Operating Pressure: 15-90 PSI - Final Fuel Pressure Adjusted by Regulator, Flow Rate: 140-160 litres per hour, at 3.0 bar / 13.5 V, Voltage: 12 V min. Total length (tip to tip): 4 1/2 inches (11.5 cm), length of pump body metal housing: 2 5/8 inches (6.6 cm), pump body diameter: 1 1/2 inches (3.8 cm), inlet diameter: 5/16 inches (0.8 cm), outlet diameter: 5/16 inches (0.8 cm)