Description:Part # 146-7275 provides a spider for the differential that transmits power and provides positive traction of one wheel through use of a no-spin differential.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:• Number of Teeth: 18• Trunnion Diameter: 41.81 mm (1.646 in) (4X)• Center Hole Diameter: 136.65 mm (5.380 in)• Outside Diameter: 353.1 mm (13.902 in)• Width: 52.32 mm (2.059 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.