cylindrical fuel pump kit for normal road use (with silver top), delivering fuel at rate of up to 18 gallons per hour at a pressure of 4.0 to 4.5 psi (pounds per square inch) which can only be fitted to negative earth systems. can be fitted anywhere into the fuel line, and will prime a dry fuel system to a height of 600mm. size 135mm x 50mm. thread 1/8" NPTF. kit comprises pump, 2 unions and 2 mounting rubbers.