Used SJ Petro Model SJ-300 Triplex Mud Pump. 5" Metal Plungers x 5" Stroke. Steel Block Fluid End, 4.32:1 Internal Gear Ratio, Detroit 8V71 Diesel Engine. Manual Transmission, Skid Mounted & housed, 7 Valve Manifold with Demco Charge Pump, Comes with Lights, Fuel Tank, Parts Boxes, Ruffneck Heater
Hour meters show 1270 and 5570.