Smart Fortwo C451 Cabrio Boot Trunk Lid Lock Threaded Plate Cover A4517420011

Smart Fortwo C451 Cabrio Boot Trunk Lid Lock Threaded Plate Cover is an original component from the Internal locks and latches group, designed to secure the trunk lid lock mechanism in the cabrio version. This used OEM part ensures proper coverage and stable guidance of the lock, which translates into reliable closing and correct operation of the entire tailgate mechanism.

Specifications and technical data

• SKU: A4517420011
• Mark: Smart
• Condition: Used
• OEM Part Number: A4517420011
• Substitutable numbers: A4517420011, A 451 742 00 11
• Category: Interior Locks & Lock Hardware

Purpose and function of the trunk lock cover

The trunk lock cover in the Smart Fortwo C451 Cabrio model is responsible for protecting the internal part of the locking mechanism against dirt, moisture, and minor mechanical damage. A properly selected element from this group:

• stabilizes the operation of the trunk lock,
• limits the ingress of contaminants into the latch zone,
• supports smooth closing and opening of the tailgate,
• maintains the aesthetic appearance of the inner part of the tailgate.

Thanks to the use of an original cover from the Internal locks and latches group, the factory geometry of the mounts and the correct guidance of moving parts are preserved.

Construction and fitment for Smart Fortwo C451 Cabrio

The presented cover has been designed specifically for the tailgate construction of the Smart Fortwo C451 Cabrio, taking into account the characteristic hinge layout and lock guidance in the soft-top version. This means:

• factory mounting points matched to the C451 body,
• compatibility with the original trunk lock mechanism,
• maintaining the correct alignment of the latch relative to the striker.

Such fitment facilitates installation and minimizes the risk of problems with closing the tailgate after replacing the component.

Characteristics of the used part

As a used part, the Smart trunk lock cover retains its original construction and geometry, which is particularly important for components responsible for locking. In practice, this means:

• preservation of factory dimensional tolerances,
• no need for mounting modifications,
• possibility of direct replacement of a damaged cover with a functional OEM element.

This solution allows for restoring the proper operation of the trunk mechanism without interfering with the body structure.

Application in the internal locks and latches system

The trunk lock cover is part of a larger system, where it works with the latch, striker, and tailgate guides. A properly selected element:

• reduces play in the lock zone,
• reduces the risk of the mechanism jamming,
• supports even load distribution when closing the tailgate.

This is particularly important in the cabrio body, where the rear part of the vehicle operates under different conditions than in versions with a classic roof.

If you are planning a comprehensive repair or upgrade of the trunk lock area in your Smart and need other elements from the same group, such as covers, latches, or internal mounting elements, check the available parts in the Smart Internal locks and latches category.

Why choose original OEM components

In the case of elements responsible for locking and the safety of the tailgate, the choice of original components has a direct impact on the durability and reliability of the system. A used OEM part:

• maintains the factory operating parameters of the mechanism,
• reduces the risk of the lock not closing or jamming,
• ensures consistency with other elements of the internal lock system.

If you are interested in a broader context of using original used parts in vehicle systems, it is worth reading an article discussing the advantages of factory components over uncertain replacements: Humming differential? Find out why a used OEM drive axle is a better investment than an uncertain replacement.