This main drive gear set is designed as a direct replacement for restoring equipment functionality.It is compatible with models 195, 215, 235, 7719, 7721, 7723, 226i, 246i, 266i, 306i, 226, 246, 266, and 306.This gear unit matches the specifications of the component to ensure proper fit and within the designated machinery.Installation allows the device to return to its standard working condition.