A mechanical or electrical pump that pressurizes the fuel system to move gas from tank to engine, delivering it to the carburetor or injectors.

A protective device in a circuit which prevents circuit overload by breaking the circuit when a specific amperage is present. The device is constructed around a strip or wire of a lower amperage rating than the circuit it is designed to protect. When an amperage higher than that stamped on the fuse is present in the circuit, the strip or wire melts, opening the circuit.