Gravity fed type pump with simple two-wire design. Works on 12 volt negative ground systems only. Includes fittings and mounting hardware along with a 100-micron in-line filter and easy to follow DIY instructions. Pumps require approximately one amp average draw at maximum delivery. At 4-7 psi (pounds per square inch), it pumps 35 gph (gallons per hour) of methanol, E85, or race gas. Universal design for most 4, 6 & 8 cylinder carburetor applications. Please see part #12S for gasoline applications, part #12D for diesel applications or part #42S for import applications.