G1246090017 D12 generator is an alternator matched for Sinotruk D12 series heavy truck engines and a core component of the vehicle power supply system. Adopting high-quality stator coils and rectifier assemblies with precise internal structure and optimized heat dissipation design. Driven by the running engine, it charges the vehicle battery and supplies continuous power to all on-board electrical devices, ensuring stable operation of lamps, ECU, cab electrical appliances and other components. Every unit undergoes load, voltage resistance, temperature rise and aging tests before delivery. It features good vibration resistance and high temperature tolerance, suitable for heavy-duty long-distance transportation and mountain road conditions. Supplied as a complete assembly for direct replacement. We maintain sufficient inventory and stable bulk supply for repair workshops, fleet operators, auto dealers and global cross-border export customers.