One Replacement Dump Hydraulic Cylinder Seal Kit Fits KOMATSUU Models:Wa400-1 Wheel Loader (Dump - S/N 20001-Up)Wa420 Wheel Loader (Tilt (Dump)Wa420-3 Wheel Loader (Dump - S/N 30001-Up)Wa450 Wheel Loader (Tilt (Dump)Wa450-1 Wheel Loader (Dump - S/N 20001-Up)Wa450-2 Wheel Loader (Dump - S/N A25001-Up)Wa450-3 Wheel Loader (Dump - S/N 30001-Up)Wa470 Wheel Loader (Tilt (Dump)Wa470-1 Wheel Loader (Dump - S/N 20001-Up)Wa470-3 Wheel Loader (Dump - S/N 50001-52999, 53001-Up) Technical Informatiion: Rod: 100mm, Bore: 200mm Replaces Part Number(s): 707-99-73020