Genuine SINOTRUK VG1560080023 PS8500 fuel pump for HOWO T7H, C7H & A7 trucks. OEM replacement for MC11/MC13 engines. When your HOWO truck starts hesitating under load, smoking heavily, or refuses to start after sitting overnight, don’t assume it’s the injectors — more often than not, the real issue lies deeper: the fuel injection pump, specifically the PS8500 model (VG1560080023) used across SINOTRUK’s MC11 …