Fuel lines and feed lines carry fuel from the tank to the engine under pressure, running as rigid metal line, flexible rubber hose, or a combination of both depending on where they route through the vehicle. A cracked, corroded, or leaking line can cause a noticeable fuel odor, a visible leak, hard starting from lost prime, or in worst cases, a fire hazard if fuel contacts a hot engine surface. Browse replacement fuel lines and feed lines for cars, trucks, and SUVs to keep fuel delivery sealed and running safely to the engine.