Mercedes W177 Hatchback Trunk Tailgate Hinge Left N/S Cosmic Black Metallic 191

The Mercedes W177 Hatchback Trunk Lid Hinge Left Cosmic Black 191 is an original body part designed for precise guidance and support of the trunk lid on the left side. Thanks to its factory fit to the body structure, it ensures stable lid operation, correct cover suspension geometry, and an aesthetic finish in Cosmos Black Metallic. This is a practical solution for users who want to restore proper trunk lid functionality while maintaining visual consistency with the body paint.

Specifications and technical data

• SKU: A1777403500-KB
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777403500
• Substitutable numbers: A1777403500, A 177 740 35 00
• Location on the vehicle: Left
• Color: Kosmos Black Metallic - 191
• Category: Lift Supports, Latches, Hinges & Additional Parts

Purpose and Function of the Trunk Lid Hinge

The presented hinge is dedicated to the W177 series hatchback body, where it is responsible for the stable guidance of the trunk lid on the left side. The element works in conjunction with the right hinge and gas springs, transferring loads resulting from the lid's weight and closing forces. A correctly selected hinge limits the risk of cover distortion, uneven gaps, and excessive strain on the lock.

Proper fit to a specific body generation allows for the preservation of factory mounting points, which facilitates installation and minimizes the need for additional adjustments. This is particularly important for post-accident repairs or replacement of worn-out components of the trunk opening mechanism.

Cosmos Black Metallic 191 Color and Visual Match

The hinge is finished in the shade of Cosmos Black Metallic - 191, allowing for a seamless match with a body painted in the same color. This ensures that after installation, the part does not visually stand out from the rest of the car body, and the trunk lid area maintains a uniform, tidy appearance. This solution is particularly beneficial for repairs where minimizing the scope of additional painting is desired.

The factory surface finish contributes to resistance against typical operational loads in the rear of the body, such as frequent opening and closing of the lid or exposure to variable weather conditions.

Installation and Usage Characteristics

The hinge is designed for installation at the factory mounting points on the left side, allowing for the preservation of the original lid operating geometry. The construction is designed to work with factory gas springs, the lock, and the lid panel, ensuring smooth opening and secure closing.

When replacing the element, it is recommended to:

• check the condition of the opposite hinge and gas springs,
• verify the alignment of the gaps between the lid, fenders, and bumper,
• check the operation of the lock after installation to avoid excessive stress.

This approach allows for the restoration of proper operation of the entire trunk opening system, not just a single component.

Benefits of Choosing an Original Used Part

Choosing an original, salvaged trunk lid hinge is a sensible compromise between quality and repair cost. The part retains its factory geometry, meaning it fits the body structure without modifications, while also reducing expenses compared to a new part. A used component of this class is well-suited for both post-accident repairs and the replacement of mechanically worn-out hinges.

If you want to better understand how a conscious choice of salvaged parts impacts the environment and vehicle operating costs, it's worth reading the article: Circular Economy in Your Garage – How Choosing Used Salvaged Parts Truly Supports Environmental Protection and Your Wallet?. This is a practical addition to your knowledge when planning body and other component repairs.

Expanding Repairs within the Rear Lid Area

If you are planning a comprehensive repair or upgrade of the rear trunk lid area on your Mercedes and need other parts from the same group, such as additional hinges, locks, or support springs, check the available parts in the category Gas Springs, Locks, Hinges, and Other Mercedes Parts.