Mercedes-Benz M-Class ML W164 Rear Right O/S Backrest Mount Bracket A1646100831

The Mercedes W164 Right Seat Mount is an original structural component designed for the rear right side of a Mercedes vehicle. It ensures a stable seating position, contributing to the safe and predictable behavior of the seat during everyday use. A used OEM component is a sensible choice for repairs where factory fit and the original interior geometry are important.

Specifications and technical data

• SKU: A1646100831
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1646100831
• Substitutable numbers: A1646100831, A 164 610 08 31, KZ
• Location on the vehicle: Rear, Right
• Category: Other Interior Parts & Accessories

Seat Mount Purpose and Function

The right seat mount in W164 series models is responsible for the mechanical connection of the rear seat to the body on the right side. This component operates in the rear area, transferring loads from passenger weight, luggage, and forces generated during braking and acceleration.

A correctly selected mount:

• maintains the correct position of the seat relative to the floor and body,
• reduces unwanted play and creaks in the rear interior,
• supports the operation of safety systems that rely on a stable seating position.

Construction and Fit for Mercedes W164

The original seat mount was designed specifically for the rear body architecture of the Mercedes W164. The geometry of the mounting points, shape, and force distribution are adapted to the factory mounting holes on the rear right side of the vehicle. This allows the component to:

• precisely fit the floor structure without modifications,
• maintain compliance with factory assembly tolerances,
• easily integrate with existing seat rails and folding mechanisms (if present in the vehicle's configuration).

Such a fit is particularly important in vehicles where the interior is subjected to loads – both in daily family use and during intensive use of the cargo space.

Characteristics of a Used OEM Component

As a part from the aftermarket, the right seat mount is a salvaged component and an original Mercedes part. In practice, this means retaining the factory construction, material, and manufacturing technology, which is crucial for elements responsible for durable structural connections within the interior.

Compared to aftermarket alternatives, a used OEM component allows for:

• maintaining the original stiffness of the seat-to-body connection,
• reducing the risk of issues with the right-side seat geometry,
• more predictable behavior during installation and operation.

Installation and Operational Tips

The mount operates in the rear zone of the vehicle, where it is exposed to variable loads and vibrations. When replacing it, pay attention to:

• checking the condition of the mounting points in the body (no corrosion, deformation),
• correctly tightening the bolts according to the vehicle manufacturer's recommendations,
• verifying the interaction of the mount with the seat folding or sliding mechanism, if present.

After installation, it is recommended to verify the stability of the seat during a test drive – the absence of knocks and play in the rear right interior indicates a correct component fit.

Expanding Configuration and Selecting Other Components

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

When planning broader modifications or repairs to the suspension, braking system, or chassis, it is also worth expanding your knowledge about the structural differences between standard and sport versions – an article detailing the construction of powertrains, brakes, and load-bearing elements in sport models, available at the link Audi RS vs. Other Models – What's Under the Hood and Chassis?, may be helpful.

Summary

The Mercedes W164 Right Seat Mount is a practical solution for users who want to restore the correct mounting of the rear right seat while maintaining factory assembly parameters. A used, original OEM component allows for a technically correct repair, maintaining proper interior geometry, and a stable seating position in the rear of the vehicle, which is important for both passenger comfort and safety.