The Müller TM28 is a four-wheel drive (4WD) farm tractor produced from 1980 to 1995 by Müller in Brazil. It is powered by a Cummins 6-cylinder liquid-cooled diesel engine producing 280 hp (208.8 kW). The tractor features an Eaton 18-speed transmission with 4 reverse gears, including a nine-speed gearbox with a two-speed transfer case. It has planetary final drives, articulated power steering, hydraulic disc brakes, and a cab equipped with air-conditioning. The electrical system includes an alternator charging system.