Mercedes W166 Diesel Fuel Filler Flap Cap Cover Diamond White Metallic - 799

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W166 Diesel Fuel Filler Flap Cap Cover Diamond White Metallic is an original body component designed for the rear section of the vehicle. It provides an aesthetic finish to the fuel filler area while protecting the diesel refueling system from contaminants. Thanks to the factory paint in the Diamond White Metallic – 799 shade, it allows for maintaining a consistent body appearance without the need for additional painting.

Specifications and technical data

• SKU: A1667570006-DWM
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1667570006
• Substitutable numbers: A1667570006, A 166 757 00 06
• Location on the vehicle: Rear
• Fuel type: Diesel
• Color: Diamond White Metallic - 799
• Category: Fuel Flaps & Components

Purpose and function of the component

The fuel filler flap is tailored to the rear body section of the Mercedes W166 model with a diesel engine. The component works with the diesel refueling system, shielding the cap and filler neck from water, mud, and minor mechanical damage. The design, intended for a specific fuel type, helps reduce the risk of refueling errors and keeps the fuel system area clean.

Exterior appearance and color matching

The factory paint in the Diamond White Metallic – 799 shade ensures consistency with the original Mercedes body color palette. The metallic coating harmonizes well with the body lines, and the precisely matched shade facilitates integration with the remaining rear panels of the vehicle. This is a practical solution when replacing a damaged flap – it allows for limiting the scope of paint work or eliminating it entirely if the condition of the coating is satisfactory to the user.

Benefits of using an original fuel filler flap

Using an original component from the Fuel filler flaps and accessories group translates into proper fitment with the bodywork and correct operation of the opening mechanism. The appropriate geometry and factory mounts facilitate installation and minimize the risk of leaks around the filler area. For the user, this means:

• maintaining the factory body line in the rear section of the vehicle,
• protection of the Diesel fuel filler area against dirt,
• aesthetic replacement of a damaged or scratched flap without interfering with the body structure.

Condition and service application

The used component will prove useful both for post-accident repairs and for replacing a worn-out cover in a daily-driven Mercedes W166. It is a reasonable service solution when the priority is to maintain the original design and compatibility with existing components, while simultaneously optimizing repair costs.

Expanding knowledge about the fuel system

To better understand the role of the filler area in the entire diesel engine supply path, it is worth familiarizing yourself with material discussing the diagnostics and operation of supply components. Practical information, tables, and answers to the most frequently asked questions can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Related body components in the fuel filler area

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