BMW E90 E91 E91 LCI Seat Belt Buckle Tensioner Lower Rear Left N/S 6975363

BMW E90 E91 Left Rear Seat Belt Buckle Tensioner is an original safety system component, designed for installation on the rear left side of the body in BMW 3 Series E90/E91 models. Its precise design ensures proper cooperation with the seat belt, leading to stable mounting and correct operation of the passenger protection system.

Specifications and technical data

• SKU: 6975363
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 72116975363
• Substitutable numbers: 72117211595, 7211595, 72117137469, 7137469, 72116975363, 6975363, 72116983007, 6983007, 72117127223, 7127223
• Location on the vehicle: Rear, Left
• Category: Seat Belts & Parts

Purpose and Function of the Seat Belt Buckle Tensioner

The presented BMW left rear seat belt buckle tensioner is an element from the Seat Belts and Parts category, responsible for stable belt anchoring and cooperation with the tensioning mechanism. It is mounted on the rear left side of the vehicle, guaranteeing compatibility with the factory mounting system in the E90/E91 body.

This element is responsible for:

• correct guidance and locking of the seat belt on the rear left side,
• maintaining proper mounting geometry in the event of the safety system activation,
• stable connection with the body structure, in accordance with BMW manufacturer's specifications.

Compatibility and Compliance with BMW

The tensioner has been developed as a dedicated part for BMW 3 Series E90/E91, which means maintaining factory mounting points and proper cooperation with the original seat belt. Thanks to this:

• no modifications to the mountings or interference with the body structure are required,
• compliance with the BMW safety system on the rear left position is maintained,
• installation proceeds predictably for an experienced car mechanic or electrician.

The product comes from the BMW line, which helps maintain quality consistency with other safety system components in the vehicle.

Element Characteristics and Application Benefits

The left rear seat belt buckle tensioner for BMW E90/E91 has been designed for durability and repeatable performance in everyday use. As a used part, it is a sensible choice for users who want to maintain the original safety system design at optimal service costs.

• Original geometry – maintaining the correct position of the buckle relative to the seat and body.
• Dedicated vehicle placement – rear left side, minimizing the risk of errors in part selection.
• Consistency with the factory safety system – compatibility with the seat belt and other mounting components.
• Sensible service solution – ability to restore full system functionality without the need for aftermarket parts of uncertain quality.

Professional Installation and Safety Aspects

Due to the importance of the seat belt system for passenger protection, installation of the seat belt buckle tensioner by a qualified service center, following the vehicle manufacturer's procedures, is recommended. A correctly installed component:

• ensures predictable seat belt behavior during sudden braking or collision,
• maintains stable mounting at the factory body points,
• reduces the risk of incorrect safety system operation resulting from incorrect part selection or installation.

Related Categories and Technical Knowledge

If you are looking for other elements from the BMW seat belts and parts category, check out the BMW seat belts and parts available in our store to select complete solutions for your vehicle within a single, cohesive product group.

When servicing vehicles of various makes, including BMW and Mercedes, knowledge about the operation and selection of engine components can also be helpful. We encourage you to read the article Reliability under the star – how to care for engine accessories in popular Mercedes-Benz C-Class and E-Class models?, which discusses a practical approach to servicing and selecting parts for premium cars.