Description:Drive coupling for the drive pump and reduces torsional resonance. Cat torsional couplings are specifically engineered to protect the drive train during high loading events.Attributes:• Steel torsional coupling assembly• Internal Spline Number of Teeth: 13• Outside Diameter: 352.35 mm (13.872 in)• Width: 68.5 mm (2.696 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.