Description:Cat brake pistons are a critical component in the brake system for Cat machine drive trains, allowing the machines to slow, stop, or hold a stationary position.Attributes:• Material: Cast Iron• (128) tooth external spline provides exact OEM fit• Outside Diameter: 409.36 mm (16.116 in)• Inside Diameter: 254.66 mm (10.025 in)• Width: 56.13 mm (2.209 in)Application:Brake pistons are used in Cat drive train braking systems. Consult your owner’s manual or contact your local Cat Dealer for more information.