BMW F06 F12 Seat Backrest Width Adjustment Motor Front Left N/S 7309651

BMW F06 F12 Seat Backrest Width Adjustment Motor Front Left N/S is a precision seat adjustment component, designed specifically for BMW F-series models with coupe and gran coupe body styles. This used, original component allows for maintaining the full functionality of the driver's seat backrest width adjustment, ensuring a comfortable and stable position behind the wheel. Thanks to its factory-spec fitment, it represents a solution compatible with the factory electrical installation, requiring no modifications.

Specifications and technical data

• SKU: 7309651
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7309651
• Substitutable numbers: 7309651, 52107309651
• Location on the vehicle: Front, Left
• Category: Additional Seat Parts

Purpose and function in the vehicle

The seat backrest width adjustment motor is responsible for the smooth control of the side bolsters on the driver's side. This component works with the factory seat control module, enabling:

• precise adjustment of the backrest width to the driver's physique,
• increased torso stabilization while driving,
• maintaining comfort on long journeys,
• preserving the full functionality of the electric seat adjustment.

Its location in the front – left side zone means that the component operates directly in the driver's seat, where operational loads are highest and the efficiency of the adjustment system is crucial for ergonomics.

Construction and fitment for BMW F06 / F12

The backrest width adjustment motor in this version is structurally adapted to the architecture of BMW F06 and F12 seats. This means:

• compatible mounts with the seat frame,
• electrical connectors adapted for installation in these models,
• operation along the axis of the backrest side bolsters,
• preservation of the original backrest movement characteristics.

As a result, installation is similar to the factory process, and integration with the existing seat adjustment system does not require mechanical or electrical adaptation, provided the part selection has been made according to the manufacturer's designations.

Benefits of using the original adjustment motor

Using the original seat backrest width adjustment motor in a BMW F06 / F12 brings a number of practical operational benefits:

• preservation of factory seat ergonomics and adjustment range,
• consistent operation with other seat adjustment motors,
• reduced risk of seat control module errors resulting from incorrect part selection,
• maintaining driving comfort at the level intended by the manufacturer.

For users who value comfort and stable side support, a functional backrest width adjustment motor is an essential element affecting the perceived quality of the interior as well as safety during dynamic driving.

Condition, verification, and part selection

The offered element comes from the Other seat parts group and is intended for use as a replacement part in the front seat on the left side. Before installation, it is recommended to verify compatibility with the specific vehicle configuration, particularly regarding the seat version and additional equipment. Selection by OEM number or interchangeable part numbers helps to reduce the risk of incorrect fitment.

If you are considering whether an original part, a replacement, or a used component is the better choice in your case, the article comparing the costs and quality of different types of parts may be helpful – check the material: Original, replacement, or used – which car parts are the most cost-effective?.

Expanding the scope of repair and related BMW components

If you are planning a comprehensive repair or upgrade of the seat area in your BMW and need other elements from the same group, such as rails, adjustment mechanisms, or additional seat modules, check the available parts in the category Other BMW seat parts.

For users of premium cars who want to optimally combine service costs with maintaining high quality, especially in the case of brands such as BMW, it is also worth familiarizing yourself with the analysis of trends in the used components market: Crisis in the new parts market? Why used originals for premium cars are the hottest trend in 2026.