Profile: Midwest Converters, Inc. specializes in offering torque converters. We carry Stock, Cummins, Ford Powerstroke, Racing, Street, and Pro racing torque converters. Our RV series torque converters increase fuel mileage, improve power & torque at low RPM, reduces RPM at highway speeds, lowers temperatures, and increases transmission life. Our Street Performance converters can be used for street application for any engine up to 450 hp. These are fully furnace brazed with heavy duty Torrington bearings. OR-4200 Dodge Cummings Diesel 518/618 transmission off road torque converter features multi-lock-up clutch construction, a one piece steel billet front cover design, a modified stator for increased torque output along with high oversized roller bearings, furnace brazed reinforcement and 4340 hardened components.