Factory HOWO A7 Zz4257n3247n1b Tractor Truck for Trailer ...
Product Description. Factory HOWO A7 ZZ4257N3247N1B Tractor Truck for Trailer 60 Tons. 1. Specifications. (1) HOWO A7 Tractor Truck Chassis Model ZZ4257N3247N1B. (2) 6x4 drive type, D10.38 Engine Euro II emission, 380HP Horse Power, 400L Fuel tank. (3) HW19712 gear box, 12 speeds forward and 2 reverse. (4) HC16 double reduction driving axle.