New Alternator Compatible With Ford New Holland 3.91L 3.61L 63320124, 63321458, 99478834, R013240, AIA0007, 40029012. Pulley Belt Width (mm). Shaft Overall Length (mm). Piston Outside Diameter (in). Piston Outside Diameter (mm). Caliper Pistion OD (mm). Motor Overall Length (in). Bearing Inside Diameter (mm). Bearing Outside Diameter (mm). Rotor Inside Diameter (mm). Rotor Outside Diameter (mm). Rotor Overall Length (mm). Rotor Shaft Outside Diameter (mm). Rotor Shaft Overall Length (mm). Number of Mounting Holes. ETB Inside Diameter (in). Customer Service Available 7 Days A Week. 3.91L 3908cc 238cid w/Cab Std. 3.61L 3613cc 220cid w/Cab Std. T” Indicates Manual Transmission / “A. T Indicates Automatic Transmission Please Reach Out To Customer Service To Confirm Fitment, If Necessary. WE STRIVE TO PROVIDE A 5 STAR EXPERIENCE! With the exemption of U. OEG Parts is not responsible for carrier delays such as weather or natural disasters. We always recommend cross referencing a part number to ensure fitment as well.