Dongfeng Jincheng 6X4 Vacuum Suction Tank Truck Chassis & Driving Performance First of all, this heavy‑duty vacuum suction truck adopts Dongfeng Jincheng 6X4 double rear‑axle chassis. It draws power from a durable Yuchai 270 HP (199 kW) diesel engine that meets National VI emission standards. Thanks to the 4350+1350 mm wheelbase, the truck delivers stable carrying capacity for heavy‑load sanitation work. Besides, …