Mercedes W177 Rear Seat Bench Holder Left N/S Isofix Bracket Mount A1779201700

Mercedes W177 ISOFIX Mount Left is an original ISOFIX system mounting element designed for the rear left part of the body. Thanks to its factory origin from the Mercedes range, it ensures proper anchoring of the child seat, consistent with the seat construction and the manufacturer's safety requirements. This is a practical solution for users who want to restore the full functionality of the ISOFIX mount after disassembly or interior repairs.

Specifications and technical data

• SKU: A1779201700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1779201700
• Substitutable numbers: A1779201700, A 177 920 17 00, KD
• Location on the vehicle: Rear, Left
• Category: Additional Seat Parts

Purpose and Function of the ISOFIX Mount

The rear left ISOFIX mount is responsible for a stable connection between the child seat and the vehicle's structure. This element operates in the rear seat area, where precise alignment with the factory mounting points is crucial. Using an original mount allows for maintaining:

• the correct geometry of the ISOFIX anchors relative to the seat,
• proper interaction with the factory seats,
• compliance with the homologation specified by the vehicle manufacturer.

This ensures that the child seat can be installed in a repeatable and predictable manner, which directly impacts passenger safety.

Original Origin and Compatibility

The offered mount comes from the Mercedes parts line, meaning it has been specifically designed for the seat structure of this W177 model family. The original mounting element ensures:

• precise fit with the factory mounting points in the body,
• maintenance of the connection stiffness intended by the manufacturer,
• no need for structural modifications to the seat or body.

For safety systems like ISOFIX, using parts that comply with OEM documentation is particularly important for maintaining predictable vehicle behavior during a collision.

Mounting Characteristics – Rear, Left Side

The ISOFIX mount is intended for installation in the rear left part of the vehicle. This location requires adaptation to the specific geometry of the seat and anchoring points in the floor or seat structure. In practice, this means that:

• the element works with the left side of the rear bench seat,
• it allows for child seat installation in a position consistent with the car manufacturer's recommendations,
• it facilitates order in the routing of belts and ISOFIX anchors.

Thanks to its proper placement on the vehicle, the user gains a predictable and repeatable seat mounting point, which reduces the risk of errors during daily use.

Item Condition and Benefits of Choosing a Used Part

The presented ISOFIX mount is a used part, sourced from disassembly. In practice, this means it retains its factory construction and operating characteristics while offering a lower cost compared to a new component. For many users, this is a sensible compromise between quality and budget, especially for interior repairs or restoring missing elements after previous modifications.

To better select the right component for your car and avoid mistakes when purchasing used parts, it is worth consulting the practical tips described in the article No More Wrong Purchases! How to Professionally Select Used Car Parts, Saving Time and Nerves.

Expanding the ISOFIX System in a Mercedes

If you are planning a comprehensive repair or modernization of the rear seating area in your Mercedes and need other elements from the same group, such as additional mounts, brackets, or mounting hardware, check the available parts in the category Other Mercedes Seat Parts.

Selecting elements from the same construction group ensures technical consistency of the entire seat system, which translates to ease of installation, aesthetic finish, and predictable behavior of safety systems, including ISOFIX.