Trucks and heavy equipment Mercedes Truck In the name of Allah, the Most Gracious, the Most Merciful. BOZ 111 Super gearbox. The gearbox, we can only say it's good, and I'm not one to praise my own goods. You'll only get what you install in your vehicle and be satisfied. You have a one-month warranty against all defects. If it doesn't work for you, return it and get your money back, my brother. Eight speeds. ZF 111 for desert lovers.