Tandem or dual circuit brake master cylinder used on the UNIMOG 403 / 406 / 416 series with drum brakes.
For use from Chassis number:
U403 - 001946
U406 - 013570
U416 - 004814
If your VIN / Chassis number falls after the above listed numbers and your UNIMOG has drum brakes, you've found your new master cylinder.
Made by FTE, an OEM to Mercedes-Benz.