also in interior upgrade projects, where more advanced seats with adjustable bolsters are installed. In BMW X3 G01 and 3 Series G20, G21, G22 vehicles, this allows for the configuration of seats with a higher level of ergonomics, without giving up factory design solutions.

If you are interested in the broader context of cabin upgrades using seat components and control systems, it is worth checking out the guide Car interior tuning with Global Parts, which discusses the practical aspects of using used seats and equipment in personalization projects.

Expanding the BMW seating system – Seats and benches category

If you are planning a comprehensive repair or upgrade of the seating area in your BMW and need other elements from the same group, such as frames, adjustment mechanisms, or complete seats, check out the available parts in the BMW Seats and benches category.