Audi A3 8Y A4 B9 A5 F5 Fuel Tank Filler Cap Screw Petrol 5Q0201550J

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A3 8Y A4 B9 A5 F5 Fuel Tank Filler Cap Screw Petrol is an original component from the Fuel filler caps and accessories group, designed for Audi vehicles with petrol engines. 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: 5Q0201550J
• Mark: Audi
• Condition: Used
• OEM Part Number: 5Q0201550J
• Substitutable numbers: 5Q0201550J, 5Q0 201 550 J
• Fuel type: Petrol
• Category: Fuel Flaps & Components

Purpose and technical function

The presented fuel tank filler cap has been designed for Audi A3 8Y, A4 B9, and A5 F5 models with petrol engines. As a component of the refueling system, it is responsible for the controlled closing of the filler neck, limiting fuel evaporation, and protecting against the ingress of contaminants into the tank. Consequently, it supports the stable operation of the fuel supply system and facilitates the maintenance of correct combustion parameters.

The original design ensures a proper fit to the filler socket, which minimizes the risk of leaks and assembly issues. The cap works with the vehicle's fuel system in accordance with the manufacturer's factory specifications, which is essential for both component durability and the correct diagnosis of potential faults.

Benefits of using an original fuel tank filler cap

Using an original fuel tank filler cap in an Audi A3 8Y, A4 B9, or A5 F5 provides a number of practical benefits:

• secure, tight closure of the fuel filler neck,
• protection against dirt, moisture, and foreign objects entering the tank,
• maintenance of correct pressure and ventilation in the fuel system,
• compliance with the vehicle's factory parameters,
• reduction of the risk of fuel system-related errors.

Thanks to its fit for specific generations of Audi models, the cap does not require modifications or additional adapters. It is a solution that allows for restoring the proper operation of the refueling system after the previous component has been damaged or worn out.

Performance characteristics and installation

The item comes from a used vehicle, meaning it is a pre-owned part that retains functionality consistent with its intended purpose. This type of component is particularly attractive to users looking for a reasonable compromise between cost and quality, while maintaining the manufacturer's original specifications.

In most cases, the installation of the fuel tank filler cap is limited to placing it in the filler socket and locking it correctly. Thanks to the factory fit, the replacement process is quick and does not require specialized modifications, which facilitates efficient service and reduces vehicle downtime.

Integration with the fuel system and part selection

The cap works with a petrol-based fuel system, which is important for the characteristics of the seals and material resistance to fuel and its vapors. Selecting the correct component for a specific Audi model helps avoid compatibility issues and ensures the proper operation of the tank ventilation system.

In case of doubts regarding the selection of a component for a specific engine version or model year, it is worth using the OEM number and interchangeable numbers visible in the product's technical specification. This facilitates verification of compatibility with the vehicle and reduces the risk of purchasing an incorrect part.

To better understand the role of the cap in the context of the entire fuel supply system, it is worth reading the guide describing the diagnostics and operation of elements such as injectors, pumps, and the fuel tank – detailed information can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Expanding Audi refueling zone service

If you are planning a comprehensive repair or upgrade of the refueling zone in your Audi and need other elements from the same group, such as additional caps, filler covers, or accessory security features, check the available parts in the Audi fuel filler caps and accessories category.

Summary

Audi A3 8Y A4 B9 A5 F5 Fuel Tank Filler Cap Screw Petrol is a practical solution for users who want to restore the proper tightness and functionality of the refueling system while maintaining the manufacturer's original specifications. This used, original component from the Fuel filler caps and accessories category is a technically consistent choice in situations where the existing cap has been damaged, worn out, or lost, and the priority is a secure fit and proper cooperation with the vehicle's fuel system.