Description:Part # 580-6697 provides a spider for the differential that transmits power by use of a torque-proportioning limited slip feature.Part of the final drive system, the differential and bevel gear group transmits power from the drive shaft to the axle shafts through bevel gear reduction and differential. Final drives transfer power from the engine to the ground. Attributes:• Trunnion Diameter: 54.7 mm (2.153 in) (4X)• Length: 286.4 mm (11.275 in)• Width: 286.4 mm (11.275 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.