Tailgate Lock Mercedes GL X164 W251 Rear Trunk Latch Mechanism Catch A1647400735

Tailgate Lock Mercedes GL X164 W251 Rear Trunk Latch Mechanism Catch is an original component from the Tailgates and rear parts group, designed for installation in the rear section of the vehicle body. It ensures secure locking of the trunk lid, stable operation of the closing mechanism, and proper integration with the vehicle's electrical system. This is a practical solution for users who want to restore full functionality to the tailgate while maintaining the factory design.

Specifications and technical data

• SKU: A1647400735
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1647400735
• Substitutable numbers: A1647400735, A 164 740 07 35
• Location on the vehicle: Rear
• Category: Boot & Hatch Lids

Purpose and function of the tailgate lock

The presented lock is designed to operate in the rear body section, where it is responsible for securely closing the trunk lid. A properly functioning locking mechanism:

• keeps the trunk lid in a stable position while driving,
• limits the ingress of noise and contaminants into the cargo area,
• supports the correct operation of sensors indicating that the tailgate is closed (if present in the vehicle),
• ensures convenient trunk operation in daily use.

Thanks to its adaptation to the specific body design of the Mercedes GL X164 / W251, the lock works in harmony with factory hinges, actuators, and seals, which facilitates installation and subsequent operation.

Construction and body fitment

The tailgate lock is a mechanical component intended for installation in the rear of the vehicle. The design has been prepared to:

• ensure proper positioning of the tailgate relative to the body,
• maintain appropriate pressure against the seals,
• preserve compatibility with the factory opening and closing system.

Proper fitment to the geometry of the tailgate translates into even closing and reduces the risk of play or rattling while driving. This is particularly important in larger body types like the GL, where the weight of the trunk lid is higher than in compact cars.

Characteristics of the used component

The offered lock comes from the used original parts segment, which means it retains the factory design and purpose. This type of component is a good choice when:

• the existing lock has suffered from mechanical wear or damage,
• there are problems with closing or keeping the tailgate in the closed position,
• an economical repair is necessary while maintaining the original vehicle specifications.

Choosing a used lock allows for reduced service costs while maintaining compliance with the solutions provided by the vehicle manufacturer.

Benefits of using an original tailgate lock

Using a lock dedicated to a specific body series brings a number of practical benefits:

• Factory fitment – the element is structurally prepared to work with the tailgate and body of the given model, which facilitates installation and adjustment.
• Stable mechanism operation – proper locking of the tailgate affects the comfort of using the trunk and reduces unwanted noises while driving.
• Safety of transported cargo – a properly functioning lock reduces the risk of accidental opening of the trunk lid.
• Consistency with other Tailgates and rear parts – the lock works with hinges, actuators, and seals, creating a unified closing system.

If you are planning a comprehensive repair or modernization of the rear body area in your Mercedes and need other elements from the same group, such as tailgate hinges, lifting actuators, or additional mounting elements, check the available parts in the Mercedes Tailgates and rear parts category.

Practical installation and operational tips

When replacing the tailgate lock, it is worth paying attention to a few technical aspects:

• checking the condition of the hinges and actuators to avoid excessive load on the new lock,
• verifying the alignment of the tailgate relative to the body after installation,
• verifying the operation of the opening mechanism from inside the vehicle and from the outside.

A correctly installed lock restores convenient trunk operation and allows for continued, trouble-free vehicle use in daily conditions.

If you are interested in the broader context of using used components and want to better understand how to combine savings with care for the technical condition of the car, the following article may be helpful: Used car parts – a way for style and savings.