Actuator part # 627-4605 for use on fixed and oscillating axles equipped with a torque-proportioning limited slip differential (LSD).Attributes:• Hardened steel• Outside Diameter: 200.33 mm (7.88 in)• Inside Diameter: 98.8 mm (3.88 in)• Width: 67.5 mm (2.65 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.