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:• Cast iron brake piston• Outside Diameter: 398.56 mm (15.691 in)• Inside Diameter: 246.3 mm (9.696 in)• Width: 40.55 mm (1.596 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.