Mercedes-Benz A-Class W168 Trunk Lid Tailgate Lock Latch Catch A1687400491

Mercedes-Benz A-Class W168 Trunk Lid Tailgate Lock Latch Catch is an original locking component designed for the rear tailgate in Mercedes W168 series vehicles. This used OEM part ensures proper cooperation with the factory locking mechanism and the vehicle's electrical system, resulting in stable and predictable operation of the locking system.

Specifications and technical data

• SKU: A1687400491
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1687400491
• Substitutable numbers: A1687400491, A 168 740 04 91, EM

Function and application of the tailgate lock

The tailgate lock in the W168 model is responsible for securely locking the rear lid, keeping it in a stable position while driving, and ensuring proper interaction with the rods and opening mechanism. A correctly selected component eliminates issues with the lid not closing properly, opening on its own, or having play, which affects both user comfort and the protection of transported cargo.

The original design of the lock is matched to the geometry of the W168 lid and body, ensuring that the correct mounting points, the range of motion of the lock tongue, and compatibility with the factory striker are maintained. This allows for installation without modifications and preserves factory assembly tolerances.

Benefits of using an original Mercedes component

Using a lock from the original Mercedes production line ensures:

• compliance with factory dimensional tolerances of the lid and body,
• proper cooperation with the opening mechanism from both the outside and inside,
• correct locking with standard lid closing force,
• maintenance of rear body seal integrity by securely pulling the lid against the seals.

As a result, the lock operates in a predictable manner, and the user retains the factory feel when opening and closing the trunk. This is particularly important for vehicles used on a daily basis, where consistent performance and the lack of need for frequent adjustments are essential.

Characteristics of the used part

The presented tailgate lock is a used component, which allows for a reasonable purchase cost while maintaining the manufacturer's original specifications. Such components come from the dismantling of vehicles where the locking system operated under intended conditions, allowing them to be reused in other W168 units.

In the case of used locks, it is particularly important that the locking mechanism and springs operate smoothly, without jamming or excessive play. This allows for installation as a replacement for a damaged or worn lock that causes closing problems or requires excessive force to close the lid.

If you have any doubts regarding the choice of second-hand parts, it is worth reading the article "Used car parts: myths and facts you need to know", which explains when purchasing a used component is technically justified.

Selection and installation in the Mercedes W168

The lock has been designed specifically for the rear tailgate of the W168 body, which means it is matched to:

• factory mounting points in the lid panel,
• the original striker in the rear panel,
• the existing system of rods and opening levers.

When correctly selected for the vehicle model, installation is usually limited to removing the old component and installing the new lock at the same points, while maintaining the correct alignment with the striker. After installation, it is recommended to check the operation of the lid through several opening and closing cycles and make any necessary adjustments within the limits provided by the manufacturer.

Summary

Mercedes-Benz A-Class W168 Trunk Lid Tailgate Lock Latch Catch is a practical solution for users who want to restore the proper operation of the rear tailgate without compromising the manufacturer's original specifications. This used, factory component allows for compatibility with the body structure, ensures stable locking, and represents a reasonable choice for repairing the trunk locking system in the W168 model.