Gravity Fed type pump with simple two-wire design. Works on 12 Volt negative ground systems only. Includes fittings and mounting hardware along with easy to follow DIY instructions. Pumps require approximately one amp average draw at maximum delivery. 2-3.5 PSI, 28 GPH. Universal design for most domestic 4 & 6 cylinder carburetor applications. Please see part #12S for V8 gasoline applications, part #12D for diesel applications or part #12E for Ethanol, Methanol, E85 and Race Fuel applications.