BMW F39 F45 B48 Petrol Engine Fuel Pump Sender Supply Module 7300463

BMW F39 F45 B48 Petrol Engine Fuel Pump Sender Supply Module is an original fuel supply system component designed for BMW models with the B48 engine. Integrating the pump with the sender module allows for precise fuel delivery and stable tank level readings, which translates into reliable engine performance and accurate information on the instrument cluster. This is an OEM solution that facilitates maintenance and reduces the risk of fuel supply issues.

Specifications and technical data

• SKU: 7300463
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7300463
• Substitutable numbers: 7300463, 16117300463, 7349684, 16117349684
• Fuel type: Petrol
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The in-tank fuel pump with a sender unit is responsible for continuously maintaining the correct fuel pressure in the system and transmitting information about the fuel level to the ECU and the instrument cluster. In B48 engines, stable fuel supply is crucial for the proper operation of direct injection; therefore, using a complete pump module with a level sensor minimizes the risk of fuel supply interruptions, engine hesitation, or starting problems on both warm and cold engines.

The component belongs to the Fuel pumps and level sensors group, meaning it combines mechanical functions (fuel pumping) with measurement functions (fuel level signal), working in conjunction with the vehicle's electronics and the OBD diagnostic system.

Module construction and benefits of using OEM BMW

The in-tank fuel pump module integrated with a sender unit was designed by BMW to ensure proper fuel flow in the tank and stable fuel level readings across the entire operating range. The OEM design ensures:

• precise fitment to the tank shape in BMW F39 and F45 models,
• proper routing of fuel lines and electrical wiring,
• correct integration with the factory engine control unit and dashboard.

As a result, installation is predictable, without the need for system modifications, and the fuel supply system maintains the parameters specified by the manufacturer. Original BMW solutions reduce the risk of fuel level errors, incorrect range indications, or fuel system failure warnings.

Operating parameters and petrol compatibility

The pump is designed for use in petrol-powered systems, which is significant for both the materials used in its construction and its performance characteristics. Using the correct type of fuel ensures:

• appropriate durability of components submerged in the tank,
• stable operating pressure across the entire engine load range,
• proper cooperation with the injection system and fuel filtration.

Selecting a pump module compatible with the B48 engine and the F39/F45 platform allows for maintaining factory performance parameters, which is important for power output, fuel consumption, and exhaust emissions.

Condition, origin, and service application

The offered component comes from the original BMW parts group and is intended for service applications in vehicles requiring the replacement of the fuel pump, level sensor, or the complete tank module. Replacing the entire assembly instead of individual components allows you to:

• reduce diagnostic and installation time in the workshop,
• limit the risk of having to re-open the fuel tank,
• restore correct fuel level readings and stable engine power supply in a single procedure.

This solution is particularly beneficial when experiencing symptoms such as starting difficulties, engine stalling at low fuel levels, fluctuating fuel gauge needles, or fuel system errors stored in the ECU.

Technical support, diagnostics, and OEM selection

To correctly select the fuel pump module for a specific BMW vehicle, it is recommended to use the OEM number and vehicle data. A detailed discussion of fuel system operating principles, typical wear symptoms, and diagnostic methods can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which explains, among other things, how to select parts using catalog numbers and VIN.

If you are planning a comprehensive repair or upgrade of the fuel supply system in your BMW and need other components from the same group, such as pump modules, level sensors, or complete tank assemblies, check the available parts in the BMW fuel pumps and level sensors category.