Ford Transit Custom Mk8 Expansion Tank Overflow Pipe Hose Line BK21-8K012-BK

Ford Transit Custom Mk8 Tank Overflow Hose BK21-8K012-BK is an original part from the Hoses, Tubes, and Pipes group, designed for the fuel system in Ford vehicles. It ensures proper drainage of excess fuel or vapors from the tank, contributing to stable system operation and reducing the risk of leaks. A used OEM component is a sensible choice for vehicle servicing when you prioritize factory fit and predictable installation.

Specifications and technical data

• SKU: 2548261-1
• Mark: Ford
• Condition: Used
• OEM Part Number: 2548261
• Substitutable numbers: 2548261, BK218K012BK, BK21-8K012-BK, BK218K012BJ, BK21-8K012-BJ
• Part type: Hose
• Category: Hoses, Lines & Pipes

Technical Characteristics of the Overflow Hose

The tank overflow hose in the Ford Transit Custom Mk8 is responsible for the controlled flow of medium within the fuel tank system. The component's design is adapted to the body's geometry and the arrangement of sub-assemblies in this model, allowing for secure routing of the hose and minimizing stress during vehicle operation.

Original manufacturing ensures:

• factory-compliant hose routing relative to the tank and body,
• adaptation to operating conditions in the underbody compartment,
• appropriate rigidity and flexibility at bends.

Original Origin and Installation Compatibility

The hose was designed by the vehicle manufacturer specifically for this model, resulting in a precise fit with tank brackets, mounts, and spigots. This ensures predictable installation without the need for modifications or adjustments required for universal replacements.

The component has a dedicated OEM part number and associated replacement numbers, which facilitates verification of compatibility with specific Ford Transit Custom Mk8 versions. In practice, this means you can safely replace a worn or damaged hose with a component of the same structural specification.

Component Condition and Service Application

The offered tank overflow hose is in used condition, making it a cost-effective solution for routine repairs where maintaining the original system configuration while optimizing costs is a priority. This type of part is suitable for both replacing a damaged hose and for comprehensive fuel tank system servicing.

Choosing an original part from disassembly allows for the preservation of factory flow parameters and proper fuel line routing, which is important for the safety and longevity of the entire system.

Benefits of Using an OEM Overflow Hose

Using a tank overflow hose dedicated to the Ford Transit Custom Mk8 offers a number of practical benefits:

• Factory Fit – compatibility with the original system geometry, without the need for modifications.
• Consistency with Other Fuel System Components – the hose works with existing spigots, brackets, and covers.
• Stable Tank System Operation – proper flow and drainage of excess medium reduces the risk of leaks.
• Sensible Service Cost – a used OEM part offers a compromise between quality and repair budget.

Related Parts from the Same Group

If you are planning a comprehensive repair or upgrade of the fuel system area in your Ford and need other parts from the same group, such as additional hoses, flexible pipes, or rigid tubes for medium routing, check the available parts in the Ford Hoses, Tubes, and Pipes category.

To better plan the scope of service work on used components and to consciously select parts for your car, it is worth reading the guide: Stock vs. Sport Suspension – Construction Differences and Is It Worth Buying Used Suspension Parts?