Smart Fortwo 451 Cabrio Pillar Bow Roof Folding Top Left N/S A4517700318

The Smart 451 Cabrio Folding Roof Pillar Trim Upper Left is an original structural component designed for the folding roof system in the Smart 451 series convertible. This part is responsible for the stable guidance and support of the upper section of the soft top on the driver's side, which is crucial for the proper functioning of the mechanism and the sealing of the body. Thanks to its factory origin from the Smart brand, the correct mounting points and geometry tailored to the Cabrio body are maintained.

Specifications and technical data

• SKU: A4517700318
• Mark: Smart
• Condition: Used
• OEM Part Number: A4517700318
• Substitutable numbers: A4517700318, A 451 770 03 18
• Location on the vehicle: Left
• Part type: Seal
• Category: Convertible Tops & Parts

Purpose and Function of the Component

The presented folding roof trim is dedicated to the Smart 451 convertible and is mounted on the left side of the vehicle. As the upper pillar of the roof structure, it works with other frame components, ensuring proper guidance of the fabric and maintaining adequate lateral stiffness. A correctly selected component in this area affects:

• the stability of the folding roof mechanism during opening and closing,
• maintaining the correct lateral position of the roof edge relative to the body,
• reducing stress in the soft top fabric during operation.

Benefits of Using an Original Smart Trim

Using an original roof trim in the Smart 451 convertible allows for the preservation of the factory geometry of the roof system. Proper fit to the body reduces the risk of improper closing, unwanted play, or incorrect fabric guidance. For the user, this means:

• more predictable operation of the folding roof mechanism,
• better alignment of the side elements in the roof area,
• easier installation due to the preservation of original mounting points.

Choosing a component from the Soft Tops for Convertibles and Parts group allows you to focus on components designed specifically for the demanding operating conditions of a convertible.

Installation Characteristics and Fitment

The trim is intended for installation on the left side of the vehicle, which is important when selecting parts for unilateral repairs. The mounting system and profile shape are adapted to the construction of the Smart 451 Cabrio body, ensuring the component works with the factory soft top frame. In practice, this facilitates:

• restoring the original roof geometry after a collision or component wear,
• reducing the need for additional modifications or adjustments,
• maintaining compatibility with other roof system components.

Part Condition and Service Application

The offered folding roof pillar trim comes from the used parts segment, allowing for an economical repair of the roof system while maintaining the original manufacturer's specifications. This type of component is particularly useful for:

• repairs after damage to the folding roof mechanism,
• restoring correct fabric guidance on the left side,
• servicing convertibles where the frame components have become deformed or worn.

Part Selection by Numbers and Additional Materials

When selecting structural roof components for a convertible, it is advisable to use manufacturer designations and reference numbers to avoid errors between body versions or mounting sides. In practice, it is helpful to compare data with the vehicle's documentation or VIN number, which facilitates the selection of the correct roof pillar trim.

If you want to better understand how to select original components by manufacturer and VIN numbers and how this translates to the durability of powertrains, it is worth reading the article describing the legendary Audi engine – The Audi Five-Cylinder Engine – A Legend from Quattro to RS3 and How to Care for it with Original Audi Parts. There you will find practical tips on using OEM numbers when choosing used parts.

If you are planning a comprehensive repair or upgrade of the folding roof area in your Smart and need other elements from the same group, such as guides, brackets, or additional structural profiles, check the available parts in the Soft Tops for Convertibles and Smart Parts category.