1. Different engines: Dongfanghong 504-3 wheeled tractor is equipped with the famous four-cylinder high-pressure rail engine, and Dongfanghong SK504-2(G4) wheeled tractor is equipped with the famous two-cylinder high-pressure rail engine.
2. Different appearances: the overall dimensions of Dongfanghong 504-3 are 3600× 1560×2400 mm, the wheelbase is 1830 mm, and the overall dimensions of Dongfanghong SK504-2(G4) are 2600× 1560×.