QSB4.5 Cummins Water Pump Kit 5473172 Parts Catalog Ref No. Part Name Part No. Required 1 Rectangular Ring Seal 3906698 1 2 Water Pump 5312296 1 3 Hexagon Flange Head Cap Screw 3093730 2 Kit, Water Pump 5473172 A/R Hexagon Flange Head Cap Screw 3093730 2 Rectangular Ring Seal 3906698 1 Water Pump 5524785 1 Above is the introduction …