Mercedes A-Class W168 Tailgate Lock Hatchback Tail Gate Lock Catch A1687400336

Mercedes A-Class W168 Tailgate Lock Hatchback Tail Gate Lock Catch is an original component from the Locks and latches group, designed for the tailgate of the Mercedes A-Class W168 model. This used lock ensures proper latching of the trunk lid, stabilizes its position while driving, and allows for correct operation with the opening mechanism and the vehicle's electrical system.

Specifications and technical data

• SKU: A1687400336
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1687400336
• Substitutable numbers: A1687400336, A 1687400336, A 168 740 03 36, Mercedes-Benz, EM
• Category: Exterior Locks & Lock Hardware

Purpose and function of the tailgate lock

The presented lock is dedicated to the tailgate of the Mercedes A-Class W168 generation and is responsible for the mechanical latching and releasing of the trunk lid. The component works with rods, the exterior handle, or the internal opening mechanism, ensuring secure closure of the tailgate and preventing it from opening unintentionally while driving.

Thanks to a design that complies with the manufacturer's factory standards, the lock maintains the correct mounting geometry and proper positioning relative to the striker in the bodywork. This allows for precise closing of the tailgate, reduction of play, and proper sealing of the gaskets in the rear part of the vehicle.

Construction and technical features

As a component from the Locks and latches group, the tailgate lock uses an internal ratchet mechanism that locks it into the operating position once the tailgate is closed. The design is intended for use with factory mounting points in the tailgate panel, which facilitates installation without the need for modifications.

The mechanism has been designed for operation in the rear zone of the body, where it is exposed to temperature changes, moisture, and vibrations. The appropriate geometry of the working elements promotes repeatable latching and reduces the risk of the tailgate accidentally popping open when driving over uneven surfaces.

Benefits of using an original lock

Using an original tailgate lock in a Mercedes A-Class W168 allows you to maintain the factory operating parameters of the rear lid. Key advantages include:

• perfect fit to factory mounting points in the tailgate and body,
• proper cooperation with the existing opening and latching mechanism,
• maintaining the correct position of the tailgate relative to the body after closing,
• reduction of rattling and play in the rear part of the vehicle.

As a result, replacing a damaged or worn component with an original lock from the same design group helps restore the convenience of using the trunk and improves the overall functionality of the rear of the vehicle.

Condition, verification, and service application

The offered lock is a used component, which in workshop practice often provides a cost-effective solution while maintaining compliance with factory specifications. This type of part is suitable for both routine maintenance replacements and post-accident repairs of the rear body zone, where it is necessary to restore full functionality to the trunk lid.

Before installation, it is recommended to perform a standard check of the mechanism's operation on the vehicle, adjust the position relative to the striker, and verify the cooperation with the rods and handle. A correctly selected and adjusted lock reduces the need for additional bodywork corrections and speeds up the completion of the repair.

Repair expansion and additional information

If you are planning a comprehensive repair or upgrade of the rear body zone in your Mercedes and need other components from the same group, such as latching mechanisms, strikers, or locks, check the available parts in the Mercedes Locks and latches category.

In situations where quick completion of service work and cost optimization are important, it is worth considering the use of verified used OEM components. You can find more about the impact of the availability of such parts on repair time in the article Availability of car parts off the shelf vs. repair time – how do used OEM parts shorten workshop stays?.