Mercedes X156 Fuel Filler Pot Flap Cover Carrier Cap Recess A1566304300

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes X156 Fuel Filler Pot Flap Cover Carrier Cap Recess is a precisely engineered fuel filler housing component designed for vehicles with petrol engines. This component is responsible for the secure seating of the filler cap recess, the aesthetic finishing of the rear bodywork, and the protection of the filler area against contaminants and moisture. By maintaining factory geometry, it serves as a functional service solution for post-collision repairs or the replacement of a damaged flap.

Specifications and technical data

• SKU: A1566304300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1566304300
• Substitutable numbers: A1566304300, A 156 630 43 00
• Location on the vehicle: Rear
• Fuel type: Petrol
• Category: Fuel Tank Caps

Purpose and function in the vehicle

The described fuel filler flap is a body component mounted in the rear part of the car, in the fuel filler area. Its tasks include:

• stable positioning of the fuel filler cap recess relative to the bodywork,
• protection of the filler area against dirt, water, and minor mechanical damage,
• maintaining proper access to the cap during petrol refueling,
• preserving the consistent styling line of the vehicle's rear section.

The solution is adapted for petrol supply systems, ensuring proper compatibility with the fuel system and standard caps used in Mercedes X156 models.

Compatibility and technical aspects

The element has been developed for the X156 series body, maintaining factory mounting points and the correct recess geometry. This allows for:

• restoring the original lines of the sheet metal and plastic in the filler area,
• proper fitment with the external flap and surrounding body components,
• maintaining the seal and correct routing of the fuel filler pipe.

The product belongs to the Fuel filler flaps and caps group, which facilitates selection during accident repairs and when replacing worn or damaged components within the fuel filler area.

Performance characteristics of the used part

The offered component is a used part, sourced from dismantling, which provides a cost-effective solution while maintaining the original construction. In practice, this means:

• factory fitment to the body without the need for modifications,
• suitability for use in body and paint repairs as a replacement part,
• an attractive price-to-functionality ratio compared to new aftermarket replacements.

For workshops and service centers specializing in the Mercedes brand, this is a practical service solution for restoring the fuel filler area after mechanical damage or corrosion.

Installation and maintenance tips

When installing the fuel filler flap in the rear of the vehicle, it is worth paying attention to:

• correct alignment of the recess relative to the bodywork to ensure the external flap opens freely,
• checking the condition of seals and components guiding the filler pipe,
• verifying the operation of the opening mechanism after assembling the entire module.

Due to operation in an area exposed to water, salt, and dirt, regular inspection of the fuel filler surroundings helps maintain mounting stability and body aesthetics in the long term.

Related components and technical knowledge

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 additional flaps, brackets, or cap recesses, check the available parts in the Mercedes fuel filler flaps and caps category.

To better understand the relationship between the filler recess and the rest of the supply system, it is worth consulting a guide describing the diagnostics and operation of the fuel system – detailed information can be found in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration".

For users looking for savings while maintaining the efficiency of other vehicle components, a guide on the cooling system may also be useful, available in the material "Summer heat vs. cooling system: used radiators and fans as a guarantee of savings", which complements knowledge about the operation of key car systems.