Model Compatibility: Fits XV125, XV125S, XV250, XV250S, and Virago XV250 motorcycles as listed in the title. Part Number Match: Replaces part numbers 3DM-81960-00 and 3DM-81960-01 for voltage rectifier regulator function. Functional Purpose: Restores voltage regulation and AC-to-DC conversion functionality as designed for the specified motorcycle models. Installation Scope: Designed as a direct-fit replacement for the motorcycle’s existing voltage rectifier regulator unit. Role: Serves as a functional replacement for the voltage rectifier regulator component used in the listed models.