Mercedes W176 Cover Fuel Filler Pot Flap Carrier Cap A1766300900

Mercedes W176 Cover Fuel Filler Pot Flap Carrier Cap is an original body component from the Fuel filler flaps and caps group, designed for W176 series models. It is a practical solution for users who need factory-fit quality, maintenance of the fuel system's seal, and a consistent look for the side body section of their Mercedes.

Specifications and technical data

• SKU: A1766300900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1766300900
• Substitutable numbers: A1766300900, A 176 630 09 00
• Category: Fuel Tank Caps

Purpose and function of the fuel filler flap

The fuel filler flap in a Mercedes W176 is responsible for protecting the fuel filler neck from dirt, moisture, and mechanical damage. A properly selected component ensures:

• consistent fit with the body line,
• stable closing and opening during daily use,
• protection of the fuel filler area against dirt and corrosion,
• maintenance of the body panel's aesthetics.

Thanks to the use of an original solution, the factory hinge geometry and kinematics are preserved, which translates into predictable operation over a long period of use.

Original Mercedes component – fit and compatibility

The presented flap comes from the Mercedes range, which means compliance with the manufacturer's factory standards regarding dimensions, mounting methods, and the operation of the opening mechanism. The component is assigned to a specific OEM reference and has associated interchangeable numbers, which facilitates compatibility verification by part number or vehicle VIN.

Such a solution is particularly beneficial for:

• post-accident repairs in the area of the rear fender or fuel filler zone,
• mechanical damage to the flap (e.g., tearing off, cracking, hinge seizure),
• restoring the vehicle to a factory-like state after previous non-factory modifications.

By maintaining the original design, it is possible to seamlessly use the factory mounting points and the standard opening mechanism in the door or at the flap.

Performance characteristics and installation

As an element from the Fuel filler flaps and caps category, the flap for the Mercedes W176 has been designed for daily, repetitive use during refueling. The design provides for multiple opening and closing cycles while maintaining stable guidance and proper pressure against the body.

In practice, this means that with correct installation:

• the flap operates smoothly throughout its entire range of motion,
• it does not cause excessive stress in the mounting area,
• it does not require additional bodywork modifications or interference with the car body.

The condition described as used means that the component comes from dismantling, which in many cases allows for obtaining factory-quality fitment at a more favorable cost compared to a new part.

Benefits of using an original fuel filler flap

Using an original fuel filler flap in a Mercedes W176 is a solution that combines technical and visual aspects. Key advantages include:

• Factory fit with the body – no issues with geometry, gaps, or body lines.
• Compatibility with the standard mechanism – the ability to use existing mounting and opening elements.
• Visual consistency – maintaining the original appearance of the vehicle's side, which is important both aesthetically and for potential resale of the car.
• Fuel system safety – effective protection of the filler area against external factors.

Fuel system expansion and parts selection

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

To better understand the role of the flap in the context of the entire fuel supply path, it is worth familiarizing yourself with issues regarding the tank, pumps, and injectors – a practical discussion can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

If you want to reduce vehicle downtime during repairs and better plan the collection of body components and equipment in one place, the material describing the organization of a wide assortment in one warehouse may be helpful: how a wide assortment in one warehouse effectively reduces your car's downtime at the mechanic.