Ford Transit Custom Mk8 Fuel Filler Flap Cover Frozen White - Z2 BK21-V405A02-AB

Ford Transit Custom Mk8 Fuel Filler Flap Cover Frozen White is an original body component from the Fuel filler flaps and accessories group, designed for a precise fit in the factory mounting location. The finish in Frozen White - Z2 allows for aesthetic integration with the vehicle body without the need for additional painting, provided the vehicle color matches the specification.

Specifications and technical data

• SKU: BK21V405A02AB-FW-1
• Mark: Ford
• Condition: Used
• OEM Part Number: BK21V405A02AB
• Substitutable numbers: 1837417, BK21-V405A02-CD, BK21V405A02AB, BK21-V405A02-AB
• Color: Frozen White - Z2
• Category: Fuel Flaps & Components

Purpose and function of the fuel filler flap

The fuel filler flap in the Ford Transit Custom is responsible for protecting the fuel filler neck from dirt, moisture, and mechanical damage. A correctly selected component ensures:

• stable closing of the fuel filler area,
• protection against dust, mud, and road salt,
• maintenance of a consistent body line and correct panel gaps.

The original design of the flap is optimized for the geometry of the wheel arch and sliding door, which reduces the risk of rubbing and improper opening during daily use.

Frozen White - Z2 color and visual fit

The Frozen White - Z2 finish allows for maintaining a uniform paint surface along the side of the vehicle. Thanks to the factory shade:

• it is easier to maintain a consistent body appearance after repair,
• the need for additional painting is reduced when the color code matches,
• compatibility with Ford's factory protective coatings is maintained.

This solution is particularly beneficial for accident repairs or replacing a component after mechanical damage, when a quick return of the vehicle to service is essential.

Installation and operational characteristics

The fuel filler flap is a body component that operates daily – with every refueling. Therefore, the following are important:

• correct geometry of the hinge and mounting points,
• compatibility with the factory opening and closing mechanism,
• appropriate rigidity, reducing vibrations and rattling while driving.

The original Ford origin helps maintain factory assembly clearances and minimizes the risk of problems with fitting to the bodywork and the fuel cap.

Component condition and service application

The presented fuel filler flap is offered as a used part, which makes it a cost-effective solution for maintenance repairs and budget-friendly body renovations. This type of component is suitable for, among others:

• replacement after parking damage or local corrosion,
• restoring full functionality of the fuel filler area,
• replacing a missing element after bodywork disassembly.

By maintaining the original geometry, it is possible to keep the opening mechanism working correctly and ensure aesthetic alignment with adjacent body panels.

Integration with the fuel system and service knowledge

Although the fuel filler flap is a body component, its condition has a direct impact on protecting the refueling area and indirectly on the durability of fuel system components. To better understand the relationship between securing the filler and the condition of the entire power system, it is worth checking out our guide: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Repair expansion – Ford Fuel filler flaps and accessories group

If you are planning a comprehensive repair or upgrade of the fuel filler area in your Ford and need other elements from the same group, such as additional covers, mounting elements, or accessory protections, check the available parts in the Ford Fuel filler flaps and accessories category.