The Muir-Hill 171 is a four-wheel drive (4WD) tractor produced by Muir-Hill in Manchester, England from 1975 to 1984. It features a Perkins 8.8L 8-cylinder diesel engine delivering 177 hp (132.0 kW) with a 10-speed Eaton-Fuller gear transmission. The tractor includes power steering, hydraulic wet disc brakes, and a cab with heater and optional air-conditioning. It has a fuel capacity of 84 gallons and an open center hydraulic system with 4 valves. The rear PTO is independent with a 1000 RPM type. Dimensions include a wheelbase of 86.6 inches and a weight of 14,000 lbs. The tractor rides on 18.4/15x34 agricultural tires front and rear.