Mercedes W177 Fuel Filler Neck Tank Filler Recess Rear Fender A1776308102

Mercedes W177 Fuel Filler Neck Tank Filler Recess Rear Fender is an original body component designed for installation in the rear section of the vehicle, in the fuel filler area. Thanks to its factory geometry, it ensures precise alignment with the fender line and proper seating of the fuel flap and filler hoses, which translates into stable mounting of the entire fuel filler assembly.

Specifications and technical data

• SKU: A1776308102
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1776308102
• Substitutable numbers: A1776308102, A 177 630 81 02
• Location on the vehicle: Rear
• Category: Other Exterior Parts & Accessories

Purpose and function of the component

The fuel filler recess in the Mercedes W177 model is responsible for the stable seating of the filler neck and guiding the fuel flap in the rear part of the body. This component contributes to the structure of the rear fender, ensuring:

• maintenance of the correct position of the filler relative to the body panel,
• proper fitment with the fuel filler flap,
• tightness and protection against external contaminants,
• correct transfer of loads from the filler area to the fender structure.

As a result, the refueling system remains functional, and the body line maintains a consistent, aesthetic appearance.

Construction and fitment to the rear fender

The recess is designed as an integral part of the rear body zone, with appropriately shaped mounting edges. This allows for:

• precise adjustment to the contours of the rear fender,
• stable mounting to factory structural points,
• maintenance of proper assembly clearances for the flap and seals.

Such a solution reduces the risk of stress within the body panel and facilitates maintaining even gaps between body components, which is important both from a visual and operational perspective.

Mounting characteristics of the rear part of the vehicle

The location on the vehicle in the rear body zone means that the component works with the fender structure, internal reinforcements, and the fuel line system. In practice, this translates into:

• easier restoration of factory geometry after bodywork repairs,
• the ability to restore the correct position of the filler after damage to the side of the body,
• better protection of the filler zone against water, mud, and road salt.

In the case of post-accident repairs, using an original fuel filler recess helps to limit the need for additional adjustments and bodywork corrections.

Condition of the component and use in repairs

The offered fuel filler recess comes from a used vehicle, which makes it a practical choice for body repairs, especially when maintaining factory specifications is a priority. The used component allows you to:

• recreate the original mounting layout in the rear part of the body,
• minimize repair costs while maintaining compliance with the manufacturer's design,
• maintain visual and technical consistency in the fuel filler area.

This solution will work well both for local repairs after minor damage and for more extensive reconstruction of the rear part of the vehicle.

Integration with other Mercedes body components

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 internal reinforcements, body panel sections, or accessory mounts, check the available parts in the Other Mercedes category.

If you are interested in comparing design solutions used in sports body versions and powertrains, an article discussing the differences between production models and high-performance versions may be helpful – you can find them in the material Audi RS vs other models – what is hidden under the hood and chassis?, which allows for a better understanding of how manufacturers approach the design of key vehicle zones.