Blower Motor Condenser (12volt, Rev. rotation). PART NO: A-539047R2. Sealed Volts12 Shaft Dia.5/16" Shaft Lgth.1 1/2" Body Lgth.4 1/8" Total Body Lgth.5" Body Dia.3" Stud Ctr. Dist.2 5/16" RotationRev. . MODELS: Case-IH TRACTOR: HYDRO 100 Case-IH TRACTOR: 1066 Case-IH TRACTOR: 1466 Case-IH TRACTOR: 766 Case-IH TRACTOR: 966.