Quick Overview Fuel pump made of solid rubber and aluminum, used in petrol and diesel engines. The spigots are hooked and made of aluminum as opposed to cheaper plastic (plastic) Facilitates bleeding the fuel system, pumping fuel from a canister, tank in a car, motor boat, etc. It has a non-return valve preventing fuel from flowing backwards, the direction of fuel flow is marked on the pump in the form of an arrow. The fuel is not sucked in automatically, you have to press the pump all the time.