... HOWO A7 6x4 Tractor Truck , Drive form:6x4,wheel form D10.,D12 engine SMARTSHIFT transmission 16 speeds Tubeless tire HOWO A7 6x4 Tractor TruckDrive form:6x4D10.,D12 engineProduct Name A7 ... door lock,electric window lifter,power mirror Engine SINOTRUK s new D-12 series engine, turbo- ... D-10 series engine Clutch SINOTRUK 430 diaphragm spring clutch Gear box SINOTRUK s HW20716A gearbox, SmartShift ...