12V universal low-pressure electric inline fuel pump (commonly referred to as a electronic fuel lift pump or carburetor fuel pump like the HEP-02A style).Function: Moves gas or diesel from the tank to the engine at a low pressure of about 4–7 PSI.Design: Features metallic cylindrical housing with barbed inlet/outlet pipes and external wire leads (red/black for 12V power).Use: Commonly used on carbureted cars, older trucks, tractors, generators, and small engines.