For sale here is a late 1930's ZF AK 4S 15 gearbox, that has been converted with the help of a 1960's Borg-Warner "Rancho # 20" overdrive, into a ZF all synchronized -overdrive gerabox. Extremly rare,maybe unique!This particular gearbox was mounted on a Mercedes-Benz, Models W142, W143 and W153 (230). All 4 gears synchronized..
Broken down. Not working. Could bake a working engine from the 2. Found in grandfathers / uncles garage along with large amount of other de Dion parts..