Fuel Filler Cap Audi A4 B8 VW Passat B6 Diesel Tank Lid Black Cover 3C0201553F

Visual condition of the part

The product shows signs of use visible in the photos.

Fuel Filler Cap Audi A4 B8 VW Passat B6 Diesel Tank Lid Black Cover is an original component from the Fuel filler flaps and caps group, designed for diesel fuel systems. Its robust construction and precise fit to the filler neck ensure a tight seal, stable operation of the fuel system, and safe vehicle operation.

Specifications and technical data

• SKU: 3C0201553F
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 3C0201553F
• Substitutable numbers: 3C0201553F, 3C0 201 553 F
• Fuel type: Diesel
• Color: Black
• Category: Fuel Tank Caps

Purpose and technical function

The presented cap is a functional component of the fuel system in diesel-powered vehicles, responsible for a controlled, airtight closure of the fuel filler. Proper fitment with the filler neck reduces the risk of contaminants entering the tank, stabilizes fuel system operating conditions, and supports the maintenance of correct fuel vapor pressure.

This solution, dedicated to Diesel units, minimizes the risk of misfueling and facilitates maintenance, especially in vehicles used intensively – such as fleet vehicles or those driven over long distances.

Construction, material, and ergonomics

The cap is finished in black, allowing for a consistent match with most factory fuel filler recesses in Audi and Volkswagen models. The design intended for this group of vehicles ensures a secure grip, convenient tightening and loosening, and a clear tactile feel when fully closed.

The well-thought-out shape facilitates operation even when wearing work gloves or in adverse weather conditions. The applied design solutions promote a stable position of the cap in the filler neck, which is important during frequent refueling and operation in both urban and highway conditions.

Benefits of using an original fuel filler cap

Choosing an original cap from the Fuel filler flaps and caps group for an Audi A4 B8 or VW Passat B6 translates into a number of practical benefits:

• preservation of factory geometry and fitment to the filler neck,
• reduction of the risk of leaks and the ingress of moisture or dirt into the filler area,
• consistent visual appearance of the fuel filler recess thanks to the appropriately selected color,
• comfortable operation during daily refueling.

A component from this group is particularly important in diesel-powered vehicles, where fuel purity and system tightness have a direct impact on the durability of injectors, pumps, and other fuel system components.

Condition, origin, and service application

The offered cap comes from the Volkswagen line and is an OE-type part, which means it complies with factory design and assembly standards. As a used component, it represents a reasonable choice for maintenance when the existing cap is mechanically damaged, worn out, or has lost its functional properties.

Replacing the cap is one of the simplest service procedures, yet it has a real impact on refueling safety and the long-term, stable operation of the fuel system in Audi A4 B8 and VW Passat B6 diesel cars.

Technical support and additional materials

To better understand the impact of fuel filler tightness on the durability of the entire fuel system, it is worth checking out the guide on diagnostics and operation, available in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. You will find practical tips regarding the operation of fuel systems in diesel engines there.

If you want to maximize the potential of dismantled parts and ensure their long-term operation, the guide How to extend the service life of used car parts? will also be helpful, as it describes proven methods for the maintenance and use of used components.

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