Porsche 718 Boxster 982 Fuel Tank Filler End Cap Screw Cover 99120154100

Porsche 718 Boxster 982 Fuel Tank Filler End Cap Screw Cover is an original component from the Fuel filler flaps and caps group, designed specifically for demanding Porsche vehicle owners. This used, factory-original cap ensures proper sealing of the refueling system while maintaining compatibility with the body design and the manufacturer's safety standards.

Specifications and technical data

• SKU: 99120154100
• Mark: Porsche
• Condition: Used
• OEM Part Number: 99120154100
• Substitutable numbers: 99120154100, 991 201 541 00, 99120124101, 991 201 241 01
• Part type: Fuel Tank Cap
• Category: Fuel Tank Caps

Purpose and technical function

Porsche 718 Boxster 982 Fuel Tank Filler End Cap Screw Cover is responsible for tightly closing the filler neck, which limits fuel vapor evaporation and helps maintain the correct operating parameters of the fuel system. The original OEM design is matched to the body geometry of the 718 Boxster 982 model, allowing the cap to work seamlessly with the filler flap and factory seals. This component is significant from both an operational and diagnostic perspective – a leaking cap can cause errors in the emission control system and problems with maintaining vacuum in the tank. Choosing an original cap from the same design group reduces the risk of such malfunctions.

Compatibility with OEM numbers and replacements

The product belongs to the Porsche OEM parts line, meaning it was designed in accordance with factory quality and dimension standards. The cap has an assigned part number and associated interchangeable numbers, which facilitates precise identification of the component according to service documentation or manufacturer catalogs. This allows for the safe selection of the cap for a specific 718 Boxster 982 version, minimizing the risk of installation issues. This approach is particularly important for items in the Fuel filler flaps and caps category, where even minor differences in diameter, length, or mounting method can result in leaks or improper interaction with the body flap.

Condition, origin, and advantages of using a used part

The offered cap comes from a dismantled Porsche vehicle and is classified as a used part. This type of component, provided the locking mechanism and seal are functional, represents a rational economic choice while maintaining factory specifications. A used OEM element usually fits the existing filler geometry better than random universal replacements. Using an original fuel filler cap allows you to:

• maintain compliance with the factory fuel system design,
• ensure proper interaction with the filler flap and housing,
• reduce the risk of error messages related to system leaks.

Practical installation and operational tips

Installing the fuel filler cap in a Porsche 718 Boxster 982 is generally a simple service operation that does not require specialized tools – however, it is crucial to properly seat the seals and check the operation of the latch mechanism. After replacement, it is worth paying attention to:

• the smoothness of the opening and closing mechanism,
• the absence of play after tightening the cap,
• the absence of fuel odor near the filler after a short test drive. For users who want to better understand the impact of the cap on the entire fuel supply system, the following article describing the operation and maintenance of the fuel system will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Expanding your Porsche fuel filler upgrade

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