The Deutz-Fahr 4050E Keyline is a utility tractor produced from 2018 onward as part of the 4E Keyline Series. It features a 3.0L 3-cylinder liquid-cooled diesel engine delivering 49.4 hp (36.8 kW) with Stage IIIA emissions compliance. 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 a two-post ROPS option. Hydraulics are open center type with 2 to 4 valves and 8.2 gpm pump flow. The rear hitch is category II with a lift capacity of 3527 lbs (1599 kg). PTO options include independent 540 rpm with optional 540/540E and 540/1000 rpm. Dimensions vary slightly between 2WD and 4WD models, with weights from 4630 to 5512 lbs. Electrical system is 12 volts with negative ground.