BMW G30 Seat Motor Front Left Right N/O/S Backrest Adjustment Motor 921864-104

BMW G30 Seat Motor Front Left Right N/O/S Backrest Adjustment Motor is an original seat mechanism component designed for precise adjustment of the backrest tilt in front seats. Thanks to its factory BMW design, it ensures proper cooperation with seat rails and gears, which translates into driver and passenger comfort as well as stable back support while driving. This is a practical solution for users who want to restore full backrest adjustment functionality after a failure or wear of the factory drive.

Specifications and technical data

• SKU: 921864-104
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7314218
• Substitutable numbers: 7314218, 52107314218, 921864-104
• Location on the vehicle: Front, Left, Right
• Category: Additional Seat Parts

Purpose and function in the BMW G30 seat

The backrest adjustment motor is responsible for driving the mechanism that changes the tilt angle of the front backrests. This component works with the seat's screw or gear transmission, allowing for smooth adjustment of the backrest position within the range provided by the manufacturer. In the BMW G30 model, it is a key component of the seat comfort system, influencing the ergonomics of the driving position and proper spine support during long trips.

Thanks to its factory fit for BMW seat construction, the motor ensures:

• proper torque transmission to the backrest mechanism,
• stable operation without unwanted play in the system,
• preservation of the original adjustment range intended for front seats.

Vehicle placement and mounting configuration

The presented motor is adapted for operation in front seats on the left and right side, which facilitates the selection of parts when repairing both seating positions. Placement in the front cabin area allows for direct control of the driver's or passenger's backrest using the factory seat adjustment buttons.

Such a design solution means that one type of drive can be used on both sides of the vehicle, which simplifies the service process and reduces the number of part variants needed in the workshop. For the user, this translates into an easier replacement of a damaged motor without the need to modify the installation or seat mechanics.

Technical characteristics and compatibility

The backrest adjustment motor in the BMW G30 is a seat system component designed as part of the original interior architecture. Its electrical and mechanical parameters are adapted to the vehicle's installation, which allows for:

• proper cooperation with the factory seat control,
• maintaining the appropriate backrest movement speed,
• maintaining the torques and loads required by the manufacturer.

The product has a dedicated OEM part number and interchangeable numbers, which facilitates verification of compatibility with the specific seat configuration in a given BMW G30 unit. Before purchasing, it is worth comparing the markings with the vehicle documentation or the dismantled component to ensure full compatibility.

Condition, service application and benefits of installation

The offered motor comes from the Other seat parts group and is a used component, which makes it an attractive solution for maintenance repairs and restoring the efficiency of the seat adjustment system in a BMW. Choosing an original component from dismantling allows you to maintain the factory characteristics of the backrest mechanism while reducing costs compared to purchasing a new part.

By installing this motor, the user gains:

• restoration of the electric backrest adjustment in the front seat,
• preservation of the original ergonomics of the driving position,
• consistency with other elements of the BMW G30 seat system.

BMW seat system expansion – related items

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 seat rails, height adjustment mechanisms, or additional backrest drives, check the available parts in the Other BMW seat parts category.

Knowledge about used parts and practical tips

When selecting used components for comfort and seat adjustment systems, it is worth knowing the general rules for verifying part numbers, compatibility between models, and good assembly practices. Material describing when purchasing components from the secondary market is justified and how to minimize the risk of incorrect selection may be helpful. More information can be found in the article Volkswagen – solidity and reliability. Why are used VW parts a reasonable choice?, which discusses universal principles for choosing used components, also useful when servicing a BMW.