The Wagner TR-6 is a four-wheel drive (4WD) tractor produced from 1955 to 1960 as part of the WA Series. Built in Portland, Oregon, USA, it features a Cummins 6.6L 6-cylinder liquid-cooled diesel engine producing 105 hp (78.3 kW). The tractor has an 8-speed Fuller R-46 transmission with 8 forward and 2 reverse gears. It includes hydraulic power steering, planetary final drives, and hydraulic brakes. The operator station is open with an optional cab. Fuel capacity is 56 gallons (212.0 L) and the hydraulic system holds 30 gallons (113.6 L). Dimensions include a 105 inch (266 cm) wheelbase, 190 inch (482 cm) length, 81 inch (205 cm) width, and 80 inch (203 cm) height (103 inches with cab). The tractor weighs 12,700 lbs (5760 kg) and has 16 inches (40 cm) ground clearance. Standard agricultural tires are 13.00x26 front and rear. The TR-6 is related to the Wagner TR-9 model.