Description:Part # 320-7251 provides a replacement impeller hub for the 8-1850 370-400 MS Torque Converter.Cat drive train components must endure incredible torque, high impact loads, and frequent direction and gear changes. Cat designs and manufactures its transmissions and final drive components with these demands in mind. The result is a drive train that lasts longer and works harder over the life of the machine.Attributes:• Cast iron impeller hub• Thread Size: 1/2-13 (8X)• Outside Diameter: 202.18 mm (7.960 in)• Inside Diameter: 99.2 mm (3.906 in)• Length: 140.6 mm (5.536 in)Application:Consult your owner's manual or contact your local Cat Deale for more information.