Mercedes W177 Fuel Flap Cover Filler Fill In Flap Polar White - 149

Mercedes W177 Fuel Flap Cover Filler Fill In Flap Polar White is an original body component from the Fuel filler covers and accessories group, designed for the rear section of the vehicle. Thanks to its factory fitment and paint finish in Polar White - 149, it allows for an aesthetically pleasing and technically correct replacement of a damaged fuel flap on your Mercedes, without the need for additional modifications. This used OEM component is a sensible service solution that combines proper functionality with repair cost control.

Specifications and technical data

• SKU: A1777571700-POL
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777571700
• Substitutable numbers: A1777571700, A 177 757 17 00
• Location on the vehicle: Rear
• Color: Polar White - 149
• Category: Fuel Flaps & Components

Purpose and function of the component

The fuel flap cover on the Mercedes W177 model is responsible for protecting the fuel filler from contaminants and weather conditions, while also ensuring the visual consistency of the rear bodywork. A correctly selected component ensures:

• maintenance of the fuel filler area seal,
• protection against dust, water, and road salt,
• preservation of the factory body lines in the rear of the vehicle,
• aesthetic matching to the Polar White body paint.

Color and paint matching

The factory color Polar White - 149 is one of the popular shades used on modern Mercedes vehicles, which facilitates the visual matching of the component to the existing paint. In practice, this means:

• a consistent shade with the remaining body panels,
• no need for immediate repainting when the car color is correctly matched,
• reduction of tonal differences typical of non-factory replacements.

For the best visual effect, it is worth comparing the vehicle's body color with the paint code and verifying the match under natural lighting conditions.

Placement on the vehicle and assembly aspects

The component is intended for installation in the rear part of the vehicle, in the fuel filler area. The original design of the cover allows for the use of factory mounting points, which facilitates service work and reduces the risk of issues with the flap's geometry. In practice, this means:

• compatibility with the factory opening and closing mechanism,
• proper adhesion to the fender panel,
• maintenance of correct gaps between body elements.

Before installation, it is recommended to check the condition of the hinge, spring, and opening mechanism to avoid the need for further intervention in the near future.

Characteristics of the original used part

The offered fuel flap cover is an original Mercedes component, sourced from dismantling. A used body part is a good choice when you care about:

• maintaining factory fitment quality,
• avoiding geometry and fitment issues typical of cheaper replacements,
• reducing repair costs while maintaining OEM standards.

Used condition means that the element may show signs of wear consistent with the vehicle's age, but it remains functional and suitable for further use after proper installation.

Technical support and selection by numbers

When selecting a fuel flap cover for a specific body version and model year, it is worth using the manufacturer's markings and vehicle documentation. Helpful steps include:

• checking compatibility via catalog numbers in service systems,
• verification by paint code,
• comparing the shape and mounts with the removed element.

To better understand the role of the fuel filler area in the entire fuel system and the importance of correct component selection, it is worth reading the guide: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Ecology and cost-effectiveness of using used parts

Choosing a used fuel flap cover is not only a saving but also a real reduction of the environmental footprint through the reuse of functional body components. If you want to better understand the impact of such service decisions on the environment, see the article: Sustainable automotive: How purchasing original used parts reduces the carbon footprint and protects the environment?.

If you are planning a comprehensive repair or upgrade of the fuel filler area in your Mercedes and need other elements from the same group, such as flaps, hinges, or additional covers, check the available parts in the category Mercedes fuel filler covers and accessories.