Porsche Boxster 986 Fuel Filler Tank Cap Cover Screw 99620124102

Porsche Boxster 986 Fuel Filler Tank Cap Cover Screw is an original refueling system component designed for gasoline-powered Porsche vehicles. It ensures a tight seal of the filler neck, stabilizes pressure in the tank, and protects the fuel system from external contaminants, which is crucial for both safety and component durability.

Specifications and technical data

• SKU: 99620124102-1
• Mark: Porsche
• Condition: Used
• OEM Part Number: 99620124102-1
• Fuel type: Petrol
• Part type: Fuel Tank Cap
• Category: Fuel Tank Caps

Purpose and function in the fuel system

The presented cap belongs to the Fuel filler flaps and caps category and is a functional component that works directly with the tank filler neck. In gasoline vehicles, it is responsible for:

• maintaining the tightness of the fuel system during operation and while parked,
• protecting against the ingress of moisture, dust, and other contaminants into the tank,
• stabilizing the operating conditions of fuel system components, such as the pump or fuel lines.

Thanks to its precise fit for the Boxster 986 design, the cap works seamlessly with the factory filler socket, reducing the risk of leaks and refueling issues.

Compatibility and fitment for Porsche

As a part designed for the Porsche brand, the cap is engineered with consideration for the filler geometry, fuel system characteristics, and requirements for gasoline operation. Proper fitment translates into:

• correct seating in the filler neck without play or tension,
• compatibility with the factory locking mechanism,
• maintenance of the manufacturer-specified sealing parameters.

Selecting a component consistent with the Boxster 986 design reduces the risk of installation errors and operational problems that may occur when using aftermarket replacements of uncertain origin.

Performance characteristics and installation benefits

The original used fuel filler cap is a solution that allows for restoring the proper operation of the refueling system while maintaining reasonable service costs. Key benefits include:

• preservation of the factory design of the fuel system without interfering with the filler geometry,
• reduction of the risk of fuel evaporation and unwanted odors around the vehicle,
• simple installation in place of a worn or damaged component, without the need for system modifications.

A properly selected cap is especially important in vehicles used daily, where frequent refueling requires repeatable, reliable operation of the locking mechanism.

Importance for fuel system durability

In gasoline vehicles, a leaking or damaged cap can lead to accelerated wear of fuel system components and engine performance issues. Using the correct component helps to:

• limit the ingress of contaminants into the tank,
• maintain stable operating conditions for the fuel pump and lines,
• minimize the risk of diagnostic errors related to the fuel system.

For Porsche owners who want to consciously manage the technical condition of their car, replacing a worn cap with a functional unit is a simple yet significant step toward maintaining the proper operation of the entire system.

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

To better understand the impact of components like the fuel filler cap on the operation of the entire fuel supply system, it is worth reading the guide on diagnostics and maintenance – it is discussed in detail in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration", where you will find practical tips on selecting parts by OEM numbers and the principles of proper fuel system maintenance.