AT194969 Excavator Ignition Keys for JD Hitachi Excavator, Replace H800 AT147803 4286465 Replacement part of the excavator key is AT194969, H800, AT147803, 4286465. This key works on below: JD compact excavators, excavators, loggers & forestry equipment, loaders, wheeled excavators. Hitachi excavators, graders, dozers, rollers, skid-steers, dumpers. Case dozers 1605 & 1850K. New Holland dozers 1605 & 1850K. And some Fiat equipment.