MITM 3-0414 PRESSURE WASHER PUMP 2.5GPM 3000 PSI 3/4 HORIZ SHAFT W/ UNLOADER. This Mi-T-M Triplex Pressure Washer Pump (3-0414) is a fully plumbed pump that operates at 3.1 GPM and 3,000 PSI. It has a built-in unloader and a regulator, a water inlet fitting with filter, an easy start valve, a thermo valve and oil. This pump fits most horizontal shaft engines with a 3/4 diameter shaft that is approximately 2 inches long and operate below 7 horsepower. It has a 4-bolt pattern with holes approximately 2-1/2 apart. This Pump replaces Mi-T-M Pumps 3-0286 and 3-0297.