Mini Cooper F55 F56 F57 Plastic Fuel Tank 40L Petrol 7440789 7300477

Mini Cooper F55 F56 F57 Plastic Fuel Tank 40L Petrol is a complete solution from the Fuel tanks and filler pipes group, designed for Mini vehicles with petrol engines. The set combines the function of fuel storage and its delivery to the fuel supply system, which allows for efficient and stable operation of the power unit.

Specifications and technical data

• SKU: 7440789
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7440789
• Substitutable numbers: 16117440789, 7440789, 16117300477, 7300477, 16117349666, 7349666, 16117349693, 7349693
• Fuel type: Petrol
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The presented fuel tank integrated with the fuel pump is a component of the fuel supply system, responsible for the safe storage of fuel and its transport to the engine. The design, adapted to the F55/F56 platform, ensures proper routing of lines, sensors, and mounts, which translates into stable system operation and reduces the risk of leaks.

Thanks to being dedicated to units powered by petrol, the component is optimized for operating parameters typical for this type of engine, including the appropriate operating pressure and flow characteristics.

Benefits of using a complete tank with a pump

Using a complete fuel tank with a pump in the Mini F55/F56 allows you to solve problems related to both fuel storage and delivery in a single service step. This is particularly important for symptoms such as:

• irregular engine operation at low fuel levels,
• power drops associated with insufficient fuel supply,
• noticeable smell of fuel in the rear part of the vehicle body.

Replacing the complete assembly reduces the number of connections and potential points of failure, which promotes long-term, stable operation. The structural consistency of the entire module also facilitates future diagnostics.

Fitment, identification, and compatibility

The item comes from the Mini brand offer, which means compliance with factory assembly standards and body geometry. As a result, original mounting points, line routing, and cooperation with the factory electrical installation and fuel system control are maintained.

For proper part selection, it is worth using the manufacturer's markings, including the OEM number and available interchangeable numbers – this allows you to verify compatibility with a specific equipment version and vehicle year. In case of doubt, comparing the existing element with the one offered in terms of shape, placement of connectors, and ports will be helpful.

Operational characteristics and condition

The product is offered as a used part, which in practice means it comes from vehicle dismantling and may show signs of previous use, while maintaining the functionality required for further use. This type of solution is often chosen for repairs where maintaining the original specification while optimizing service costs is key.

For installation, it is recommended to:

• thoroughly clean the contact surfaces and mounts,
• verify the condition of seals and clamps,
• check the system for leaks after the first engine start.

Technical support and additional materials

For users who want to better understand the operation of the entire fuel supply system, component selection by OEM numbers, and principles of proper operation, the following guide will be useful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. The article discusses, among other things, diagnostics, typical failure symptoms, and good service practices.

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mini and need other elements from the same group, such as supply lines, filler pipes, or additional mounting elements, check the available parts in the Mini Fuel tanks and filler pipes category.