Mercedes S212 Seat Backrest Mount Rear Left N/S Holder Bracket A2129200324

Mercedes W212 Seat Belt Buckle Mount Cover Right Front is a specialized component from the seat belts and parts category, designed for installation in the Mercedes E-Class W212 body. It provides an aesthetic and functional finish to the seat belt buckle mounting area, supporting proper belt routing and the stability of the entire system.

Specifications and technical data

• SKU: A2129200324
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2129200324
• Substitutable numbers: A2129200324, A 212 920 03 24
• Location on the vehicle: Rear, Left
• Color: Black
• Category: Seat Belts & Parts

Purpose and Function of the Component

The seat belt buckle mount cover is responsible for protecting and concealing the seat belt mounting point, as well as organizing the belt's path relative to the seat back. In the Mercedes W212, this element works with the factory belt system, reducing the risk of abrasion and unwanted slack in the mounting area.

Thanks to its precise shape and fit to the body's structure, the cover helps maintain the stable position of the seat belt buckle mount, which is important for both user comfort and the predictable operation of the passive safety system.

Construction, Color, and Fitment

The presented component is prepared for installation in the rear of the vehicle on the left side, as indicated by the vehicle's designation. The construction is designed for specific mounting points in the Mercedes W212, which translates to:

• factory fit with interior upholstery and trim, without the need for modifications,
• stable seating on the mounts, minimizing unwanted slack and vibrations,
• maintaining the original belt routing geometry relative to the seat back.

The black color of the cover allows for seamless integration into typical Mercedes W212 interior configurations, helping to maintain a uniform aesthetic of the cockpit and rear cabin.

Characteristics of a Used Component

The cover is a used part, meaning it is an original Mercedes component with preserved factory design features. A used element of this type is a cost-effective solution in situations where:

• mechanical damage or cracking of the original cover has occurred,
• it is necessary to restore the completeness of the seat belt system after upholstery or body repairs,
• it is important to maintain the original interior appearance and fit without using aftermarket replacements with different geometry.

Choosing a used OEM part allows for reduced repair costs while maintaining compliance with the vehicle's factory specifications.

Benefits of Using an Original Seat Belt Buckle Mount Cover

Using a dedicated cover in the Mercedes W212 offers a range of practical benefits:

• Protection of the mounting point – reducing exposure of screws, latches, and guides to dirt and accidental damage.
• Improved belt usability ergonomics – organized belt path relative to the seat back, making fastening and unfastening easier.
• Aesthetic interior finish – concealing structural mounting elements, in line with Mercedes' finishing standards.
• Consistency with the safety system – maintaining the geometry of elements interacting with the belt as intended by the manufacturer.

Part Selection and Additional Information

To correctly select the cover for a specific body version and interior configuration, it is advisable to refer to the OEM number and manufacturer's catalog data. If you have doubts about compatibility with your E-Class model, comparing the shape and mounting method with the currently installed part will be helpful.

If you are looking for other parts from the Mercedes seat belts and parts category, check out the Mercedes seat belts and parts available in our store to complete the set of components for your vehicle.

You can find more information on how to make informed choices between original, aftermarket, and used parts in the article Original, Aftermarket, or Used – Which Car Parts Are Most Cost-Effective?, where we discuss differences in cost, quality, and fitment by OEM numbers.