Mercedes W204 Rear Seat Lock Release Right Left N/O/S Locking Latch A2049200972

Mercedes W204 Rear Seat Lock Release Right Left N/O/S Locking Latch is an original backrest folding mechanism component, designed for installation on either the right or left side. Thanks to its factory design, it ensures secure backrest locking while allowing for convenient unlocking from inside the vehicle. This is a practical solution for users who want to restore full functionality to the rear seat without compromising on safety.

Specifications and technical data

• SKU: A2049200972-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2049200972
• Substitutable numbers: A2049200972, A 204 920 09 72
• Location on the vehicle: Rear, Right, Left
• Category: Additional Seat Parts

Purpose and function in the seating system

The presented backrest lock release latch is a component of the rear seat system in the Mercedes C-Class W204 generation. It is responsible for the mechanical locking and unlocking of the backrest on both sides of the vehicle – it can operate on both the driver's and passenger's side in the rear. A properly functioning latch is crucial for maintaining backrest stability while driving and for trouble-free folding of the seat to increase cargo space.

This component works with the cables and control levers in the backrest, which is why its correct selection in terms of model and body version has a direct impact on user comfort and the safety of passengers and cargo.

Construction and technical features

The latch mechanism is based on precisely fitted metal components and guides that ensure repeatable backrest locking every time it is closed. The design was developed by the vehicle manufacturer for operation in the rear part of the cabin, where it is exposed to variable loads resulting from backrest movement and passenger pressure.

The solution used in this latch allows for:

• stable maintenance of the backrest in an upright position,
• smooth release of the lock after using the lever or cable,
• repeatable operation without the need for adjustment after each folding of the seat.

Thanks to the original design, compatibility with the factory mounting system in the rear of the body is maintained, which facilitates installation and minimizes the risk of play or improper backrest closing.

Condition of the component and benefits of using a used part

The offered latch comes from disassembly and is a used part, which allows for an economical repair of the seating system while maintaining original build quality. Unlike replacements of uncertain origin, the factory mechanism retains the proper tolerances and geometry, allowing it to work with existing guides, cables, and catches without the need for modifications.

Using an original, used rear seat lock release latch is a good solution in situations where:

• the backrest does not lock properly on one side,
• the release mechanism operates with noticeable resistance or jams,
• mechanical damage has occurred during intensive use or a collision.

Selection and vehicle compatibility

To correctly select the rear seat lock release latch for a specific version of the Mercedes W204, it is worth verifying compatibility by OEM number and comparing the mounting design with the component currently installed in the vehicle. In case of doubt, it is also helpful to check the placement on the vehicle – this latch model is intended for installation in the rear of the cabin, with the possibility of use on the right or left side of the backrest.

For users who want to organize the process of selecting parts by OEM number or interchangeable numbers, a practical guide will be useful: how to select the right car part by VIN and OEM number. It allows you to verify the component's compatibility with a specific car step by step.

Expanding seat system upgrades

If you are planning a comprehensive repair or upgrade of the rear seat area in your Mercedes and need other elements from the same group, such as guides, release levers, or additional backrest adjustment mechanisms, check the available parts in the Other Mercedes seat parts category.

For owners who are also interested in tuning and improving premium segment cars, an article describing the modification possibilities of MINI models may be an inspiration: MINI John Cooper Works – what makes it stand out and how to improve your MINI?. It allows for a broader look at the topic of using used OEM parts in modernization projects.