The XC-123 used two Pratt & Whitney R-2800-23 air-cooled radial piston engines, while the XC-123A was fitted with four General Electric J47-GE-11 turbojets, in two pods.
Fairchild C-123 Provider je bilo dvomotorno propelersko vojaško transportno letalo, ki so ga zasnovali pri Chase Aircraft in pozneje proizvajali pri Fairchild Aircraft.