The CJ-6 was a stretched version of the CJ-5 with a 20 inch longer-wheelbase (101 in, 1955-1971 / 103.5 in, 1972–1981). The extended chassis allowed a variety of configurations, including adding a second row of seats.
Introduced in 1953 as the M170 military version, the civilian CJ-6 made its debut in 1955 as a 1956 model. Never very popular in the United States, most CJ-6 models were sold to Sweden and South America.
The M170 military version shared many of the features of the M38A1 (Military CJ-5), but had the passenger-door opening extended back to the rear wheel well. Most were used as front-line field ambulances, able to carry four litters. A few were also used as radio units.