BMW E83 E70 E60 E66 E87 E90 Fuel tank filler cap cover diesel 16117193381

BMW E83 E70 E60 E66 E87 E90 Fuel tank filler cap cover diesel is an original component from the Fuel filler flaps and caps group, designed for diesel engine 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.

Specifications and technical data

• SKU: 7193381-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 16117193381
• Substitutable numbers: 16117193381, 16115B99378, 1599378, 7193381
• Fuel type: Diesel
• Category: Fuel Tank Caps

Purpose and technical function

The fuel filler cap in BMW diesel vehicles is responsible for a controlled, airtight closure of the filler neck, which limits fuel evaporation and the risk of contaminants entering the tank. In vehicles with a high-pressure system, this is important for the stable operation of the pump, injectors, and the entire fuel supply system.

The component from this group is designed to work with the factory filler neck, maintaining the correct sealing geometry and the proper opening and closing characteristics. As a result, the cap operates predictably, and the user is assured of a consistent seal after every refueling.

Compatibility with diesel engines

The presented cap is intended for BMW vehicles powered by diesel fuel, which means it is adapted to the specific requirements of diesel fuel. This includes, among other things, material resistance to long-term contact with diesel fuel and adaptation to the odor and evaporation characteristics typical of this fuel.

Choosing a cap compatible with the diesel fuel system reduces the risk of leaks that could affect the operation of the tank ventilation system, and consequently, the uniform fuel supply to the engine. A properly selected component also helps maintain stable fuel storage conditions in the tank while the vehicle is stationary.

Operational characteristics and installation

As an element from the Fuel filler flaps and caps category, the cap is intended for daily handling during refueling. The design provides a comfortable grip and a repeatable tightening torque, which facilitates use even when wearing work gloves or in difficult weather conditions.

Installing the cap involves placing it into the factory fuel filler neck, without the need to interfere with other components. By maintaining the manufacturer's standard, it is possible to preserve the original functionality of the fuel system, including compatibility with the filler flap and body components in the filler area.

Benefits of using an original BMW cap

Using a cap dedicated to specific BMW models allows for maintaining the structural integrity of the fuel system. A properly selected component supports:

• maintaining the tightness of the filler neck and limiting the ingress of contaminants,
• stable operation of the fuel tank ventilation system,
• proper storage conditions for diesel fuel in the tank.

For users who pay attention to technical correctness of repairs, choosing a cap from this group is a way to maintain compliance with the vehicle manufacturer's specifications and avoid problems resulting from mismatched replacements.

Technical support and additional materials

To better understand the impact of the fuel filler cap on the operation of the entire fuel system, it is worth reading the material describing the construction and operation of the fuel system, including injectors, pumps, and the fuel tank – a detailed discussion can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

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