Backhoe compatibility
Kubota BT603
Verified tractor compatibility and published backhoe information from the cited source.
Backhoe specifications
Capacity72.5 in digging depth (2 ft flat bottom); 8 ft 7 in reach from swing pivot; 140° swing arc
Working height67.7 in transport height; 100 in operating height fully raised
Backhoe dimensions & configurationKubota Swift-Connect backhoe for BX23S; optional mechanical thumb; loader and backhoe are standard equipment on BX23S
Compatible tractors
Configuration notes matter. Compatibility for one driveline, transmission or equipment configuration should not be assumed for every version of the same tractor model.
Kubota BX23S
Kubota BX Series brochure identifies BT603 as the matching backhoe for BX23S and states that the loader and backhoe come standard on BX23S.
Source
Compatibility sourceKubota USA BX Series brochure - official loader and backhoe specifications