Mercedes-Benz C E Class W204 W207 W212 Fuel Filler Tank Cap Diesel Red

Mercedes-Benz C E Class W204 W207 W212 Fuel Filler Tank Cap Diesel Red is an original component from the Fuel filler caps and accessories group, designed for diesel engine fuel systems. This used, verified component ensures the fuel system remains sealed, allows for proper tank venting, and provides secure closure for the fuel filler in Mercedes mid-size and executive vehicles. Thanks to its factory origin, the cap maintains the correct geometry, which facilitates installation and daily operation.

Specifications and technical data

• SKU: A2214700905
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2214700905
• Substitutable numbers: A2214700905, A 221 470 09 05, BG
• Location on the vehicle: Front, Left
• Fuel type: Diesel
• Color: Red
• Category: Fuel Flaps & Components

Purpose and technical function

The presented cap is a component of the fuel supply system in Mercedes vehicles from the W204, W207, and W212 families, adapted for use in Diesel systems. It is responsible for tightly sealing the filler, limiting fuel evaporation, and protecting against the ingress of contaminants into the filler neck. A properly selected cap minimizes the risk of errors related to tank pressure and problems with fuel system venting.

The vehicle placement, defined as the front left body area, means that the cap works with the factory position of the fuel flap in a given body model. This ensures proper fitment with the housing, guides, and flap hinges, which translates into the correct operation of the opening and closing mechanism.

Construction, color, and fitment

The fuel filler cap has been designed for full compatibility with the factory filler neck in Mercedes vehicles, which facilitates installation without the need for modifications. The red color used makes it easier to visually identify the component during service work, and at the same time, it can serve as a clear marking of the fuel filler in the service bay or wheel arch area, depending on the body design.

The original Mercedes brand origin means that appropriate dimensional tolerances are maintained, along with the correct selection of sealing material and compatibility with factory threads and sockets. As a result, the cap works with sensors, vent lines, and other fuel system components according to the manufacturer's specifications.

Condition, service application, and benefits of installation

The item is offered as used, which allows for an economical replacement of a damaged or worn cap while maintaining parameters close to factory standards. This type of part is suitable both for standard maintenance repairs and for restoring the completeness of the fuel system after a collision or bodywork intervention.

Replacing the fuel filler cap is particularly recommended when symptoms such as difficulty unscrewing, leaks, the smell of fuel near the filler, or error messages related to the fuel system appear. Using an original component from the Fuel filler caps and accessories group allows you to restore the proper operation of the system without the need for compromise solutions.

Safety and fuel system operation

A properly selected cap is important not only for user comfort but also for the safety of vehicle operation. A tight seal limits the risk of water, dirt, and dust entering the filler neck area, which can affect the service life of fuel system components. In the case of diesel engines, where fuel quality is crucial for the operation of injectors and the pump, keeping the filler area clean is particularly important.

For users who want to better understand the relationship between the condition of the cap, the tank, and other supply components, the guide on fuel system diagnostics and maintenance will be helpful – more information can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Additional information for users choosing used components

Choosing a used fuel filler cap is a reasonable cost-saving solution, provided there is an informed assessment of the technical condition and fitment for a specific model. It is worth paying attention to the completeness of the element, the condition of the working surfaces, and the absence of mechanical damage in the sealing area. For those planning a broader vehicle upgrade or who frequently use the secondary market, practical tips on purchasing used components may be useful – you can find them in the guide Buying used car parts – the most common mistakes when choosing tuning parts.

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mercedes and need other elements from the same group, such as additional caps, accessory security features, or filler cover elements, check the available parts in the category Mercedes fuel filler caps and accessories.