Mercedes A207 Rear Left N/S Seat Belt Buckle Tensioner A2078600369

The Mercedes A207 Seat Belt Buckle Tensioner Left Rear is an original part from the seat belts and parts category, designed for installation on the rear left side of the vehicle. This component has been engineered by the manufacturer for precise integration with the factory Mercedes safety system, ensuring stable belt fastening and predictable system operation.

Specifications and technical data

• SKU: A2078600369
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2078600369
• Substitutable numbers: A2078600369, A 207 860 03 69
• Location on the vehicle: Rear, Left
• Category: Seat Belts & Parts

Intended Use and Vehicle Placement

The seat belt buckle tensioner has been prepared for operation on the rear left side of the cabin. It is responsible for proper belt guidance and locking, as well as for securely connecting the belt to the body structure at this specific mounting point.

Dedicated placement on the vehicle means:

• correct geometric fit with the seat and the center console or side of the body,
• maintenance of the original buckle position, which facilitates belt fastening for individuals sitting in the rear left,
• consistency with the original safety system implemented by the manufacturer.

Technical and Functional Characteristics

The seat belt buckle tensioner is a component that works in direct connection with the belt and the seat structure. The design has been developed to:

• maintain a stable buckle position relative to the seat, which limits belt twisting and shifting,
• ensure secure fastening through a properly selected latch mechanism,
• integrate with the vehicle's safety system within the parameters set by the manufacturer.

Its original Mercedes origin promotes compliance with factory vehicle specifications, which is important for both safety and subsequent service diagnostics.

Condition, Origin, and Service Application

This part comes from the used Mercedes parts offering, allowing for an economical repair or replacement of a damaged tensioner while maintaining the original construction. This type of component is particularly useful in situations where:

• the safety system has deployed and belt components need replacement,
• the rear left seat belt buckle shows mechanical wear or locking issues,
• a workshop aims to maintain consistency with the vehicle's factory equipment.

By preserving the original geometry and mounting points, installation in place of the factory component proceeds in an organized and predictable manner for experienced service technicians.

Benefits of Using an Original Buckle Tensioner

Using a Mercedes seat belt buckle tensioner offers a range of practical benefits:

• compatibility with the body structure – no need for modifications to mounting points or adaptations,
• preservation of factory user comfort – correct buckle positioning relative to the seat and passenger,
• integration with the safety system – a component designed to work within a specific seat belt system,
• optimal cost-to-quality ratio compared to aftermarket alternatives of uncertain origin.

For workshops and end-users, this means the ability to perform repairs in a technically correct manner, while maintaining predictable vehicle behavior in emergency situations.

Related Products and Guide Materials

If you are looking for other Mercedes seat belts and parts for your car, check out our dedicated category: Mercedes seat belts and parts. There you will find a wide selection of components for various models of this brand, making it easier to assemble the entire system.

When selecting used safety system components, it is advisable to follow proven procedures. Detailed instructions on how to safely purchase such components online can be found in the guide: Safe Online Purchase of Used Car Parts – A Step-by-Step Guide. This will help you verify part compatibility with your vehicle and prepare for professional installation.