Description:Part # 580-7815 provides a rear wheel spindle for the final drive on the 777/777G Off-Highway TruckAxles must endure incredible torque, high impact loads, and frequent direction and gear changes. Cat drivetrain axles are designed and manufactured to meet these types of demands. The result is a drive train that lasts longer and works harder over the life of the machine. Cat axle assemblies transmit power from the power train to the wheels, and provide excellent driving performance capabilities in demanding conditions.Attributes:• Spindle for heavy duty use• Reaction Spline Number of Teeth: 90• Brake Spline Number of Teeth: 74Application:Consult your owner's manual or contact your local Cat Dealer for more information.