Mercedes R172 R231 Convertible Soft Top Roof Catch Lock Right O/S A1727900477

Mercedes R172 R231 Roof Latch Catch Bolt Right A1727900477 is a precise component of the convertible soft top mechanism for Mercedes vehicles, designed for the right side of the car. It is responsible for securely locking the roof structure, ensuring a safe closure, reducing vibrations, and proper body sealing while driving.

Specifications and technical data

• SKU: A1727900477
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1727900477
• Substitutable numbers: A1727900477, A 172 790 04 77, A 172 790 04 00, A1727900400, A 172 790 02 77, A1727900277
• Location on the vehicle: Right
• Part type: Latch
• Category: Convertible Tops & Parts

Roof Latch Purpose and Function

The presented roof latch, catch, and bolt is part of the Soft Tops for Convertibles and Parts category, working with the folding top structure and closing mechanism. Its functions include:

• mechanically locking the roof in the closed position,
• maintaining a stable connection between the roof and the body,
• reducing play, rattles, and unwanted structural movements at higher speeds,
• cooperating with other elements of the roof folding system to preserve correct geometry.

Its placement on the right side of the vehicle ensures compatibility with the factory-designed mounting points and locking positions specified by the manufacturer.

Compatibility and Replacement Numbers

This part is designed as an original Mercedes roof system component and has a dedicated OEM number and associated replacement numbers, facilitating professional identification in service catalogs. This allows for precise matching of the latch to the specific body configuration and equipment version, without the risk of installation issues.

To ensure you are selecting the correct roof latch for your car, it is advisable to verify compatibility using the OEM number or reference numbers from your vehicle's documentation or the manufacturer's catalog.

Installation and Usage Characteristics

The right-side roof latch is structurally designed for installation in factory mounting points, allowing for service replacement without altering the body structure. In practice, this means:

• maintaining the original roof closure geometry,
• proper cooperation with existing hinges, linkages, and guides,
• restoring correct roof closure after damage to the previous component.

This product is sourced from a dismantled vehicle, which for original Mercedes parts, ensures the preservation of factory fit and the operational characteristics of the roof mechanism.

Application in Service and Convertible Restoration

Replacing the roof latch, catch, and bolt is recommended when issues arise with roof closure, noticeable play, or leaks within the roof structure. Using an original component from the same assembly group allows for:

• reducing the risk of leaks and wind noise,
• restoring proper right-side roof locking,
• maintaining the technical integrity of the entire roof folding system.

For workshops specializing in Mercedes convertibles, this is a practical service solution, enabling efficient repairs without the need for structural modifications.

How to Select the Correct Roof Latch and Avoid Mistakes

To select the appropriate roof latch for a specific model, it is best to rely on the OEM number, replacement numbers, and information about its placement on the vehicle. If you have doubts about compatibility, factory number selection procedures and comparing the construction with the dismantled part will be helpful.

If you want to deepen your knowledge on how to flawlessly select used car parts, check out our guide: No More Wrong Purchases! How to Professionally Select Used Car Parts, Saving Time and Nerves, where you will find practical tips on verifying compatibility using OEM and reference numbers.

If you are planning a comprehensive repair or upgrade of the roof area in your Mercedes and need other parts from the same group, such as locking mechanisms, guides, or additional mountings, check the available parts in the category Soft Tops for Convertibles and Mercedes Parts.