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• Outside Diameter: 540 mm (21.259 in)• Inside Diameter: 421 mm (16.574 in)• Width: 71 mm (2.795 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.