Weld on fuel pump drive hub to drive Waterman or similar pump off the auxiliary / power steering pump gear. Fits 1994 to 2002 Cummins 5.9L engines. 3/8″ hex. Used on recessed face gears only. Two of the pictures show the gear that this drive was designed for. Gear not included. Gears have a different shaft diameter so the gears can’t be swapped on the pumps. The recessed face gears in the picture are much harder on the face than most flat face gears that come on Dodge trucks so that is why these are usually welded instead of drilled and tapped like the flat face gears. If your gear has a flat face with no recess see our other drive. Normally we cut the shaft of the pump off leaving a small amount sticking out to use as a pilot to locate this drive hub. If you have any additional questions, please call Keating Machine for more details. There are two different drives available.