DAYTON Repair Kit: Mfr Part # 21TH03, 2ZWZ6/2ZWZ7. (4) 3/8 in -16 X 1 in Hex Head Cap Screw, (4) 3/8 in -16 X 3/4 in Hex Head Cap Screw, (4) Lock Washer, 5/8 in Slinger Washer, Impeller, Impeller Shim Kit, Low Crown Acorn Nut, Mechanical Seal, O-Ring. For Use with Mfr Model Number.