Ford Transit Custom Fuel Pump In Tank Unit Sender Unit 2.2 TDCI BK21-9H307-BC

Ford Transit Custom Fuel Pump In Tank Unit Sender Unit is an original component from the Fuel pumps and level sensors group, designed for the fuel system in 2.2 TDCI diesel engines. Integrating the pump with the float allows for precise fuel delivery and reliable tank level readings, which translates into stable engine operation and proper communication with the vehicle's electronics.

Specifications and technical data

• SKU: BK21-9H307-BC
• Mark: Ford
• Condition: Used
• OEM Part Number: BK21-9H307-BC
• Substitutable numbers: BK21-9H307-BC, BK219H307BC, BK21-9H307-BD, BK219H307BD, 2046975
• Part type: Fuel Pump
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The presented fuel pump integrated with a level sensor has been designed specifically for the diesel fuel system in the Transit Custom model with a 2.2 TDCI engine. The component is responsible for stable fuel pumping from the tank to other sub-assemblies and for transmitting information about the current fuel level to the instrument cluster and vehicle controllers.

Combining the pump and float into a single module reduces the number of connections in the tank, which lowers the risk of leaks and facilitates diagnostics. A properly functioning module ensures:

• even supply to the injection system under various engine loads,
• correct fuel level indications on the dashboard,
• consistent cooperation with onboard systems responsible for range and fuel consumption.

Construction of the fuel pump module with float

The module combines the hydraulic part and the fuel level sensor in one housing. Inside, there are components responsible for suction and fuel pumping, as well as a float working with a resistive sensor or a similar solution that sends a signal to the vehicle's electrical system. This solution allows for a compact and organized installation in the tank, which facilitates assembly and service.

Original manufacturing for the Ford brand means maintaining the correct housing geometry, appropriate mounting points, and matched connection ports, which minimizes the risk of problems during replacement and allows for installation in place of the factory component.

Benefits of using an original fuel pump

Using a fuel pump module with a float dedicated to the Transit Custom 2.2 TDCI allows maintaining fuel system performance parameters at the level intended by the manufacturer. Key advantages include:

• Correct pumping characteristics – matched to the requirements of the 2.2 TDCI engine, which promotes smooth engine operation.
• Proper cooperation with the factory fuel gauge – reduces the risk of incorrect readings and sudden drops in indications.
• Dimensional and mounting fit – the module is intended for a specific application, without the need for installation modifications.

The element from the Fuel pumps and level sensors category is particularly important in commercial vehicles, where stable supply and reliable fuel level indications affect route planning and fleet operation.

Condition, selection, and installation

The offered module is in used condition, which allows for an economical replacement while maintaining the original manufacturer's specification. Before installation, it is recommended to verify compatibility with your specific vehicle based on the OEM part number and interchangeable numbers available in the technical specification, as well as to compare the housing design and connectors with the currently installed component.

During installation, it is worth paying attention to:

• the cleanliness of the fuel tank interior before installing the module,
• the correct positioning of the float to ensure free movement across the full range of fuel levels,
• the tightness of all fuel and electrical connections after completing the work.

Fuel system expansion and additional materials

If you are planning a comprehensive repair or upgrade of the fuel system area in your Ford and need other components from the same group, such as additional pump modules, level sensors, or mounting elements, check the available parts in the Ford fuel pumps and level sensors category.

When selecting used components for fuel and electronic systems, it is worth following proven guidelines. Practical advice on assessing condition, compatibility, and purchase profitability can be found in the article Second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which helps in making informed service decisions when using parts from the secondary market.