Seat Buckle BMW F90 M5 G30 Tensioner Lower Belt Rear 7430064

Seat Buckle BMW F90 M5 G30 Tensioner Lower Belt Rear is an original BMW safety system component, designed for the rear of the vehicle. This is a used, factory part from the seat belts and parts category, designed to work with the lower belt tensioner system in the rear seat.

Specifications and technical data

• SKU: 7430064
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7430064
• Substitutable numbers: 7430064, 72117430064
• Location on the vehicle: Rear
• Category: Seat Belts & Parts

Purpose and Function in the Vehicle

The presented seat belt buckle with rear lower belt tensioner operates in the rear cabin area, responsible for secure belt fastening and interaction with the passive safety system. Its rear placement on the vehicle means the component is designed for specific loads, seat geometry, and mounting characteristics in the rear body structure.

As an original BMW part, the component is structurally matched to factory mounting points, which helps maintain correct belt routing geometry and proper tensioner function in emergency situations.

Construction and Technical Characteristics

The Seat Buckle BMW F90 M5 G30 Tensioner Lower Belt Rear combines the function of a belt buckle and an integrated lower seat belt tensioner in a single housing. This solution allows for:

• precise belt routing in the rear cabin, according to BMW's design specifications,
• controlled tensioner operation within the vehicle's passive safety system,
• secure mounting to the body structure, which reduces unwanted play and improves the predictability of the system's behavior.

The component was developed as an OEM part, therefore it works with the factory electronics and mechanics of the seat belt system, without the need for vehicle wiring modifications.

Application in BMW Models

The discussed seat belt buckle with tensioner is dedicated to modern high-end BMW models, such as the F90 M5 and G30 5 Series, where the safety system is designed for high performance and demanding use. Using an original component in the rear of the vehicle allows for maintaining:

• structural consistency of the seat belt system with other interior elements,
• correct interaction with the safety systems intended for the specific model,
• factory mounting standards, without interfering with the seat or body structure.

Condition, Verification, and Part Selection

The product comes from the group of used BMW parts, meaning it is a dismantled component that retains its factory construction and intended purpose. When selecting a seat belt buckle with tensioner for a specific vehicle, it is worth paying attention to:

• compatibility with the rear mounting area (vehicle placement),
• compatibility with the seat belt system used in the specific equipment version,
• consistency with the vehicle's safety systems (including rear seat configuration).

By retaining the original BMW construction, installation is similar to the factory process, which facilitates workshop work and reduces the risk of installation errors.

Safety, Comfort, and Vehicle Integration

Replacing the rear seat belt buckle with a tensioner with an OEM part allows for maintaining the safety and ergonomic parameters designed by BMW. A correctly selected and installed component contributes to:

• stable positioning of the belt on the passenger's body in the rear cabin,
• predictable response of the safety system in emergency situations,
• comfort of daily use thanks to the correct position of the buckle relative to the seat and backrest.

This solution is particularly important in high-performance cars, such as the BMW F90 M5 or G30, where the safety system must work in conjunction with the vehicle's dynamic character.

If you are looking for other parts from the BMW seat belts and parts category, check out our offer at BMW seat belts and parts, where you will find matching components for various models of this brand.

For a better understanding of the connections between the safety system and vehicle handling, you can also read an article describing the operation of the steering and power steering system – practical information can be found in the material Steering and Power Steering System – How it Works and What Fails?, which helps to view car safety in a broader technical context.