In 1955, Kaiser introduced the CJ-5, based on the 1951 Korean War M-38A1, with its rounded front-fender design. It was slightly larger than the CJ-3B, as it featured an increased wheelbase and overall length. Improvements in engines, axles, transmissions and seating comfort made the CJ-5 an ideal vehicle for the public's growing interest in off-road vehicles.
The CJ-5 featured softer styling lines, including rounded body contours. A long-wheelbase model was introduced and was known as CJ-6. Apart from a longer wheelbase, the CJ-6 was almost identical to the CJ-5. Jeep also introduced a forward-control cab-over-engine variation to the CJ line in 1956.
The Jeep CJ-5 had the longest production run of any Jeep vehicle, from 1954 to 1984. In the 16 years of Kaiser ownership, manufacturing plants were established in 30 countries, and Jeep vehicles were marketed in more than 150 countries.