Mercedes W177 Rear Trunk Tailgate Hinge Left N/S Polar White 149 A1777403500

Mercedes W177 Trunk Lid Hinge Left Polar White 149 is an original body part from the Trunk Lids & Rear group, designed for installation on the left side of the rear of the vehicle. The hinge ensures stable lid guidance, correct operating geometry, and secure closing to the manufacturer's factory standard. Thanks to the factory finish in Polar White – 149, it allows for visual consistency of the bodywork without the need for additional painting (provided the vehicle's color matches).

Specifications and technical data

• SKU: A1777403500-POL
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777403500
• Substitutable numbers: A1777403500, A 177 740 35 00
• Location on the vehicle: Rear, Left
• Color: Polar White - 149
• Category: Boot & Hatch Lids

Purpose and Function of the Trunk Lid Hinge

The left trunk lid hinge in W177 series models is responsible for precise lid guidance during opening and closing, and for maintaining its correct position relative to the bodywork. Its placement on the rear left side of the vehicle allows for:

• stable lid support when fully open,
• even load distribution between the left and right sides,
• maintenance of proper body gaps and lines,
• reduction of stress on the lid panel and fenders.

Selecting the correct hinge for the specific side of the vehicle is crucial for the proper operation of the entire trunk opening mechanism.

Polar White – 149 Color and Visual Matching

The part is finished in the factory color Polar White – 149, widely used across the Mercedes model range. This allows for a uniform paint surface with no visible shade differences, provided the paint code matches the vehicle. This solution is particularly beneficial for:

• local post-accident repairs of the rear bodywork,
• replacing a damaged hinge without affecting the paint on the entire lid,
• maintaining the vehicle's original appearance after repair.

Factory painting of the hinge reduces repair time and minimizes the risk of color mismatch with the rest of the bodywork.

Technical Characteristics and Installation

The hinge is specifically designed for the rear left side of the Mercedes W177 body, ensuring correct mounting points and compatibility with the trunk lid structure. The appropriately selected geometry of the hinge arm enables:

• smooth opening and closing of the lid without jamming,
• maintaining the pivot axis in the factory-specified position,
• reduction of play and rattling while driving over uneven surfaces.

As a component from the Trunk Lids & Rear category, the hinge works in conjunction with other components in this area – the lid, gas struts, lock, and seals – forming a cohesive system responsible for convenient access to the luggage compartment.

Used Condition and Advantages of Choosing an Original Part

The offered hinge is in used condition, allowing for a favorable purchase price while maintaining factory construction and fit. Original manufacturing translates to:

• compliance with factory mounting points in the bodywork,
• correct interaction with the trunk lid and accessories,
• maintenance of the connection rigidity specified by the manufacturer.

Choosing an original hinge is particularly important for post-accident repairs where precise restoration of the rear body geometry and connection durability are paramount.

Rear Area Expansion and Additional Information

If you are planning a comprehensive repair or upgrade of the rear body area on your Mercedes and require other parts from the same group, such as lids, reinforcements, or mountings, check the available parts in the Mercedes Trunk Lids & Rear category.

For those considering broader vehicle modifications using aftermarket components, practical tips on safely selecting and installing used parts may be useful – you can find them in the article Tuning with Used Parts – How to Gain Performance Without Losing a Fortune, which describes an approach to car upgrades while maintaining common sense and functionality.