Mercedes R171 Strut Stiffening Brace Bar Underbody Support Left N/S A1715240547

Mercedes R171 Strut Stiffening Brace Bar Underbody Support Left N/S is an original structural body component, designed for precise reinforcement of the left side of the vehicle. As part of the Clamps, clips, flanges and mounting parts group, it ensures stable fastening of adjacent components and helps maintain the correct body geometry. This used OEM part is a sensible choice for structural repairs where fitment, durability, and compliance with factory mounting points are essential.

Specifications and technical data

• SKU: A1715240547
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1715240547
• Substitutable numbers: A1715240547, A 171 524 05 47
• Location on the vehicle: Left
• Category: Clamps, Flanges, Hangers & Hardware

Purpose and function of the component

The presented support acts as a strut and beam reinforcement on the left side of the vehicle, functioning as part of the load-bearing system. It is responsible for the rigid connection of selected structural points, which limits unwanted deflection and improves body behavior under load. A properly selected and installed component of this type is important for:

• restoring geometry after bodywork repairs,
• eliminating play in the mounting zones,
• maintaining structural stability over a long period of operation.

Placement on the left side of the vehicle allows for clear identification of the mounting position and minimizes the risk of errors when selecting parts.

Construction and mounting fitment

As a component from the Clamps, clips, flanges and mounting parts group, the support has been designed for stable, multi-point fastening. The factory holes and profile shape are matched to the body of the specific model, which facilitates installation without the need for modifications. Thanks to this:

• original mounting points are preserved,
• installation time is shorter,
• the risk of stress resulting from improper fitment is reduced.

The used OEM part maintains geometry consistent with factory specifications, which is particularly important during post-collision repairs or when replacing damaged reinforcements.

Benefits of using an original support

Using an original left-side beam reinforcement support provides a number of practical service and operational benefits:

• Factory fitment – no need to adjust holes or shape, which translates into predictable installation.
• Structural consistency – maintaining the stiffness designed by the manufacturer in a given body area.
• Seamless integration with adjacent fastening elements, clamps, and clips.

For workshops and users, this means a lower risk of complaints and a stable repair effect in the long term.

Using a used part in Mercedes repairs

In the case of older models, choosing a used OEM component is often the most rational solution – it allows for maintaining original quality and construction while optimizing costs. The Mercedes R171 Strut Stiffening Brace Bar Underbody Support Left N/S will work well both for post-accident repairs and for replacing excessively corroded or mechanically damaged components.

If you want to better understand how to effectively use dismantled components when servicing older vehicles, it is worth reading the guide: No parts at the dealership? How to handle the repair of older models using dismantled parts. The article discusses a practical approach to selecting used components and their safe application.

Expanding repairs within mounts and reinforcements

If you are planning a comprehensive repair or upgrade of the mounting and structural reinforcement zone in your Mercedes and need other elements from the same group, such as additional clamps, clips, or mounting flanges, check the available parts in the Mercedes Clamps, clips, flanges and mounting parts category.