The new Willys engine first appeared in some of the automaker's 1939 models and was carried over into its 1940 and 1941 sedans and pickup trucks. The Go-Devil was the obvious choice for the MB ...

“Its advanced powertrain perfectly showcases 80-plus years of technical evolution since those original ‘Go Devil’ engines powered the Willys MB.” The 2025 Jeep Wrangler 4xe Willys ’41 ...