Mercedes-Benz M-Class ML W164 Rear Left N/S Backrest Mount Bracket A1646100731

Mercedes W164 Rear Seat Backrest Bracket Left Rear is an original structural component designed for the rear, left side of the seat in W164 series models. Thanks to its factory geometry and precise fit, it ensures stable, secure support for the seat backrest and proper cooperation with other components of the rear passenger area. This is a practical solution for users who want to restore the correct operation of the backrest mechanism while maintaining original Mercedes quality and the consistency of the entire interior structure.

Specifications and technical data

• SKU: A1646100731
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1646100731
• Substitutable numbers: A1646100731, A 164 610 07 31
• Location on the vehicle: Rear, Left
• Category: Other Interior Parts & Accessories

Vehicle Application and Placement

The presented bracket is a dedicated component for the rear of the vehicle, on the left side. It is responsible for the proper seating and guidance of the seat backrest, which directly impacts the comfort and safety of rear passengers. Using a component that matches the factory construction allows for maintaining the correct backrest geometry, its stability during driving, and the proper functioning of folding mechanisms.

Thanks to its precise fit to the W164 series body, the bracket cooperates with original mounting points and upholstery elements, minimizing the risk of stress, creaks, or unwanted play in the rear cabin.

Technical and Functional Characteristics

The seat backrest bracket serves a load-bearing and positioning function for the entire backrest module. The appropriately designed structure ensures:

• stable support for the backrest in the rear left part of the vehicle,
• proper transfer of loads generated during driving and braking,
• maintenance of the correct backrest angle relative to the seat,
• compatibility with factory folding and locking mechanisms of the seat.

The use of an original structural solution reduces the risk of improper interior component fit and facilitates installation in service or workshop conditions.

Condition of the Part and Benefits of Using a Used Part

The offered bracket comes from the group of original Mercedes parts in used condition. Such structural components, when in good working order, are particularly economically advantageous – they allow for restoring the full functionality of the rear seat without the need to invest in a new part. For load-bearing and mounting elements, maintaining factory geometry is crucial, which is why using an original bracket is a technically safe and predictable solution in terms of fit.

For workshops and individual users, this means shorter installation times, fewer modifications, and the ability to maintain the structural integrity of the entire rear interior.

Why Choose an Original Mercedes W164 Seat Backrest Bracket

Choosing a part that matches the factory specification primarily offers guaranteed fit to the body and other interior components. The original seat backrest bracket was designed specifically for the W164 platform, which translates to:

• maintaining the original rigidity of the rear seat structure,
• proper cooperation with seat belts and seat mounting points,
• reduction of unwanted noises resulting from play or stress,
• easier diagnostics and future servicing.

For users who care about the technical consistency of their vehicle and the comfort of rear passengers, this is a solution that restores factory usability without compromising on construction.

If you are planning a comprehensive repair or upgrade of the rear seat area in your Mercedes and need other parts from the same group, such as additional brackets, supports, or mounting holders, check the available parts in the Other Mercedes category.

Technical Support and Part Selection

When selecting mounting components for a vehicle interior, it is crucial to pay attention to compatibility with the specific body version and rear seat configuration. If you have doubts about compatibility, it is advisable to consult service documentation or part numbers to avoid problems with installation and upholstery fit.

For those interested in deepening their knowledge about the structural differences between various model versions and the importance of proper component selection, an article discussing the comparison of sports and standard vehicle variants, available at the link: Audi RS vs. Other Models – What’s Under the Hood and Chassis?, may be helpful.