BMW E63 E64 LCI Lower Belt With Left Seat Belt Tensioner N/S 9141181

BMW E63 E64 LCI Left Front Seatbelt Pretensioner is a safety system component designed for installation on the driver's side in facelifted 6 Series models. It is responsible for the controlled tightening of the seatbelt in the event of a collision, supporting the airbag system and ensuring the driver's stable position in the seat.

Specifications and technical data

• SKU: 9141181
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9141181
• Substitutable numbers: 72117210889, 7210889, 72119141181, 9141181
• Location on the vehicle: Left
• Category: Seat Belts & Parts

Seatbelt Pretensioner Purpose and Function

The seatbelt pretensioner for the front left side works in conjunction with the factory seatbelt and the SRS control unit in BMW 6 Series E63/E64 LCI models. Upon detecting a collision, it generates a rapid, controlled tensioning of the seatbelt webbing, which limits the driver's body movement relative to the seat and steering wheel.

This component is an integral part of the Seatbelts and Parts category, responsible for:

• stabilizing the driver in the correct position during a collision,
• working with airbags to reduce G-forces,
• precise integration with the seat structure on the driver's side in facelifted BMW E63/E64 models.

Compatibility and Fitment for BMW

The pretensioner has been specifically designed for use in facelifted (LCI) BMW 6 Series E63/E64 models, taking into account seat geometry, mounting points, and safety system operation characteristics. This ensures:

• factory fitment with the driver's seat structure,
• correct positioning relative to the seatbelt and system activation thresholds,
• preservation of the original safety characteristics intended by the manufacturer.

The vehicle placement designated as Left indicates installation on the driver's side in left-hand drive vehicles, which is crucial for selecting the correct component.

Characteristics of a Used Component

The offered seatbelt pretensioner is a used part, sourced from a dismantled vehicle. This type of component allows for an economical repair of the safety system while maintaining:

• original BMW construction in terms of mountings and connectors,
• compatibility with the vehicle's factory SRS system,
• consistency with other seatbelt components in the specific model.

Prior to installation, it is recommended to verify proper functionality by a qualified service center, with particular attention to airbag system diagnostics and clearing any potential errors in the control unit.

Why Use a Dedicated BMW Seatbelt Pretensioner

Using a pretensioner specifically designed for the driver's side of the BMW E63/E64 LCI ensures:

• predictable safety system behavior in emergency situations,
• proper interaction with the vehicle's electronics (collision sensors, SRS control unit),
• correct seatbelt routing geometry relative to the seat and pillar.

This solution is particularly important after airbag system deployment or during post-accident repairs, where restoring the full functionality of the seatbelt system is required.

Complementary Offer and Additional Resources

If you are looking for other items in the BMW Seatbelts and Parts category, check out our dedicated offer: BMW Seatbelts and Parts. This will help you easily complete the other components needed for a full safety system repair.

To compare solutions used in sports models from other brands, you can read an analysis of construction and performance in the blog article Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, which discusses, among other things, differences in manufacturers' approaches to key vehicle systems.