The M54 was the standard cargo version of the series.
It had a 7 ft (2.1 m) × 14 ft (4.3 m) low-sided box with a bottom-hinged tailgate.
Side racks, troop seats, and overhead bows with a canvas cover were standard.
A front-mounted winch was optional.

The standard body sides could secure a load but could not be loaded from the side by forklifts, so a body with drop sides was standardized as the M54A1C.
The M55, with an extra-long wheelbase, had a 20-foot-long (6.1 m) box.
By contrast, there was no drop-side version of the M814 successor.
The M54 was the standard cargo version of the series. It had a 7 ft (2.1 m) × 14 ft (4.3 m) low-sided box with a bottom-hinged tailgate. Side racks, troop seats, and overhead bows with a canvas cover were standard. A front-mounted winch was optional.
The standard body sides could secure a load but could not be loaded from the side by forklifts, so a body with drop sides was standardized as the M54A1C.
The M55, with an extra-long wheelbase, had a 20-foot-long (6.1 m) box. By contrast, there was no drop-side version of the M814 successor.
M54 5-ton 6x6 truck