The Landini 6550 is a utility tractor produced from 1978 to 1987 as part of the 550 Series. It features a Perkins 3.9L 4-cylinder liquid-cooled diesel engine producing 65 hp (48.5 kW) with a 12-speed transmission. The tractor offers two- or four-wheel drive options, mechanical rear differential lock, power steering, wet disc brakes, and a standard cab with heat. It has a fuel tank capacity of 31.7 gallons (120 L) and hydraulic pump flow of 7.4 gpm (28 lpm). The rear hitch is category II with a lift capacity of 5248 lbs (2380 kg) and an independent rear PTO with 540/1000 rpm options. Dimensions include a 95.3 inch (242 cm) wheelbase for 4WD, length of 156 inches (396 cm), and weights ranging from 6725 lbs (3050 kg) for 2WD to 7337 lbs (3328 kg) for 4WD. Tire options include 7.50-16 and 11.2-24 front tires and 12.4-36 rear tires. Electrical system includes a 12 volt battery and 45 amp alternator.