A fuel pump is a component of a fuel system that is responsible for delivering fuel from the fuel tank to the engine. It is typically located in the fuel tank or in the engine compartment and is powered by the engine or by an electric motor.

The fuel pump consists of a pump housing, a rotor or impeller, and a shaft that connects the rotor to the motor or engine. As the motor or engine turns, the shaft rotates the rotor, which creates a suction effect that draws fuel from the fuel tank and pushes it through the fuel lines to the engine.

Fuel pumps are an essential component of any fuel system, as they ensure that the engine has a consistent supply of fuel. They are typically designed to operate at high pressures and must be able to withstand the high forces and heat that are generated during operation.

There are several types of fuel pumps available, including mechanical pumps, which are driven by the engine or a separate motor, and electric pumps, which are powered by an electric motor. Each type has its own benefits and drawbacks, and it is important to choose the right type of fuel pump for your vehicle or equipment based on its specific needs and operating conditions.