The ATG20253 alternator is compatible with 320C and 320D excavators.It features a 12PK pulley and S12 pulley class, supporting under conditions.With a 24V output and 50A amperage rating, it provides consistent power to the vehicle's electrical systems.The unit includes an EFF fan type for effective heat dissipation, contributing to stable performance in temperature environments.It meets thermal resistance standards with a 105℃ insulation class.This alternator replaces part numbers 10R-7561, 212-8561, A4TU3599, and 34368-03800, offering direct fitment and straightforward installation.