BMW 3 5 X3 Series E60 E90 E83 Mini R50 R55 Fuel Tank Filler Cap Cover 7222391

BMW 3 5 X3 Series E60 E90 E83 Mini R50 R55 Fuel Tank Filler Cap Cover is an original component from the Fuel tanks and filler pipes group, designed for the factory fuel system of selected BMW and Mini models. It ensures a tight seal of the filler neck, stabilizes tank operating conditions, and helps maintain the correct parameters of the fuel supply system.

Specifications and technical data

• SKU: 7222391
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7222391
• Substitutable numbers: 16117222391, 7222391, 16116765046, 6765046, 16116756772, 6756772, 16117224480, 7224480, 16116754491, 6754491, 16116759042, 6759042, 16116754634, 6754634, 16116765045, 6765045, 16116759252, 6759252, 16111184668, 1184668, 16110149425, 0149425
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The presented fuel cap is an OEM component designed specifically for the BMW E60, E90, E83 series and Mini R50 and R55. Its task is to maintain controlled pressure in the tank, limit fuel evaporation, and protect the inside of the tank from external contaminants. Thanks to its factory-fit design for the filler neck thread and socket, the cap works in conjunction with the venting and OBD diagnostic system, minimizing the risk of errors related to fuel system leaks.

Construction and fitment for BMW and Mini

The construction of the cap has been developed to meet the specific requirements of the BMW and Mini platforms, which translates into precise fitting with the filler neck and proper interaction with the seal. The materials used are resistant to long-term contact with gasoline and diesel fuel, as well as temperature changes typical for the wheel arch area and the fuel filler vicinity. The ergonomic shape of the handle facilitates operation during refueling, and the properly selected clamping force ensures a secure closure without excessive stress on the thread.

Benefits of using an original fuel cap

Using an original cap in BMW and Mini vehicles helps maintain stable operating conditions for the entire fuel supply system. A tight seal prevents moisture and dust from entering the tank, which promotes a longer service life for components such as the fuel pump or injectors. A properly selected cap also helps avoid check engine light issues caused by leaks in the fuel vapor system, which is important for both diagnostics and compliance with emission standards.

Condition of the component and installation aspects

The offered fuel cap is a used item, which in practice means it comes from disassembly and retains the factory geometry and operating method intended by the manufacturer. This type of part is particularly attractive to users who want to maintain the original vehicle specification, avoiding the accidental selection of replacements with uncertain parameters. Installation is usually limited to basic service procedures – the cap is ready for direct application into the filler socket, without the need for fuel system modifications.

Selection by numbers and compatibility with the fuel system

The component has a dedicated OEM part number and a set of interchangeable numbers, which facilitates precise identification and matching to a specific body and engine version. When selecting a cap, it is worth comparing the markings with the vehicle documentation or the existing component to maintain full compatibility with the fuel system and diagnostic system. This helps avoid problems with leaks, improper tank venting, or errors stored in the engine control unit.

If you are planning a comprehensive repair or upgrade of the fuel system area in your BMW and need other elements from the same group, such as caps, filler components, or tank parts, check the available parts in the BMW Fuel tanks and filler pipes category.

Technical support and knowledge about the fuel system

To better understand the role of the cap in the entire fuel supply system, it is worth familiarizing yourself with the operating principles of injectors, pumps, and the fuel tank, as well as methods for diagnosing and regenerating these components. Practical information, diagrams, and answers to frequently asked questions can be found in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration", which will help you consciously plan service work on your BMW or Mini.