The Lanz Eil Bulldog D2539 was produced from 1937 to 1954 by Lanz in Mannheim, Germany. The Eil Bulldog series was designed primarily for transportation rather than farm work. The D2539 variant features a solid cab. It is powered by a 10.3L single-cylinder liquid-cooled diesel engine producing 53.9 hp (40.2 kW) at 750 RPM. The tractor has a 5-speed gear transmission with 5 forward and 1 reverse gears and a 2WD drive system.