The Oliver 1855 is a 2WD/4WD row-crop tractor from the 55 series. This tractor was manufactured by the White from 1969 to 1975. The Oliver 1855 is equipped with 5.1 L, diesel or gasoline engine and gear type transmission (6 forward and 2 reverse gears) with disc clutch or partial power shift (18 forward and 6 reverse).

The Oliver 1855 row-crop tractor used 5.1 L, 5,080 cm², (310 cu·in) six-cylinders turbocharged diesel or gasoline engine with 98.0 mm (3.86 in) of cylinder bore and 111.0 mm (4.37 in) of piston stroke. The Oliver-Waukesha diesel engine produced 99.4 PS (73.1 kW; 98 HP) at 2,400 rpm of maximum output power, gasoline engine produced 93.3 PS (68.6 kW; 92 HP) at 2,400 rpm.

The Oliver 1855 tractor is equipped with hydrostatic power steering, differential hydraulic disc brakes, open operator station (two-post ROPS or cab was available as an option) and 132 liters (34.9 US gal.; 29 Imp. gal) fuel tank.