The Deutz-Fahr 4055E Keyline is a utility tractor produced since 2018 as part of the 4E Keyline Series. It features a 3.0L 3-cylinder turbocharged intercooled diesel engine producing 54.2 hp (40.4 kW) with a rated speed of 2200 RPM. The tractor offers multiple transmission options including 8-speed gear, 12-speed creeper, and 8-speed partially synchronized gearboxes. It supports two- or four-wheel drive with mechanical differential lock and power steering. The open operator station includes an optional two-post ROPS. Hydraulics are open center type with 2 to 4 valves and a pump flow of 8.2 gpm (31.0 lpm). The rear hitch is category II with a lift capacity of 3527 lbs (1599 kg). PTO options include independent rear PTO with 540 rpm standard and optional 540/540E or 540/1000 rpm speeds. Dimensions vary slightly between 2WD and 4WD models, with wheelbases around 75.6 to 76.8 inches and weights from 4630 to 5512 lbs. Electrical system is 12 volts with negative ground.