Mercedes E S Class W168 W210 W220 W221 Diesel Ring Filler Red Neck A2204710071

Mercedes E S Class W168 W210 W220 W221 Diesel Ring Filler Red Neck is a specialized component from the Fuel Filler Caps and Accessories group, designed for diesel engine fuel systems. The red filler ring serves as a functional addition to the tank neck, improving refueling ergonomics and providing clear identification of the Diesel fuel type.

Specifications and technical data

• SKU: A2204710071
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2204710071
• Substitutable numbers: A2204710071, A 220 471 00 71, ŁS
• Fuel type: Diesel
• Color: Red
• Category: Fuel Flaps & Components

Application in Mercedes E and S Class Models

The presented fuel filler ring has been designed for selected Mercedes E and S Class models, as well as other vehicles of this brand that use a diesel fuel system. The component works with the fuel filler neck, stabilizing the position of the dispenser nozzle and reducing the risk of accidental contact with the filler edges.

This solution is particularly useful in vehicles subjected to intensive use – both in urban traffic and on long journeys – where the repeatability and consistent geometry of the fuel filler contribute to user comfort and reduced wear of the cap area components.

Technical and Functional Characteristics

The element belongs to the Fuel Filler Caps and Accessories group, meaning it directly interacts with the tank neck and cap. The design is adapted for Diesel fuel, thereby minimizing the risk of refueling errors and facilitating quick identification of the correct fuel.

The red color serves both a visual and practical purpose – it enhances the visibility of the filler area, which is beneficial in poorly lit conditions, such as underground parking lots or at night. Simultaneously, it provides a clear signal to the user and station personnel that the vehicle has a diesel fuel system.

Condition, Origin, and Benefits of Choice

The offered fuel filler ring is an original Mercedes component, sourced from disassembly, in used condition. In practice, this means factory-level fit to the tank neck's construction, correct mounting geometry, and compatibility with solutions used in the specific vehicle generation.

Replacing a worn or damaged ring with an original used part allows for the restoration of the fuel filler area's proper functionality without the need for intervention in the tank itself. This is a beneficial solution both technically and economically – especially for vehicles used professionally or with high mileage.

Why Care for the Fuel Filler Area?

A functional fuel filler ring is important not only for aesthetics but also for usability. It stabilizes the nozzle during refueling, reduces accidental damage to the neck edges, and helps maintain tidiness around the cap. In diesel-powered vehicles, a properly marked and clear fuel filler area reduces the risk of refueling with the wrong fuel, which could lead to costly fuel system repairs.

To better understand how proper refueling and component selection affect fuel system durability, check out our guide: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair.

Expanding the Fuel Filler Area Modernization in Mercedes

If you are planning a comprehensive repair or modernization of the fuel filler area in your Mercedes and need other parts from the same group, such as caps, seals, or additional tank neck accessories, check the available parts in the category Mercedes Fuel Filler Caps and Accessories.