The Caterpillar Sixty-Five is an agricultural crawler tractor produced from 1932 to 1933 by Caterpillar in Peoria, Illinois, USA. A total of 521 units were built. It features a Caterpillar 21.4L 4-cylinder liquid-cooled gasoline engine rated at 650 RPM, paired with a 3-speed gear transmission (3 forward and 1 reverse). The tractor delivers 67.86 hp at the drawbar and 78.41 hp at the belt. It has a crawler drive with 20-inch wide tracks and an open operator station. The operating weight is 24,965 lbs (11,324 kg).