Mercedes W177 Saloon Trunk Tailgate Hinge Left N/S Mountain Grey 787 A1777500700

Mercedes W177 Saloon Trunk Tailgate Hinge Left N/S Mountain Grey 787 is an original body component designed for precise guidance and support of the trunk lid. Thanks to its factory origin, it ensures correct tailgate operating geometry and compatibility with the vehicle's body structure. This used part allows for an economical yet technically sound repair of the vehicle's rear section.

Specifications and technical data

• SKU: A1777500700-MG
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777500700
• Substitutable numbers: A1777500700, A 177 750 07 00
• Location on the vehicle: Left
• Color: Mineral Grau Metallic - B39
• Category: Boot & Hatch Lids

Purpose and function of the component

The presented hinge is designed for installation on the left side of the rear bodywork in the Mercedes A-Class W177 sedan model. It is responsible for the stable guidance of the trunk lid, proper load distribution, and maintaining the axis of rotation in the position intended by the manufacturer. A correctly selected hinge reduces stress on the body panels, minimizes the risk of deformation, and ensures repeatable closing of the lid.

Color and paint matching

The component is finished in the factory color Mountain Grey 787, which in many cases allows for avoiding a full repaint during body repairs. For users who want to maintain the visual consistency of the vehicle, the original paint shade makes it easier to match the existing coating and limits the scope of paint work to potential spot repairs.

Benefits of using an original hinge

Using a factory trunk lid hinge in a Mercedes W177 translates into a number of practical benefits:

• maintaining the stiffness of the connection between the lid and the body as designed by the manufacturer,
• proper guidance of the lid throughout the entire opening and closing range,
• reducing the risk of edges rubbing against adjacent body elements,
• easier adjustment of gaps and contact lines with the fenders and rear bumper,
• possibility of using existing mounting points without structural modifications.

For body shops and independent service centers, this means more efficient installation and shorter lid adjustment time, and for the end user – stable operation of the trunk opening mechanism.

Use in body repairs

The used trunk lid hinge is particularly suitable for repairs after rear-end collisions, replacing damaged mounting elements, or correcting lid operation after previous bodywork interventions. Replacing the hinge itself is often sufficient to restore the correct position of the lid without the need to interfere with the roof structure or side body panels.

If you are planning a comprehensive repair or upgrade of the rear body zone in your Mercedes and need other elements from the same group, such as hinges, mounts, or complete lids, check out the available parts in the Mercedes trunk lids and rear parts category.

Component condition and installation aspects

The offered hinge comes from dismantling, which allows for maintaining factory geometry and original mounting points. Before installation, it is recommended to perform a standard inspection of the working surfaces, threads, and contact points with the lid and body, as well as to apply appropriate anti-corrosion agents at the connection points. A correctly installed component allows for precise adjustment of the lid position relative to adjacent panels, which has a direct impact on the tightness and comfort of using the trunk.

Additional technical information

The product belongs to the Trunk lids and rear parts group, which means it is designed to work with other components of the rear body section – actuators, locks, seals, and outer panels. For users interested in a broader range of repair and component replacement topics in vehicles, the following guide may be useful: Buying a used engine: 5 things you must check before installation. Although it concerns a different group of parts, it well illustrates the approach to verifying used components before installation.