Mercedes ML W164 Trunk Hydraulic Boot Lid Tailgate Hinge Arm Rear A1647400018

The Mercedes ML W164 Rear Tailgate Actuator Hinge Arm is an original component of the tailgate lifting mechanism, designed for installation at the rear of the vehicle body. Thanks to its factory geometry and appropriately selected stiffness, it ensures stable actuator operation and proper guidance of the entire system. This is a practical solution for users who want to restore the correct functionality of the tailgate without altering the vehicle's structure.

Specifications and technical data

• SKU: A1647400018
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1647400018
• Substitutable numbers: A1647400018, A 164 740 00 18
• Location on the vehicle: Rear
• Category: Lift Supports, Latches, Hinges & Additional Parts

Intended Use and Function of the Component

The rear tailgate actuator hinge arm is responsible for transferring loads between the actuator and the vehicle body structure at the rear of the car. A correctly selected and fitted component:

• maintains the correct geometry for opening and closing the tailgate,
• ensures smooth actuator operation without jamming,
• reduces the risk of excessive play and noise in the trunk area,
• supports even distribution of forces in the tailgate mounting zone.

Its placement at the rear of the vehicle means the component operates under conditions exposed to temperature changes, moisture, and dynamic loads, making the use of the correct hinge arm crucial for the durability of the entire mechanism.

Compatibility with Mercedes ML W164

The presented rear tailgate actuator hinge arm for Mercedes ML W164 is structurally designed to work with the factory tailgate lifting system in this model. This means:

• compatibility with original mounting points in the body,
• no need for structural modifications,
• preservation of the factory opening and closing range of the tailgate,
• consistency with other tailgate mechanism components (actuator, hinges, mounts).

This allows for an organized installation, adhering to service standards typical for the Mercedes brand.

Characteristics of the Used Component

The offered arm comes from the Gas Springs, Locks, Hinges, and Other Parts group, meaning it is designed to operate in systems responsible for opening, supporting, and locking body elements. As a used part, it represents an attractive solution for drivers who:

• are looking for a technically compatible replacement at a reasonable budget,
• want to restore the functionality of the rear tailgate without investing in a complete new mechanism,
• prefer original disassembled components over cheap, unknown alternatives.

A correctly selected hinge arm can reduce wear on the actuator and other mounting components, leading to more predictable vehicle operation.

Technical Support and Additional Information

Before purchasing, it is advisable to verify the component's compatibility with your vehicle using data such as SKU (), OEM part number (), and available reference numbers (). This information facilitates the selection of the correct hinge arm for your specific car configuration.

If you are planning a comprehensive repair or upgrade of the rear tailgate area in your Mercedes and need other parts from the same group, such as additional hinges, actuator mounts, or guide elements, check the available parts in the Gas Springs, Locks, Hinges, and Other Mercedes Parts category.

For users interested in the durability of four-wheel-drive systems and the selection of appropriate components for premium vehicles, an article describing various AWD solutions may be useful, available at the link: xDrive, 4Matic, quattro or 4Motion – comparison of AWD drives from BMW, Mercedes, Audi and VW. This article helps to better understand the specifics of operating cars equipped with advanced drive systems and facilitates informed selection of replacement parts.