Mercedes W164 Trunk Tailgate Hinge Rear Left N/S Obsidian Black Metallic 197

The Mercedes W164 Trunk Lid Hinge Rear Left is an original part from the Doors and door sheets group, designed for precise guidance and support of the rear lid in the body. The hinge ensures stable operation of the lid, proper alignment with the body, and maintains the original geometry of the rear of the vehicle, which is important for both user comfort and safety.

Specifications and technical data

• SKU: A1647400137-OB
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1647400137
• Substitutable numbers: A1647400137, A 164 740 01 37, ASZ
• Location on the vehicle: Rear, Left
• Color: Obsidian Black Metallic - 197
• Category: Doors & Door Skins

Purpose and Function of the Trunk Lid Hinge

The presented hinge is dedicated for installation in the rear left part of the body, in the trunk lid mounting area. It is responsible for:

• guiding the opening and closing movement of the lid along the correct axis,
• maintaining the correct position of the lid relative to the fenders and bumper,
• limiting play and unwanted vibrations during driving,
• cooperating with the lid lifting actuators and the lock.

By maintaining the original design, the hinge allows for correct gaps between body panels and reduces the risk of the lid edges rubbing against the bodywork.

Construction, Color, and Body Fitment

The hinge is designed as a structural element working on the lid's pivot axis, with appropriately selected geometry of its arms and mounting points. This solution allows for smooth opening and closing of the lid without excessive stress on the body panels and mounts.

An important advantage is its fitment with the paint color Obsidian Black Metallic - 197, which helps maintain visual consistency of the rear bodywork without the need for additional painting if the color matches the vehicle. In practice, this translates to a faster and more economical repair of the trunk area.

Benefits of Using an Original Part

Using an original trunk lid hinge for the Mercedes W164 model provides a number of practical benefits:

• Factory Fitment – maintaining the correct geometry of mounts and compatibility with the lid and body.
• Stable Lid Operation – reducing the risk of sagging, misalignment, or rubbing against adjacent elements.
• Improved Sealing of the Rear Body – proper lid closure contributes to maintaining trunk seal.
• Visual Consistency – matching color facilitates an aesthetic repair finish.

Replacing the hinge is particularly recommended after rear-end collisions, with visible lid deformations, or problems with its closure when adjustments do not provide a lasting effect.

Mounting Area and Practical Service Tips

The element operates in the critical rear body area, where maintaining appropriate rigidity and axial alignment is crucial. During installation, it is worth paying attention to:

• checking the condition of the mounts in the body and on the trunk lid,
• correctly setting the gaps between the lid and adjacent panels,
• checking the hinge's cooperation with the actuators and lock after adjustment is complete.

Careful installation of the hinge allows for restoring the comfort of using the trunk and reducing the loads acting on other elements of the rear body.

Why Choose a Used OEM Part

For body structural elements such as trunk lid hinges, using a used OEM component is often a cost-effective solution while maintaining high quality of workmanship. An original hinge retains its factory geometry and is designed for specific loads and operating ranges within a given model.

If you want to better understand when a used original part is a sensible choice compared to an aftermarket alternative, it's worth reading the practical tips in the article 5 Reasons Why a Used OEM Part is a Better Choice Than an Aftermarket Replacement.

Completing Rear Body Repairs

If you are planning a comprehensive repair or upgrade of the rear area of your Mercedes and need other parts from the same group, such as door panels, reinforcements, or exterior panels, check the available parts in the Mercedes Doors and door sheets category.