Mercedes W212 Rear Seat Folding Backrest Right O/S Bracket Mount A2129209500

Mercedes W212 Rear Seat Backrest Release Handle Latch Mount Right is an original part from the Seats and Seatbacks group, designed for the rear, right side of the vehicle's interior. Precise fitting to the seat structure in the Mercedes W212 ensures proper operation of the backrest release and locking mechanism, which translates to safe and comfortable use of the rear seat.

Specifications and technical data

• SKU: A2129209500-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2129209500
• Substitutable numbers: A2129209500, A 212 920 95 00, BG
• Location on the vehicle: Rear, Right
• Category: Seats and Sofas

Purpose and Function of the Component

The right-side rear seat backrest release handle latch mount is responsible for the stable seating of the rear seat backrest release mechanism. This component operates in the rear interior zone, on the passenger side, ensuring:

• secure guidance of the handle and latch mechanism,
• proper locking of the backrest in the working position,
• correct release of the backrest when folding the seat.

By maintaining the original mounting geometry, the mechanism operates smoothly, and the forces acting on the latch are evenly distributed, which reduces wear on other seat components.

Benefits of Using an Original Mount

Using an original mount in the Mercedes W212 allows for maintaining the structural integrity of the entire rear seat system. In practice, this means:

• stable connection between the handle and the backrest latch,
• preservation of factory clearances and operating ranges of the mechanism,
• reduced risk of jamming, looseness, or incomplete backrest locking.

The component from the Seats and Seatbacks group directly impacts the comfort of daily use of the rear interior – especially when frequently folding the backrest to increase luggage space.

Vehicle Placement and Installation Aspects

The mount is designed for installation in the rear interior, on the right side of the vehicle. This precise determination of vehicle placement facilitates the selection of the correct component during repairs or replacement of a damaged part. Installation involves seating the mount in the seat's factory mounting points and connecting it to the latch mechanism and the backrest release handle.

With a correctly selected component, there is no need to modify the seat structure – the original assembly line is maintained, and the mechanism's operation remains consistent with the manufacturer's design.

Characteristics of a Used Part

The offered mount is a used part, sourced from dismantling, which allows for maintaining the original specification while optimizing repair costs. This type of component is particularly attractive for servicing older Mercedes W212 models, where both compliance with the factory design and economic operational aspects are important.

Rear Seat Expansion and Modernization

Replacing the right-side rear seat backrest release handle latch mount often accompanies other work on the rear seat – such as regeneration of folding mechanisms, upholstery replacement, or improving access ergonomics to the trunk. If you are planning a comprehensive repair or modernization of the rear seat area in your Mercedes and need other parts from the same group, such as frames, folding mechanisms, or additional handles, check the available parts in the Mercedes Seats and Seatbacks category.

More About Interior Tuning and Modernization

If you are considering a broader interior modernization – replacing seats, improving ergonomics, or refreshing the dashboard – it is worth familiarizing yourself with practical tips on selecting used parts. A detailed discussion of possibilities for modifying seats and other components can be found in the article Car Interior Tuning with Global Parts, which shows how to effectively use original used parts when rebuilding the cabin.