Complete Front Gear Case Differential For YMH 660 YFM660FH 450 5KM-46160-07-00 5KM-46160-00-00 Gear Case This front gear case differential is designed for compatibility with specified YMH 660 and YFM660FH models.It includes the gear case assembly with internal differential components necessary for front drivetrain.The unit is engineered to fit OEM specifications and replaces part numbers 5KM-46160-07-00 and 5KM-46160-00-00.Installation requires standard mechanical tools and knowledge of ATV drivetrain systems.This assembly is intended for use in off-road vehicles utilizing the corresponding model configurations.: This part is made by an independent vendor.Any brand/model mention is for compatibility purposes only.