Seat Lower Belt Mercedes W212 Tensioner Buckle Front Left Right A2128601369

Mercedes W212 Front Seat Belt Buckle is an item from the Seat Belts and Parts category, designed for installation on the front seats, either on the left or right side. This is an original Mercedes solution that allows for the restoration of proper passive safety system functionality after a collision, malfunction, or wear and tear.

Specifications and technical data

• SKU: A2128601369
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2128601369
• Substitutable numbers: A2128601369, A 212 860 13 69, KZ
• Location on the vehicle: Front, Left, Right
• Category: Seat Belts & Parts

Purpose and Vehicle Placement

The seat belt buckle is designed for use on front seats, with the possibility of installation on both the driver's and passenger's side. This solution simplifies the selection of the correct component for interior repairs, especially after the activation of safety systems.

Precise fitting to the seat and center console structure ensures stable mounting and correct belt routing. This allows the locking mechanism to function predictably, which is crucial for user safety during daily operation.

Technical and Functional Characteristics

As an item within the seat belts and parts group, the buckle is responsible for:

• mechanical belt fastening – securely holding the buckle in the locked position while driving,
• fastening control – interacting with the vehicle's electrical system (signaling an unfastened belt on the instrument cluster),
• proper cooperation with pretensioners (if provided for in the specific vehicle configuration).

The original Mercedes design allows for the preservation of the safety system's original operating parameters, including correct belt routing geometry and the proper positioning of the mounting point relative to the seat.

Benefits of Using an Original Mercedes Buckle

Using an original Mercedes buckle in a W212 offers several practical benefits:

• Compatibility with Vehicle Systems – maintaining correct interaction with the body electronics and warning lights.
• Stable Mounting – fitting original mounting points without requiring modifications to the seat structure.
• Consistency with Other Interior Elements – correct shape and geometry, in line with the manufacturer's design.
• Safe Operation – maintaining predictable seat belt system behavior in emergency situations.

This item comes from the used OEM parts category, allowing for a combination of controlled quality and reasonable repair costs, especially for extensive post-accident work.

Condition, Verification, and Application in Repairs

The seat belt buckle is offered as a used part, which in workshop practice often represents an optimal compromise between price and functionality. Before installation, standard verification of the vehicle's electrical system and a check of the locking mechanism's correct operation after fastening the belt are recommended.

For post-accident repairs or to expedite service orders, consider using readily available OEM parts. You can read more about this topic in the article: Availability of Car Parts on Hand vs. Repair Time – How Used OEM Parts Shorten Workshop Stays?.

Other Mercedes Seat Belts and Parts

If you are looking for other Mercedes seat belts and parts for comprehensive interior or safety system repairs, check out our dedicated category: Mercedes Seat Belts and Parts. This will help you easily select compatible components for your model, maintaining technical consistency throughout the entire system.