Ford Transit Custom Fuel Filler Flap Housing Cover Cap GK21-V27936-AA

Ford Transit Custom Fuel Filler Flap Housing Cover Cap is an original body component from the Fuel filler caps and accessories group, designed for professional maintenance of the refueling area in your Ford. It ensures proper covering of the filler neck, an aesthetic finish to the side of the vehicle, and stable mounting in accordance with the manufacturer's standards.

Specifications and technical data

• SKU: GK21-V27936-AA-1
• Mark: Ford
• Condition: Used
• OEM Part Number: GK21-V27936-AA
• Substitutable numbers: 2005623, GK21-V27936-AA, GK21V27936AA, GK21-V27936-A-INS-03, GK21-V27936AINS03
• Part type: Fuel Door
• Category: Fuel Flaps & Components

Purpose and function of the component

The fuel filler flap housing in the Ford Transit Custom is responsible for protecting the filler neck from external contaminants and maintaining a consistent body line. A correctly selected component from this group reduces the risk of moisture and dirt entering the area around the filler, which promotes trouble-free operation of the fuel system.

Using an original housing allows for maintaining factory fitment with the fender and flap, which is important both from the point of view of durability and the visual consistency of a commercial vehicle.

Technical characteristics and fitment

The presented fuel filler flap housing is a component from the Ford group, which facilitates matching to the specific Transit Custom body version. The design is prepared for installation at factory mounting points, without the need for body modifications.

To ensure compatibility, it is worth verifying the compliance by OEM part number or interchangeable numbers – their full list can be found in the technical specification section. Such an approach minimizes the risk of selecting the wrong variant and speeds up the service process.

Condition of the component and service application

The fuel filler flap housing is offered as a used part, which is a reasonable choice for post-accident repairs, bodywork corrections, or replacing damaged wear-and-tear components. This type of component will work particularly well in fleet vehicles, where functionality, correct fitment, and service cost control are important.

Replacing the housing is a typical workshop operation performed during repairs of the side body section, replacement of the fuel filler flap, or after paintwork interventions in the filler area.

Benefits of using an original housing

• Factory fitment – maintaining the correct geometry and gaps between the flap, fender, and housing.
• Consistent appearance of the refueling area – component prepared for standard Ford Transit Custom solutions.
• Easier installation – design intended for use with original mounting points.
• Support for the tightness of the fuel filler area – limiting the influence of external factors on the filler neck.

Integration with the fuel system and service knowledge

When working in the fuel filler area, it is worth considering the general condition of the fuel system – from the tank and lines to the components responsible for refueling. To deepen your knowledge on the diagnostics and maintenance of this area, you can use our guide material: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. The article helps to better plan service work and select parts by OEM numbers.

Related components from the same group

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