The Kubota KL31Z is a compact utility tractor produced from 2013 to 2015 as part of the KL Kingwel Zero Series. It features a Kubota D1803 1.8L 3-cylinder liquid-cooled diesel engine producing 30.6 hp (22.8 kW) at 2600 RPM. The tractor is equipped with a Dual Drive continuously-variable transmission offering infinite forward and reverse speeds across 3 ranges, a dry disc clutch, and hydro-mechanical CVT. It has four-wheel drive, power steering, mechanical wet disc brakes, and a cab with standard air-conditioning. The rear tractor hitch is type I, and the rear PTO operates at 540 RPM. Dimensions include a 71-inch wheelbase, 127.8-inch length, 60.6-inch width, and 88-inch height with a weight of 3626 lbs. Standard agricultural tires are 8-16 front and 13.6-24 rear. Electrical system is 12 volts with negative ground. The KL31Z has a related model, the KL34Z.