The Zetor 4945 is a 45 hp (33.6 kW) farm tractor produced by Zetor from 1977 to 1980 as part of the UR1 9 Series. It features a 2.7L 3-cylinder liquid-cooled diesel engine (model Z4901) with a 10-speed transmission and four-wheel drive. The tractor has a wheelbase of 78 inches (198 cm) and a length of 133 inches (337 cm). It has a rear lift capacity of 2,977 lbs (1350 kg) and a rear PTO with 540/1000 rpm options. The fuel tank capacity is 14.5 gallons (54.9 L). Variants include the 2WD 4911 and the 4WD 4945.