Mercedes-Benz C CLK Class W204 C209 Fuel Filler Cap Tank Cap Diesel A2114700805

Mercedes-Benz C CLK Class W204 C209 Fuel Filler Cap Tank Cap Diesel is an original component from the Fuel filler flaps and caps category, designed for diesel fuel systems. It ensures a tight seal of the filler neck, stabilizes the operating conditions of the fuel system, and helps maintain the appropriate level of operational safety for your Mercedes vehicle.

Specifications and technical data

• SKU: A2114700805
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2114700805
• Substitutable numbers: A2114700805, A 211 470 08 05
• Location on the vehicle: Front, Left
• Fuel type: Diesel
• Category: Fuel Tank Caps

Purpose and technical function

The fuel filler cap in Mercedes vehicles is responsible for the controlled, airtight sealing of the fuel tank neck in diesel-powered vehicles. For diesel versions, it is particularly important to limit fuel evaporation and protect the system against the ingress of contaminants, moisture, and foreign objects that could disrupt the operation of the injectors and the high-pressure pump.

The presented cap is a component intended for installation in the front left side of the vehicle area, in accordance with the factory body design and fuel line routing in selected Mercedes-Benz W204 and C209 models. By maintaining the original geometry and manufacturer standards, the cap works with the factory filler flap and the tank neck thread, which facilitates installation and daily use.

Compatibility with the Diesel fuel system

In vehicles with diesel engines, stable pressure and fuel cleanliness have a direct impact on the durability of the injectors, the pump, and the entire fuel supply system. The Diesel fuel filler cap for the Mercedes-Benz W204 and C209 has been designed to:

• maintain proper sealing of the fuel tank neck,
• limit the ingress of external contaminants,
• support the proper operation of the tank ventilation system,
• ensure repeatable, secure tightening during every refueling.

As a result, the fuel system maintains stable operating conditions, which translates into uniform engine power characteristics and predictable vehicle behavior in various road conditions.

Installation and usage characteristics

The offered cap is an original Mercedes brand component, which means full compatibility with the factory filler socket in compatible models. The design intended for placement at the front left side of the vehicleallows for compliance with factory routing of lines and body panels.

The product comes from the Fuel filler flaps and caps segment, ensuring consistency with other components of the refueling system. The used condition means that the cap has been previously used but is still suitable for further use after proper verification and installation in the vehicle. This solution allows for an economical repair while maintaining the original manufacturer's specifications.

Benefits of using an original fuel filler cap

Using an original fuel filler cap in a Mercedes-Benz W204 or C209 provides a number of practical benefits:

• Factory fit – the cap works with the original tank neck and filler flap, without the need for modifications.
• Consistency with the Diesel fuel system – design adapted to the specifics of the fuel and the requirements of diesel engines.
• Reduced risk of leaks – proper sealing of the filler reduces the risk of contaminants entering the tank.
• Economical repair – a used OEM component allows for restoring full functionality at reasonable service costs.

If you want to better understand the impact of components such as the cap, tank, or lines on engine performance, it is worth checking out the technical guide Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses diagnostics, part selection by numbers, and operating principles for fuel supply systems.

Why choose original used Mercedes components

Choosing an original fuel filler cap from a dismantler is a compromise between costs and maintaining the vehicle's factory parameters. A component designed by the vehicle manufacturer complies with the structural requirements of the body, the fuel system, and safety standards, which is especially important in cars with diesel engines.

More information about the advantages of using original components from the secondary market can be found in the article OEM quality assurance and safety – why used original car parts are the best choice for your car?, where issues of quality, safety, and cost-effectiveness of such solutions are described in detail.

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 flaps, seals, or additional filler security features, check out the available parts in the Mercedes fuel filler flaps and caps category.