The M152 enclosed utility truck was a variant of the Dodge M37 3⁄4-ton 4x4 (G741). Introduced in 1951 it was used extensively by the United States armed forces during the Korean war. During the 1970s, they were replaced by the commercial truck based 1 1⁄4-ton M715 and M880 series.The powerplant was identical to the World War II era WC vehicles line, as was most of the drivetrain. The straight-six cylinder engine was derived from a 1930s era passenger vehicle engine that was widely produced. This was in line with a long-standing military procurement strategy that attempted to use commercially produced vehicle variants in military service.
Many deficiencies with aging design became apparent in the 1960s, including a tendency of the connecting rods to fail at high rpms due to the long cylinder stroke of the engine. As the average speed of the vehicles in the military increased, these engine failures became commonplace due to the low gear ratio of the vehicle, which was originally designed as a multipurpose vehicle capable of transporting heavy loads of ammunition.